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| Field development. Reservoir engineering. Production |
Хафизов Ф.Ш., Шевченко Д.И., Кофанов А.В., Николаев И.А. Оптимизация процесса тренинга специалистов нефтегазового комплекса в условиях ресурсных ограничений // Электронный научный журнал "Нефтегазовое дело". 2011. №5. С. 461-475. URL: http://www.ogbus.ru/authors/KhafizovFSh/KhafizovFSh_5.pdf ![]()
В статье рассматриваются проблемы, связанные с оптимизацией и ресурсными ограничениями при разработке методического обеспечения тренажеров для специалистов нефтегазового сектора. В настоящее время практически отсутствуют научно-обоснованные и конструктивные методики оценки эффективности использования тренажеров, в процессе их разработки практически не учитывается ограниченность ресурсов. Это, прежде всего, ограничения по кадровым ресурсам, времени обучения и по финансовым возможностям предприятия. Предлагается конструктивная методология оптимизации. Приводится пример реализации данного подхода в виде интегрированной обучающей системы.
Ключевые слова: эффективность, ресурсы, обучающие системы, тренажеры, требование к средствам обучения
08.12.11
V.V. Dmitruk, A.A. Singurov, A.V. Kononov A.V. New solution for an intensification «senoman» wells and experimental-industrial tests. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 196-205. http://www.ogbus.ru/authors/Dmitruk/Dmitruk_1.pdf ![]()
The application of methods for increasing the permeability of the bottomhole formation zone (ВFZ) provide additional flow of gas and gas condensate wells, and therefore cause additional yield. The main method of intensification of the wells in the field of LLC "Gazprom dobycha Noyabrsk" remains the chemical (acidic processings, processing of SAA). By results of the done work is offered the new solution on the basis citric acid for the intensification «senoman» wells. There are results of laboratory and experimental-industrial tests of processing of wells, composition on the basis of lemon acid. The results showed the perspective of application of the composition for intensification in unconsolidated reservoirs.
Keywords: permeability, bottomhole formation zone, intensification, acid processing, citric acid, well workover, experimental-industrial tests
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07.12.11
L.R. Sagirova, Yu.A. Kotenev. Salt deposits on oilfields of Noyabrsk region: classification, composition and structure. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 189-195. http://www.ogbus.ru/authors/Sagirova/Sagirova_1.pdf ![]()
The increased water production from oilfields in Noyabrsk Region, Western Siberia, has resulted in a growing number of wells subject to scale formation and deposition. The produced water is the main source of salts precipitating as solids. Efficient scale inhibition largely depends on the composition and structure of the deposits. The article details the results of the composition analysis of sediments sampled from electrical centrifugal submersible pumps on Noyabrsk group of oilfields, Western Siberia. The classification of sediments is presented. The results obtained may be used for the development of scale inhibition program in the Noyabrsk region.
Keywords: salt deposits, sediment groups, calcite, corrosion products, salt complex, mechanical impurities
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07.12.11
A.Yu. Kotenev. Oil deposits in heterogeneous reservoirs – complex approach for stimulation systems and technologies feasibility. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 175-188. http://www.ogbus.ru/authors/KotenevAYu/KotenevAYu_3.pdf ![]()
A comprehensive study of geological, physical and technological data and field development parameters have been undertaken for a number of oil fields in Permian-Bashkirian arch. Data analysis enabled to carry out mathematical modelling of the process of oil displacement in heterogeneous reservoirs as well as experimental studies for adapting technologies and recommendations development for enhanced oil recovery and water influx restriction in productive formations.
Keywords: hard-to-recover reserves, oil saturation, near-wellbore zone, water influx, sublayer, production stimulation
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04.12.11
R.R. Sabitov, V.A. Korotenko M.G. Application of pattern recognition theory in oil and gas practice. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 154-161. http://www.ogbus.ru/authors/Sabitov/Sabitov_1.pdf ![]()
The theory of pattern recognition in oil and gas practice has foundwide application, both in drilling and in the oil and gas fields development. Works of many authors confirm the validity of the results. This article addresses the issue of forecasting performance re-fracturing application of pattern recognition at the YuV1 formation of Nivagalskoe and Urevskoe oilfields.
Keywords: theory of pattern recognition, second hydraulic fracturing, YuV1 formation, Nivagalskoe, Urevskoe, oilfield
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04.12.11
M.N. Nikitin, A.V. Petukhov. Gel-forming composition on sodium silicate base for water shutoff in complex structure fractured reservoir conditions. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 143-153. http://www.ogbus.ru/authors/NikitinMN/NikitinMN_1.pdf ![]()
The results of laboratory investigations of a new gel-forming composition on sodium silicate and chromium acetate base are presented. The possibility and ways of gelation time regulation are shown. Filtration tests has revealed that the composition has selective properties and is capable of fractured water inflow channels sealing.
Keywords: gel-forming composition, sodium silicate, chromium acetate, water shutoff, gelation time, plastic strength, filtration test
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04.12.11
I.V. Lymar. Review of new water shut-off technologies implemented on the oil fields of the Republic of Belarus. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 133-142. http://www.ogbus.ru/eng/authors/Lymar/Lymar_1e.pdf ![]()
http://www.ogbus.ru/authors/Lymar/Lymar_1.pdf ![]()
A brief review of new water shut-off technologies developed by BelNIPIneft and tested on the oil field wells in the Republic of Belarus. The results of pilot testing of water shut-off compositions based on chemical agents “GPAN”, “OVP-1” and “AKOR-BN102” are being discussed as well as new method of selective water shut-off and integrally designed technology. It is demonstrated that application of developed technologies allows significant in-crease of technical-economical performance of water shut-off works.
Keywords: water shut-off works, water shut-off compositions, plugging material, selective shut-off, integrally designed technology, technical-economical performance
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04.12.11
M.G. Kubrak. Calculation of the optimal amount of workover teams within an oil and gas field. Electronic scientific journal "Oil and Gas Business", 2011, Issue 5, pp. 112-121. http://www.ogbus.ru/authors/Kubrak/Kubrak_3.pdf ![]()
The method of calculation of the optimal amount of workover teams within an oil and gas production shop or a field as a whole in final stages of the development is described in the article. The formula of the dependence between a success of geological-technical actions and an amount of carried out repairs is derived and offered for use. The calculation of economic efficiency connected with the reduction of charges for the workovers’ fulfillment is represented. The causes are defined and the explanation of the decrease of the geological-technical actions ratio as a result of the increase carried out workover jobs is shown.
Keywords: calculation of the amount of workover teams within an oil and gas production field, success of geological-technical actions
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06.09.11
R.N. Bakhtizin, K.R. Urazakov, R.R. Rizvanov. New sucker rod design. Electronic scientific journal "Oil and Gas Business", 2011, Issue 4, pp. 66-73. http://www.ogbus.ru/authors/Bakhtizin/Bakhtizin_2.pdf ![]()
One of the general factors, restraining full usage of the deep oil wells (3500:4000 m) is the sucker rod quality. Proposed a fundamentally new design of sucker rod for deep, marginal wells. Using finite element modeling, optimization of the new sucker rod design enabled to reduce stress in a new sucker rod.
Keywords: deep oil wells, sucker rod, finite element modeling
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05.09.11
Elenets А.А., Dergunov I.A. Oil reservoir depletion estimation criteria to select the area for sector geological hydrodinamic modelling within the side tracking design by example of Vatiegan oil field. Electronic scientific journal "Oil and Gas Business", 2011, Issue 4, pp. 50-65. http://www.ogbus.ru/authors/Elenets/Elenets_1.pdf ![]()
Actual technological effectiveness of the side tracking depends not only on the model effectiveness but also on the location, selected at the preliminary stage of sector modeling. At the initial stage of the side tracking from well-candidate projecting low modeling technological effectiveness probability can be reduced by preliminary analysis of oil reserves elaboration at the area of target wells. In the thesis the explanation of effectiveness for complex use of geologic and hydrodynamic modeling methods and statistic geological and production data workover are presented. Complex use of analysis methods allows a more well-grounded selection of locations for sector geologic and hydrodynamic modeling and as a result an expanded approach to planning of such activity as side tracking.
The topic urgency is grounded by lack of the unified approach to the planning of productive oil formation development with side tracking.
Keywords: side tracking, planning, approach, oil reserves recovery, potentially produced oil reserves, initial recoverable reserves
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27.08.11
A.R. Mavliev, M.K. Rogatchev, D.V. Mardashov, K.V. Strizhnev. Investigation of the corrosion-preventing properties of the process liquids for the borehole oil production. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 462-471. http://www.ogbus.ru/authors/Mavliev/Mavliev_1.pdf ![]()
The results of laboratory investigations of the corrosion-preventing properties of the water solution of the polyfunctional surfactants and hydrophobic emulsion compositions according to the corrosion mechanism of the downhole equipment are presented. It is found out the emulsion composition has prophylactic corrosion preventing properties as lubricant and demonstrates better protection to metal properties by comparison with traditional water solution of the surfactants.
Keywords: corrosion, downhole equipment, surfactants, oil wetting agent, emulsion composition
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23.08.11
Shihab Mazin Najeeb. Substantiation of thermal effects on carbonate formations with high-viscosity oil of Northern Iraq Qaiyarah oilfield. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 450-461. http://www.ogbus.ru/authors/Najeeb/Najeeb_1.pdf ![]()
The prospects for enhanced oil recovery on carbonate reservoirs with high-viscosity oil of Qaiyarah oilfield by thermal treatment technologies are considered. The existing technologies of thermal treatment are reviewed. Covered the advantages of combined stimulation with reference to the geological production conditions of development of carbonate beds Euphrates and Jeribe. Presents the results of predicting the process of oil recovery from carbonate reservoirs by pulse-dose of heat and cyclical in-situ polymer-thermal effects.
Keywords: technology, engineering, oil viscosity, thermal methods, carbonate reservoir, oil recovery, water flooding
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16.08.11
A.A. Gareev, R.I. Vahitova, D.A. Saracheva. About effect of current frequency on heat state of electric centrifugal pump. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 113-118. http://www.ogbus.ru/authors/GareevAA/GareevAA_1.pdf ![]()
The article is devoted to researches of heat state of working plant of electric submersible centrifugal pump (ESCP) at high frequencies for valuation of well “potential” before geological technical measures. Gas content calculations was done in operative conditions with frequency of alternating current (AC) 52 Hz. Calculations show that, the increase of content of free gas in submersible electric centrifugal pump, causes the increase of pump temperature. It is necessary to calculate permissible increase limit of frequency, before decision to increase pump shaft rotation frequency by means of increase AC frequency. Before practical work of increase AC frequency of submersible electric centrifugal pump, it is necessary to analyses possible heat state of submersible electric centrifugal pump.
Keywords: Yujno-Samotlorskoye, controllable current frequency, salt sediment, shaft rotation frequency, separator, saturation pressure, gas factor, temperature, ESP, electrical submersible pump
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16.08.11
D.R. Muratshin, Yu.A. Gutorov. Analysis of influence reservoir properties of the Tarasovskoye oil field on hydraulic fracturing efficiency. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 103-112. http://www.ogbus.ru/authors/Muratshin/Muratshin_1.pdf ![]()
In process of the usages of the bore holes their capacity it falls. So methods of the artificial influence on well bottom zone of the bore hole is a powerful facility of increasing to efficiency of the production spare hydrocarbon. In connection with than appears need in undertaking the additional studies and determinations of the optimum complex action.
Keywords: hydraulic fracturing, correlation dependence, reservoir properties, efficiency
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04.08.11
R.R. Khuzin, A.Sh. Miyassarov, N.I. Khuzin, G.S. Dubinsky, V.E. Andreev, Yu.A. Kotenev. The motivation technology water production restrictions in terrigenous reservoirs fields of west declivity South -Tatar crest. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 169-179. http://www.ogbus.ru/authors/Khuzin/Khuzin_1.pdf ![]()
In work is analysed overtaking well’s drowning of the Soldatsky uplift Keremetievsky oilfield, is diagnosis of the water production’s type in the producing wells. It is revealled that earlier they were used water shut-off technologies and reagents is ineffective.
Established the main causes of drowning, water shut-off technologies and additional studies of drowned wells is recommended. Technology tested on Keremetievsky oilfield is offered use on the other oilfields, located on South-Tatar Сrest.
Keywords: reservoir properties, bottomhole formation zone (BFZ), water production, water shut-off
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03.08.11
R.U. Mukhamadeev, A.А. Voltsov, А.V. Shemetov. Analysis of the effectiveness precipitators and coalescer on formation water treatment
. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 202-207. http://www.ogbus.ru/authors/Mukhamadeev/Mukhamadeev_1.pdf ![]()
Due to continuous growth of water production well fields developed in the second half of last century, increasing volumes of produced water preparation for subsequent injection into the system of flood recovery. At many installations preliminary water and oil treatment is necessary to improve existing technologies and equipment for treatment of produced water from oil and solids. The article covers the method of cleaning produced water by means of precipitants and coalescer different designs to be placed in a specially designed pilot plant, and provides a comparative analysis of their effectiveness.
Keywords: formation water, oil products, impurities, coalescers, precipitators, water treatment
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02.08.11
M.G. Kubrak. The choice of an optimal hauling down depth of an additional production column. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 191-201. http://www.ogbus.ru/authors/Kubrak/Kubrak_2.pdf ![]()
The technology of elimination of the untight production column by hauling down an additional column is described in the article. An example of geological-technical action was shown, which includes identification, confirmation and elimination of the leakage production column. The classification of geological-technical actions is composed, depending on an aim of a workover, according to potential extra action and giving recommendation for design of the hauling down depth of an additional column. Also examples of different geological-technical actions associated with elimination of the untight production column on Samotlor field in the article were shown.
Keywords: elimination of the leakage production column, an additional production column, watering decrease, take out of standstill
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02.08.11
M.K. Rogatchev, D.V. Mardashov, A.R. Mavliev. Development of the emulsion compositions to adjustment filtration properties of bottom zone of injection wells. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 180-190. http://www.ogbus.ru/authors/Rogachev/Rogachev_2.pdf ![]()
The results of laboratory comparison of emulsion compositions, that were made with emulsifiers Neftenol NZ and YALAN-E2, are presented. It is determined that the emulsion composition, which includes emulsifier YALAN-E2, is better than it's analogue in several characteristics and the practical application of this composition as a liquid in seepage regulation technologies on injection wells of Western Siberian oilfields is suggested.
Keywords: seepage regulation technologies, emulsion composition, emulsifier, thermostability, filtration, rheology
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29.07.11
L.G. Rakhmaev. The analysis of the factors, influencing upon the efficiency of hydraulic fracturing on injection wells in Vostochno-Leninogorskaya field of oil-and-gas production department "Aznakayevskneft". Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 119-124. http://www.ogbus.ru/authors/Rakhmaev/Rakhmaev_2.pdf ![]()
The efficiency of hydraulic fracturing according to the production rate and production performance of the neighboring recovery wells were assessed. The influence of such technological factors as breakdown pressure, perforated formation thickness, proppant volume, breakdown fluid volume was examined. Incremental oil production versus reservoir characteristics such as porosity, permeability, shaliness and oil saturation were analysed. Incremental oil production from respondent wells versus their distance to the nearest injection well fractured were studied.
Keywords: well, fracturing, pressure, production, porosity, permeability, shaliness
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26.07.11
L.G. Rakhmaev. About the reasonability of uncontrolled increasing the injectability at the late stage of oil field development. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 125-133. http://www.ogbus.ru/authors/Rakhmaev/Rakhmaev_3.pdf ![]()
The important factors affecting oil displacement is lateral and horizontal anisotropy that influences considerably upon conformance by a displacement agent. The behavior of the respondent production wells located near influencing injection wells, were studied. Production rate - water-intake rate relation were analyzed.
Keywords: well, permeability, reservoir, injection, formation, pressure, filtration
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25.07.11
A.A. Merkulov, Yu.G. Uluntsev, A.F. Gimaev. About evaluation extent of deteriorated wellbore permeability zone. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 165-168. http://www.ogbus.ru/authors/Merkulov/Merkulov_1.pdf ![]()
The article presents an evaluation of the radius of deteriorated wellbore permeability using two productivity ratios, which are taken from the initial and current stages operation of the well.
Keywords: well, productivity ratio, wellbore permeability, formation gas-dynamic fracturing
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24.07.11
I.G. Fattakhov. The identification technique of oil well water invasion ways. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 160-164. http://www.ogbus.ru/eng/authors/FattakhovIG/FattakhovIG_1e.pdf ![]()
http://www.ogbus.ru/authors/FattakhovIG/FattakhovIG_1.pdf ![]()
The questions about the reasons of oil well extracted product water encroachment are discussed in this article.
They are classified on three classes. The more significant characteristics are pointed for every class. The possible ways of water invasion into a borehole have been discussed when some distinctive reasons of this process have been determined. Peculiar interconnections and effect transit have been indicated according to block diagrams. The more convincing and awkward ways are particularly pointed. The nature of water, getting down the hole, served as the following differentiation category of water encroachment. Both groups are discussed in detail and some of them have the examples.
Keywords: water encroachment, reasons, ways, the nature of water, entry, leak-proofness, cone
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22.07.11
R.I. Timergaliev. Development and field experience of a double-handle tubing tongs. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 147-153. http://www.ogbus.ru/authors/Timergaliev/Timergaliev_1.pdf ![]()
The paper describes the construction, kinematic (dynamic) scheme and the test results based on the original methodology of double double-handle tubing tongs, which allows uniform tightening of threaded connection and lowers friction work during tonguing/uncoupling of tubing.
Keywords: tubing thread, oil well tubing, friction, strain, tubing tongs, double-handle tubing tongs
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08.07.11
A.S. Topolnikov, K.R. Urazakov, R.I. Vahitova , D.A. Saracheva. The method of calculation of parameters of jet pump attached to joint operation with submersible electric pump. Electronic scientific journal "Oil and Gas Business", 2011, Issue 3, pp. 134-146. http://www.ogbus.ru/authors/Topolnikov/Topolnikov_1.pdf ![]()
The paper is dedicated to the theoretical explanation of choice of parameters of a jet pump, which is used to inject gas from the hole clearance of oil well when it is operated by ESP. Two different situations are considered: in the first case the whole amount of separated gas at the pump intake is injected into the lift tube by the jet pump, in the second case a part of separated gas is taken to the surface line. For each case the computation of optimal characteristics of jet pump (pump depth, nozzle diameter) is done, which depends on the key operation parameters of well (reservoir pressure, productivity index, gas-oil ratio, water cut).
Keywords: jet pump, gas content, gas injection, ejection, the hole clearance of oil well, ESP
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02.06.11
M.O. Djimi, L.E. Lenchenkova. Analysis of results the use hydraulic fracturing modeling on Kome oil field in the republic of Chad. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 478-484. http://www.ogbus.ru/authors/Djimi/Djimi_1.pdf ![]()
Results of the analysis of geological and physical characteristics and indicators of the Kome development oil field in the republic of Chad. The following characteristics were confirmed: highly permeable reservoirs, heavy oil, high temperatures. Operations to increase the productivity index of this field have been a conducted for seven years. This work is based on the use of different applications of hydraulic fracturing. The efficiency of the fracturing depends on the amount of fluids. It also depends the fluid-sand carrier (Proppant); precisely on its concentration, on its sequence of entry into the cracks and finally on the rate of injection process during the hydraulic fracturing.
A block diagram of the choice of hydraulic fracturing technology has been proposed. The most effective TSO hydraulic fracturing has been identified. Moreover, it has been noted that the most effective fluid-sand carriers for hydraulic fracturing are the water-based, time adjustable gels. For this reason, we recommend research on enhancing hydraufrac TSO technology be oriented to the experimental study of process liquids and to the modeling of key parameters which take into account the minimum values of leaks in the reservoir rock.
Keywords: tip-screen-out, hydraulic fracturing, productivity index, fracture, width, pressure gradient, leak off, transmissibility, process liquids.
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31.05.11
L.G. Rakhmaev. The analysis of the efficiency of reservoir stimulation performed on injection wells in Vostochno-Leninogorskaya field of oil-and-gas production department “Aznakayevskneft”. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 469-477. http://www.ogbus.ru/authors/Rakhmaev/Rakhmaev_1.pdf ![]()
The efficiency of three workovers performed on injection wells (hydrochloric acid treatment, hydrofracturing, viscoelastic colloid system on basis of alkali silicate) were examined. The impact of such geophysical factors as formation thickness, porosity, permeability, oil saturation, and shaliness on incremental ultimate recovery were appraised. The limit values of the geophysical parameters, securing the economical profitability of bottom-hole formation zone treatment were determined.
Keywords: well, formation (layer), injectivity, thickness, porosity, permeability, production
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31.05.11
E.V. Levanova. Retrospective analysis of Devonian deposits recovery at Romashkinskoye oil field. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 438-447. http://www.ogbus.ru/authors/Levanova/Levanova_1.pdf ![]()
This article presents a retrospective analysis of Devonian deposits development at one of the unique Romashkinskoye field areas done with the aim of studying some of the challenging issues of oil extraction. Oil production forecast was based on functional dependencies (characteristics of displacement); 5 best relationships defined by Theil criteria for the analysis of arithmetical mean values were used. Results obtained in the course of the research make it possible to assess the prospects for optimizing the deposits development.
Keywords: deposits recovery, oil recovery factor, terrigenous deposits, Upper Devonian, displacement characteristics, retrospective analysis
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31.05.11
T.V. Tokareva. Sidetrack drilling and operational experience and efficiency on mature oil fields . Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 457-468. http://www.ogbus.ru/authors/Tokareva/Tokareva_1.pdf ![]()
The article deals with operating sidetracks on lower Devonian and lower Carbonic terrigenous formations of mature oil fields on the territory of the Republic of Bashkortostan, Russia. Various administrative, engineering and technological solutions for drilling sidetracks are discussed. Regression analysis is recommended to study the impact of the sidetrack bottomhole positioning, the geology of the structures being drilled and field performance of the surrounding wells on the water-cut and production rate of the sidetrack.
Keywords: sidetrack, oil production, liner, regression analysis
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30.05.11
N.A. Petrov, R.A. Ismakov, F.N. Jangirov. Field experience and recommendations on improvement of technologies to re-sealing the threaded connections of the oil grade pipes . Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 448-456. http://www.ogbus.ru/authors/PetrovNA/PetrovNA_20.pdf ![]()
In the article considered results of the field experiment on the re-sealing the threaded connections of casing strings and water zone isolation in the wellbore of West Siberia Noyabrsk oil field. Designed recommendation on improvement repair-insulating work.
Keywords: threading connection, resin, hardener, re-sealing, visco-elastic composition, organo-silicon compound, filler, "sliding" plugging
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30.05.11
D.S. Svetlichnyy, A.G. Didukh, T.K. Aldyarov, D.A. Kim, M. Nawrocki, A.A. Baktygali. Study of heat treatment and cooling rate of oil mixtures transported by "Kumkol-Karakoin-Barsengir-Atasu" pipeline. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 427-437. http://www.ogbus.ru/eng/authors/Svetlichnyy/Svetlichnyy_1.pdf ![]()
Transportation of Kazakhstan waxy crude oil mixtures through long distance pipelines, such as "Kumkol-Karakoin-Barsengir-Atasu" entails various difficulties due to its composition. One of the most effective way to improve rheology is using heat treatment. The objective of this work is to investigate the effect of heat treatment on the rheology of oil mixtures and wax deposition tendenc in addition, to studying the influence of cooling rate and kinetics of wax crystallisation in accordance to the JMAK (Johnson-Mehl-Avrami-Kolmogorov) theory. The results indicate that increasing the value of heat treatment leads to improvment of rheological parameters of oil mixtures and a decrease in wax deposition but no change to the shape of crystals.
Keywords: rheology, paraffin, wax deposition, JMAK theory
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25.04.11
M.G. Kubrak. Application of remedial cementing in Samotlor oilfield. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 82-94. http://www.ogbus.ru/authors/Kubrak/Kubrak_1.pdf ![]()
The technology of squeeze job applied on Samotlor oilfield is described in the article. In short there are enumerating a selection criterion of the well-candidates, specifying common plan of the workover, considering technological factors influenced on a workover succession and giving recommendation for father exploitation after geological-technical action.
Keywords: remedial cementing technology, reduction waterflow, decrease watering, take out of standstill
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22.04.11
E.M. Akhiyartdinov, A.E. Akhiyartdinov, M.M. Kabirov. Optimization processes of oil field collection pipeline system within uncertainty conditions of pump stations operation. Electronic scientific journal "Oil and Gas Business", 2011, Issue 2, pp. 95-102. http://www.ogbus.ru/authors/AkhiyartdinovEM/AkhiyartdinovEM_1.pdf ![]()
The article is dedicated to oil transfer optimization processes based onto analysis of power consumed by field booster pump stations (BPS) operating with collection pipelines and producing wells combined into satellite group units. The article shows that oil transfer optimization in uncertainty conditions of BPS operation shall be efficiently performed with analysis of cyclograms of BPS and collection pipeline operation that reflect process modes and energy consumption of oil transfer procedures. Cyclograms are periodical functions in the form of relationships between each pump output pressure and consumed power, or analysis time period. Cyclogram periods and their corresponding relative arrangement are changing during the operation, and therefore, cyclogram analysis methods, including statistical analysis, shall be subjected to systematic corrections.
Keywords: optimization processes of oil field collection, booster pump station, cyclogram, periodical function
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16.02.11
A.H. Ahmed Kamel. Drag Reduction Behavior of Polymers in Straight and Coiled Tubing at Elevated Temperature. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 107-128. http://www.ogbus.ru/eng/authors/AhmedKamel/AhmedKamel_1.pdf ![]()
The drag reduction resulting from the addition of small amount of linear macromolecules has found various applications in many areas of the oil & gas industry; including well completion, workover, drilling operations, and hydraulic fracturing.
Temperature is among the factors affecting the extent of drag reduction. Other factors include salinity, polymer type and concentration, molecular weight and distribution, solvent chemistry, pH, ionic strength, molecular conformation, flow geometry, and degree of mechanical shearing. Despite the widespread use of brine solutions as base fluids in fracturing the deep hot formations, the effects of temperature on the drag reduction characteristics of polymers have received the least attention. Most studies have considered the ambient temperature conditions. Therefore, the aim of the present study is to experimentally investigate the effect of temperature on the extent of drag reduction of polymers flowing in straight and coiled tubing.
The most commonly used anionic polyacrylamides; Nalco ASP-820 is investigated. ASP-820 is a sulfonate containing a partially hydrolyzed polyacrylamide (PHPA). The pre-determined optimum concentration of ASP-820 polymer of 0.07 % (vol.) is used. A small flow loop with straight and coiled tubing sections is employed. To investigate the effect of temperature, tests are conducted with fresh water at 22, 38 and 55°C.
It is found that ASP-820 polymer is a quite effective drag reducer in circular pipes. Drag reduction in the range of 30-80% is noticed. Drag reduction is more significant in straight tubing than in coiled tubing. Temperature shows a drastic effect on the drag reduction characteristics and its effect differs from straight to coiled tubing. Correlations to predict drag reduction at elevated temperature are developed. These results are presented and discussed in detail.
Keywords: coiled tubing, straight tubing, drag reduction, polymers, temperature, well completion
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12.02.11
A.N. Volochkov, V.G. Umetbaev. Increase reliability of exploitation depth well equipment in condition of salt sedimentation on kirskoe and kottinskoe oilfields. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 99-106. URL: http://www.ogbus.ru/authors/Volochkov/Volochkov_1.pdf ![]()
The article is about reasons of form carbonate sedimentation on West Siberian oilfields exploitation by JSC "Bashneft", analysis of results efficiency applying methods and technologies preventing salt formation. There is 40 % average efficiency of use solvent SONSOL 3003. Expose more efficient technologies against salt formation: measure out in doses inhibitor SONSOL 2001 and 2002 by special capillary sleeve in a well, inject solvent by tube with waiting for reaction on 1-5 hours. In connection with small efficiency describing in article technologies, suggest new way of delete carbonate salt formation from depth well equipment which found on using organic solvent, acid, corrosion and salt sediment inhibitors.
Keywords: Kirskoe, Kottinskoe, form of salt, inhibitor, solvent, carbonate sediment
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11.02.11
V.A. Baikov, R.M. Zhdanov, T.I. Mullagaliev, T.S. Usmanov. Selecting the optimal system design for the fields with low-permeability reservoirs. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 84-98. http://www.ogbus.ru/authors/Baikov/Baikov_2.pdf ![]()
One of the urgent problems of field development is the selection of optimal in technical-economic parameters system design. This paper presents a new method of selection of systems for vertical (deviated) wells with hydraulic fracturing and auto hydraulic fracturing. The application of this technique for Priobskoe field allowed to find more efficient system design than being used. In Oil Company Rosneft this new system is called the linear "Ufa" system.
The linear system design was realized in experimental part of Priobskoe oilfield. Special research program is conducted now to study: 1) the direction of crack fracturing; 2) the effect from auto hydraulic fracturing; 3) sweep efficiency changes, etc.
Keywords: hydraulic fracturing, auto hydraulic fracturing, oilfield development system with hydraulic fracturing, new systems of oilfield development, sweep efficiency
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10.02.11
A.N. Nikitin, I.D. Latypov, A.M. Haidar, G.A. Borisov, A.V. Pestrikov, A.A. Kolesnikov. Special well tests to fractured water injection wells. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 76-83. URL: http://www.ogbus.ru/authors/Nikitin/Nikitin_1.pdf ![]()
Hydraulic fracture geometry investigation is one of the most actual problems. The geometry of hydraulic fracture calculated by service companies often differs from actual one, that significantly affects the design of field development system and optimization of reservoir pressure maintenance system. Correlation model of the geomechanical properties of rocks on basis of special set of loggings, which application can increase the accuracy of the fracture geometry prediction, is considered. Recommendations of well candidate selection for acoustic logging are given.
Keywords: hydraulic fracturing, acoustic logging, density logging, geomechanical properties, horizontal stress, Young modulus, Poisson coefficient, hydraulic fracture geometry
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09.02.11
V.A. Baikov, A.Ya. Davletbaev, R.N. Asmandiyarov, T.S. Usmanov, Z.Yu. Stepanova. Special well tests to fractured water injection wells. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 65-75. http://www.ogbus.ru/authors/Baikov/Baikov_1.pdf ![]()
This work considers multi-rate injection tests of fractured wells for the purpose of well capacity relation to injection pressure exposure on condition that fracture opening pressure is exceeded. The non-linear relationship between the steady-state pressure and injection rate indicated that continuous change in fracture geometry had to be taken into account. These tests were useful to determine individual layer injectivities, current formation pressures and fracture opening pressures of layer.
Keywords: fracture closure (opening) pressures, growth of fracture length, low permeability, multi-rate injection tests, fall-off test
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09.02.11
A.R. Latypov, T.G. Zagurenko, A.Y. Davletbaev, T.S. Usmanov, I.V. Kostrigin, R.I. Abdullin. An integrated approach of planning well tests and geological and technical measures. Electronic scientific journal "Oil and Gas Business", 2011, Issue 1, pp. 57-64. http://www.ogbus.ru/authors/LatypovAR/LatypovAR_1.pdf ![]()
The article describes the results of a joint approach to the selection and justification of the "problem" wells for planning well tests and geological and technical measures. The focus of the work centered on the timely identification of causes of decline in rates of producing wells and planning geological and technical measures necessary to maintain a liquid rate at the required (project) level.
Keywords: well test planning, geological and technical measures, productivity map, pressure map
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19.12.10, M.Yu. Kotenev, V.E. Andreev, K.M. Fedorov, V.N. Khlebnikov
INVESTIGATION AND OPTIMIZATION OF EMULSION TREATMENT FOR SELECTIVE GAS AND WATER ISOLATIONIN FRACTURED RESERVOIRS
http://www.ogbus.ru/authors/KotenevMYu/KotenevMYu_2.pdf (in Russian)
http://www.ogbus.ru/eng/authors/KotenevMYu/KotenevMYu_2e.pdf
Filtration and rheology characteristics of the inverse emulsion based on a low viscosity, low tar oil, the effect of the direction of injection of the emulsion, oil saturation and permeability of porous media on the filtration results are studied in this research paper. Hydrophobic inverse emulsion can be used to align the front of oil displacement by water in fractured reservoirs (injection into injection wells) and for the selective gas and water isolation in the producing wells. It is recommended to use the emulsion compositions with low content of oil phase in the latter case. A mathematical model of emulsion treatment on the reservoir is developed and optimum parameters of the technological characteristics of the process are established.
Keywords: emulsion, fractured reservoir, viscosity, permeability of the porous medium, surface-active agent, stabilizer, two-phase filtration, water saturation
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16.12.10, A.Yu. Kotenev, O.F. Kondrashev, R.F. Sharafutdinov, A.A. Sadretdinov
MODELLING OF OIL DISPLACEMENT PROCESS IN HETEROGENEOUS RESERVOIRS
http://www.ogbus.ru/authors/KotenevAYu/KotenevAYu_2.pdf (in Russian)
http://www.ogbus.ru/eng/authors/KotenevAYu/KotenevAYu_2e.pdf
In order to calculate parameters of oil displacement by water flooding a mathematic model was built, considering joint and separate reservoir exploitation. Regression equations for Yasnopolyanskiy horizon of one large field of Permian-Bashkirian arch have been derived, which enable to forecast heterogeneity parameters, affecting degree of reserves recovery, as well as to identify zones with the highest oil recovery coefficients. Application of physical and chemical stimulation methods enable to increase length of well life and duration of profitable exploitation of productive reservoirs.
Keywords: permeability coefficient, heterogeneity, water-cut, regression model, surface-active substance
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12.12.10, M.Yu. Kotenev
TECHNOLOGIES JUSTIFICATION AND IMPACT REGULATIONON VARIOUS CATEGORIES OF HARD-TO-RECOVER AND REMAINING OIL RESERVES IN CARBONATE RESERVOIRS
http://www.ogbus.ru/authors/KotenevMYu/KotenevMYu_1.pdf (in Russian)
http://www.ogbus.ru/eng/authors/KotenevMYu/KotenevMYu_1e.pdf
Three types of the most widespread categories of hard-to-recover remaining reserves (I - in sheet oil pools, II - in massive reservoirs, III - high-viscosity oil) have been identified in the Volga-Ural oil and gas province (Bashkortostan and west part of Tatarstan). Justification of the most effective regulation technologies with the use of the base treatment agent has been carried out for each of the reserves group. Presented are the details of the laboratory research, geological and mathematical modelling.
Keywords: remaining oil reserves, oil recovery, carbonate reservoir, producing well, injection, oil displacement, emulsion
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16.11.10, A.V. Strekalov, M.S. Korolev, O.V. Fominykh
A.V. Strekalov, M.S. Korolev, O.V. Fominykh
http://www.ogbus.ru/authors/Strekalov/Strekalov_3.pdf (in Russian)
Possibilities of increase of level of check and control of systems of a formation-pressure maintenance by means of creation and use of the unified model are reviewed. The model allows to supervise any hydrosystem and to predict reactions of hydraulic controls of its members at entering of any engineering changes. Practical application of the tendered model has allowed to augment energy caretaking in hydrosystems and to enhance accuracy of conformity to technological modes of water flood at the expense of complex optimisation.
Keywords: hydraulic, systems, nonlinear, networks, models, layers
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09.11.10, G.B. Agamalov, Z.Z. Aliyev, N.A. Romanova, R.R. Rizvanov
WEIGHT CALCULATION METHOD OF SUCKER-ROD PUMP'S MOUTH(SURFACE) BALANCING SYSTEM\
http://www.ogbus.ru/authors/Agamalov/Agamalov_1.pdf (in Russian)
To equalize the load on the drive motor pumping unit is proposed to equip the pumping unit wellhead balancing the load. The method of calculating the weight of the proposed wellhead balancing load for static, dynamic regime of the well and during the relaxation of the pumped product. The effect of viscosity of emulsion in the relaxation process after running well in the work force of friction in the equation of balance, and therefore the weight load balancer
Keywords: pumping unit, rod, lever, plunger, wells.
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28.10.10, A.S. Ushakov
THE ANALYSIS OF PERFORMANCE OF A HYDRAULIC FORMATION FRACTURING IN HORIZONTAL HOLES OF FIELDS OF THE WESTERN SIBERIA
http://www.ogbus.ru/authors/Ushakov/Ushakov_1.pdf (in Russian)
Wide application of holes with the horizontal termination on fields of Western Siberia has demonstrated, that results of separate operations have unsatisfactory nature, both from the economical point of view, and from a stand of optimum development of stocks. In this connection there is a necessity for conducting of complementary studies and definition of an optimum complex of geologo-technical actions.
Keywords: interval hydraulic fracturing, horizontal well, rock stresses, directional hydraulic fracturings
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04.10.10 N.A. Petrov
THE NEW COVERING WITH MULTIFUNCTIONAL PROPERTIES FOR FIELD PERFORMANCE COLUMNS
http://www.ogbus.ru/authors/PetrovNA/PetrovNA_18.pdf (in Russian)
The technical decision is considered on fastening the bore hole working field performance columned with since covering in lower part by material "Izollat". Herewith in become thoughtful zone opposite pillars with covering bosom the portion of the cement solution, processed increasing additive SIGB.
Keywords: field performance pillar, heat warmth covering, microspheres, cement solution, increasing additive, hydrophone, anticorrosive, characteristic, deformation, degree of the traction, sediment, asphalt since the youth (ASPO)
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07.09.10, G.I. Mamedova
INVESTIGATIONS OF RHEO-PHYSICAL FEATURES OF ABNORMAL FLUIDS
http://www.ogbus.ru/authors/MamedovaGI/MamedovaGI_1.pdf (in Russian)
In this article the issues are considered with regard to effect of asphaltenes-resins and paraffinaceous impurities on rheo-physical properties of oils during unstable regime of flow in the system "layer-well", where effect of NNN (nonuniformity, nonlinearity and nonequilibrium) is observed.
Investigations with highly paraffinic oils show that equilibrium condition between rate of shear and shear stress is not established instantly. Shear stress relaxes during quite long period of time, up to several hours.
Analysis of oscillations of working technological information of wells, producing non-newtonian oils, show that layer system can be presented as a complex structure subjected to different kind effects, which is justified by fluctuating character. This needs to be taken into account while the different kind regulation of different processes of fields development and oil production.
Keywords: high-wax oil, fluid shear rate, non-Newtonian oil, mining, asphaltene, resin and paraffin deposits
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13.08.10, E.A. Yasakov, M.L. Pavlov, R.A. Basimova
RESEARCH OF PROPERTIES OF KNOWN (RS-N) AND DEVELOPED DEMULSIFIERS FOR DEWATERING AND DESALTING OF OIL-WATER EMULSIONS
http://www.ogbus.ru/authors/Yasakov/Yasakov_1.pdf (in Russian)
http://www.ogbus.ru/eng/authors/Yasakov/Yasakov_1e.pdf
New compositions of demulsifiers have been developed for breaking of oil-water emulsions. Demulsifying ability has been researched for known (RS-N) and developed demulsifiers at breaking emulsions of three different types of crude oils. Optimal concentrations of demulsifiers have been selected.
Keywords: preparation of oil, efficiency of separation, breaking of oil-water emulsions, development of compositions of demulsifier, demulsifying ability of demulsifier
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28.07.10, N.A. Petrov, F.N Jangirov
STAND TEST SEALED HERMETICALLY COMPOSITION AND LUBRIFICANT FOR THREADING JOINING THE PIPES OIL SCHEDULE
http://www.ogbus.ru/authors/PetrovNA/PetrovNA_17.pdf (in Russian)
The broughted factors, influencing upon hermeticity of the threading joining the pipes oil brand. The described methods to repeated encapsulating the threads, including ways and material for liquidation pluming in bore hole. The dtated results of the stand studies different composition. The most efficient composition is: AEFS + OZH-1 + Keragen-70. Powder Additive P-10Д to lubricants threaded connections allowed fold increase leakage pressure pipes.
Keywords: not tight, threading join, pipes oil brand, stand, repair-insulating work, resin, hardener, filler, lubrificant, additive
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08.07.10, N.A. Petrov, I.N. Davydova
SELECTION POLYFOAM COMPOSITION FOR MASTERING THE BORE HOLES
http://www.ogbus.ru/authors/PetrovNA/PetrovNA_16.pdf (in Russian)
The broughted results of the studies foamy composition with oleophylic and characteristic for terrigenous (polymictic) of the collector. Besides, selection data foamy composition are stated on mineralized are stated to water for mastering the bore holes prone to hydrate. Studied broad spectrum SUNG (anisotropy, cationic, non-ionogenic) and the most accessible stabilizers is studied.
Keywords: foam, stability of foams, surface-active substance, the stabilizer, a salt solution, hydrophone, oleophylic properties, layer water, hydratabilities
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30.06.10, A.S. Portnyagin, A.F. Fedorova, Yu.N. Mikhailov
THE EXPERIMENTAL STUDY OF THE INFLUENCE OF THE LOW FORMATION TEMPERATURE AND HIGHLY MINERALIZED FORMATION FLUIDS OF THE IRELYAKH GOF ON THE EFFECIENCE OF THE DISPLACEMENT AGENTS OF THE MINERAL AND POLYMER NATURE
http://www.ogbus.ru/authors/PortnyaginAS/PortnyaginAS_1.pdf (in Russian)
The results of the investigations show that filtration-capacitive properties of the reservoir decrease at the use of a highly mineralized agent for maintaining the reservoir pressure. Experimental studies reveal that solutions on the carboxymethylcellulose base have a larger stability of properties at oil displacement in comparison with the solutions on the surface-active agent base. The carboxymethylcellulose solution with the concentration of 5 g/l is characterized by the highest value of oil recovery ratio (68%). Thus it can be recommended as a basic displacement solution for reservoir pressure maintenance and for increasing the oil recovery ratio on the Irelyakh field.
Keywords: gas and oil field, reservoir pressure maintenance, oil displacement agent, formation water, oil recovery ratio
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18.06.10, N.A. Petrov, I.N. Davydova
OPENING AND DEVELOPMENT OF PRODUCTIVE LAYER 1BS-10 UMSEYSKOGO OILFIELD ENNOBLED TECHNOLOGICAL SOLUTIONS
http://www.ogbus.ru/authors/PetrovNA/PetrovNA_15.pdf (in Russian)
The organized geologic-geophisical feature of the layer 1БС-10 November oil-and-gas of the region West Siberia. Recommendations are given at the option bore in either event solution for qualitative opening oil polymictic layer. Emphases is spared composition on base SHFLU (for removing ASPO) with deemulsifier and IPS. Broadly lit results of the studies foaming composition for mastering the bore holes on base nonionic, cationic, amphoras, anisotropy and complex superficially-active material with different polymeric stabilizer. Described technology of the preparation foamy composition.
Keywords: collector, stippler, bore solution, perforation liquid, foaming composition, mastering the bore holes, chemical reagent, foaming, superficially-active material, deemulsifier, stratum water, inhibitor, saline solution, stability spume
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15.06.10, A.V. Strekalov, M.S. Korolev, O.V. Fominykh
CHECK, REGULATION AND OPTIMIZATION OF HYDROFLOOD PATTERNS OF OIL BENCHES
http://www.ogbus.ru/authors/Strekalov/Strekalov_1.pdf (in Russian)
Systems of maintenance of reservoir pressure (MRP), used as hydrosystems providing technology of water flood, have a number of features in operation and management. These features, first of all, are caused by hydraulic intercoupling of a ground-level pipe range with hydrosystem of productive strata. In given article methods of use of model of hydrosystems taking into account branch aspects for looking up of an optimum state of systems PPD are esteemed.
Keywords: system PPD, optimisation, water flood
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29.04.10, G.N. Zholobova, E.M. Khisaeva , A.A. Suleimanov, V.F. Galiakbarov
THE IMPROVEMENT OF OIL PREPARATION PROCESSES
http://www.ogbus.ru/authors/Zholobova/Zholobova_1.pdf
Nowadays the question of improvement of oil desalting quality is rather actual. The article gives the application of pi-theorem for the conclusion of Weber criterion which characterises drop crushing and mixture of water and oil in a stream. The model connecting the efficiency of desalting and the Weber criterion is received.
Keywords: borehole, chink, layer waters, disperse system, salt, conversion, catalyst, remaining oil product, oil dehydration and desalting, dispersion, non-dimensional factor, parameter, pi-theorem
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23.04.10, V.G. Nevolin
THE EXPERIENCE OF THE SONIC INFLUENCE IN THE PRACTICE OF THE OIL RECOVERY IN THE PERM DISTRICT
UDC 576.8: 622.276: 620.197: 622.276.43: 622.244.422.063: 622.245.43
Perm, 2008. 54 p.
http://www.ogbus.ru/authors/Nevolin/Nevolin_1.pdf (in Russian, Manuscript received December 23 2008)
The experimental and theoretical researches of using of the hydrodynamic radiators at the oil fields of the Perm district, carried out by PermNIPIneft since 1970-th years till present time, are reviewed. The results of the experiments on the influence of the hydrodynamic radiators on the oil production fluids (sewage, water, water- and oil emulsions, plug fluids) and the well zone of the oil bed, are described.
The recommendations on raising the effectiveness of the sonic radiation are given.
Keywords: acoustic influence, drilling fluid, water-isolation jobs, hydrodynamic radiators, dispersing of the contaminations, fluid production, oil production, bacterial activity, water flood, sound-chemical reactions, acid treatment of wells, corrosion activity of fluid, water cut production, well injectivity, sewage, technology of the influence
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16.04.10, Kudasheva F.H., Badikova.A.D., Musina A.M., Mutallov I.U.
COMPOSITIONS FOR OIL-SWIPING ON THE BASE OF PETROCHEMISTRY WASTES
http://www.ogbus.ru/authors/Kudasheva/Kudasheva_1.pdf (in Russian)
The possibility of using petrochemical and chemical production wastes has been approbated, particularly of organic residual of ammonium sulfate production process from outlet sulfuric acid of isoalkanes alkylation process in the composition for oil-swiping boost. The considerable quantity of the sulfonic acids and sulfonic ethers enter into the composition, which provide surface-active properties and promote to the decrease of surface strain on the border of "oil-brine water".
Keywords: petrochemical and chemical waste, sulfonic acids, composition for oil-swiping boost
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09.02.2010, V.S. Agaev
DECISION-MAKING AT REGULATION OF THE TECHNOLOGICAL OPERATING MODE OF PUMPER OIL WELLS ON THE BASIS OF THE THEORY OF ACCIDENTS
http://www.ogbus.ru/authors/Agaev/Agaev_2.pdf (in Russian)
The article is devoted to the system analysis of technological indicators of operation pumper oil wells equipped with installations of pumper oil well. Output of oil wells, water and gas, and also delivery rate of the pump are exposed to the analysis. Such analysis is required at decision-making on regulation of work of oil extracting wells. Thus it is necessary to be guided by dynamics of change of the necessary technological indicators during a certain time interval. In most cases for this purpose in practice it is guided, as a rule, by absolute values of indicators that is erroneous as the valuable information, thus containing in initial data on tendencies of behavior of the most operated object is ignored. Thanks to this information it is possible to predict consequences of those or other actions for regulation of operating modes of wells and accordingly to appoint such changes of modes which will promote an oil recovery gain at reduction of drowning rates, economy of reservoir energy at the expense of rational redistribution of the expense of passing gas and hobby of efficiency of pump installations. For the decision of this problem, special criteria of change of operating modes of the extracting wells, based, in particular, on application of elements of the catastrophe theory are used.
In article, on the basis of the differential equations known of this theory corresponding to accident of type "fold", dynamics of change of some technological indicators, such as on outputs of oil, gas and water, and also factor of giving of the pump is modeled. These indicators easily give in to measurement and the account in trade conditions. Their processing makes more weighed decisions based on the simultaneous account of tendencies of change of the most important indicators from a point - sight of regulation of operating modes of chinks. The algorithm of calculation is described and the concrete numerical example is spent.
The given settlement scheme is computerized and used for numerous extracting chinks of the enterprises of the production association "Azneft".
Keywords: model, well, differential equation, discriminant, pumper well, delivery rate, operating practices control, theory of accidents, regression equation, technological indices, criteria, systems approach, correlation, algorithm, cumulative production
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08.02.2010, V.S. Agaev
ABOUT THE TECHNIQUE OF GROUPING OF OIL WELLS WITH SHOWS OF GAS BY THEIR POTENTIAL POSSIBILITIES ON THE BASIS OF PARETO PRINCIPLE
http://www.ogbus.ru/authors/Agaev/Agaev_1.pdf (in Russian)
It is known, that actions carried out on oil fields for regulation of modes of extracting wells have adaptive character, and mention not what individual objects, and all difficult interconnected and co-operating system of the elements making the developed deposit, set of operational and delivery chinks, and also a complex ground-based equipment. Such big and difficult system it is expedient to operate with use of the system approach. Thus splitting on a number of technological indicators of all fund of wells on separate groups, from for decrease in volume of the processed information, essentially simplifies and reduces the price of all managerial process. Besides at the system approach to become effective as more detailed analysis of expediency of carrying out of actions in each group, and their planning within the limits of all system as a whole.
In article as such method based on the system approach, grouping of wells by their potential possibilities proceeding from characteristics of hyperbolic distribution of oil outputs are offered. In practice, as a rule, similar properties the big and difficult systems where and it is possible to carry all process borehole workings out of deposits possess. It is known, that the behavior of these systems submits to Pareto principle, and distribution дебитов chinks on their size also corresponds to this principle. Unlike known works where, basically, are described to the mechanism of grouping of the chinks, based on quantitative signs, to article the algorithm of their "qualitative" grouping that allows to reduce and unify quantity of distinguished groups is resulted and to give them obviously known properties, inherent every possible to the versions met in practice. The number of distinguished groups is defined by quantity of processed indicators. As initial data it is used monthly average selections of oil, gas and water on each chink.
The algorithm of redistribution set chinks on eight groups, based on known property of hyperbolic distribution is stated. The given settlement scheme it is computerized and approved on a real example of the extracting wells equipped with pumper oil wells with installations and takes root for the various enterprises of a production association "Azneft". Regularly carried out calculations allows to watch dynamics of change of a condition of the chinks passing from one group in another that can promote construction of adaptive model of process of operation for all fund of wells.
Keywords: grouping, pumper oil well, operating practices, hyperbolic distribution, Pareto principle, systems approach, trend, algorithm, approximation, well, correlation, regulation, equation, monthly oil , gas and water production, rank, assortment, gas show, criteria
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28.01.10, N.A. Romanova, Z.Z. Aliev
THE WATER-GAS-OIL EMULSIONS RELAXATION PERIOD INFLUENCE ON HYDRODYNAMIC FRICTION FORCES
http://www.ogbus.ru/authors/Romanova/Romanova_2.pdf (in Russian)
The article is about influence of water-gas-oil emulsions relaxation process on hydrodynamic friction forces. Moreover the construction of air-compensator to decrease a probability of emergency situation on start-up stage and to compensate the liquid pressure pulsations in tubing is suggested.
Keywords: water-gas-oil emulsions, viscosity, sucker-rod pumps, interinsoluble mediums, hydrodynamic friction, air-compensator
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21.01.10, N.A. Romanova
THE PROCEDURE TO PLOT A MAP OF EFFECTIVE VISCOSITY OF WATER-GAS-OIL EMULSIONS FOR OIL WELLS EQUIPPED WITH SUCKER-ROD PUMPING PLANTS
http://www.ogbus.ru/authors/Romanova/Romanova_1.pdf (in Russian)
In this article we suggest a procedure to plot a map of effective viscosity of water-gas-oil emulsions based on effective viscosity calculation method. This procedure uses data of field dynamometer card, characteristic of operating practices of oil well, rod column composition information and physical-chemical properties of water-gas-oil emulsions.
Keywords: water-gas-oil emulsions, viscosity, sucker-rod pumps, interinsoluble mediums, tubing, empirical correlations.
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24.12.09, T.Sh. Salavatov, Al Sayed Ghareeb
PREDICTING THE BEHAVIOR OF WATER AND GAS CONING IN HORIZONTAL WELLS
http://www.ogbus.ru/eng/authors/Salavatov/Salavatov_1.pdf
Coning is a term used to describe the mechanism underlying the upward movement of water and/or the down movement of gas into the perforations of a producing well. Coning can seriously impact the well productivity and influence the degree of depletion and the overall recovery efficiency of the oil reservoirs.
Delaying the encroachment and production of gas and water are essentially the controlling factors in maximizing the field's ultimate oil recovery. Since coning can have an important influence on operations, recovery, and economics, it is the objective of this paper to develop a computer program for calculating the critical oil (or gas) rate to avoid coning of unwanted fluids into production wells and to predict the behavior of water and gas coning in horizontal wells.
Keywords: predicting, coning, horizontal well, critical rate, time to breakthrough
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04.12.09, T.R. Ibatullin
SAGD PERFORMANCE IMPROVEMENT IN RESERVOIRS WITH HIGH SOLUTION GAS-OIL RATIO
http://www.ogbus.ru/eng/authors/IbatullinTR/IbatullinTR_1.pdf
Paper addresses the issue of Steam Assisted Gravity Drainage (SAGD) performance in the reservoirs with various solution gas-oil ratios (GOR). Results of extensive reservoir simulation study show that during the steam injection gas comes out of solution and accumulates at the edge of the steam chamber. In cases of high methane content in the bitumen the effect of gas layer development ahead of the steam front becomes detrimental and reduces the efficiency of conventional SAGD performance. It was suggested that by adjusting injected fluid composition it is possible to mitigate negative impact of the reduced heat transfer from water steam to bitumen.
Keywords: steam assisted gravity drainage, SAGD, bitumen recovery, thermal recovery, steam and solvent co-injection
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04.12.09, T.R. Ibatullin
SAGD PERFORMANCE IMPROVEMENT IN RESERVOIRS WITH HIGH SOLUTION GAS-OIL RATIO
http://www.ogbus.ru/eng/authors/IbatullinTR/IbatullinTR_1.pdf
Paper addresses the issue of Steam Assisted Gravity Drainage (SAGD) performance in the reservoirs with various solution gas-oil ratios (GOR). Results of extensive reservoir simulation study show that during the steam injection gas comes out of solution and accumulates at the edge of the steam chamber. In cases of high methane content in the bitumen the effect of gas layer development ahead of the steam front becomes detrimental and reduces the efficiency of conventional SAGD performance. It was suggested that by adjusting injected fluid composition it is possible to mitigate negative impact of the reduced heat transfer from water steam to bitumen.
Keywords: steam assisted gravity drainage, SAGD, bitumen recovery, thermal recovery, steam and solvent co-injection
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19.08.09, Magomed Veliyev
NEW SOLUTION OF THE TASK OF THE INFLUX TO LIQUIDS TO BORE HOLE, IMPERFECT ON DEGREE OF THE OPENING THE LAYER
http://www.ogbus.ru/authors/Veliyev/Veliyev_1.pdf (in Russian)
Given article is dedicated to decision hidrodynamic problem of the influx to liquids to vertical bore hole, which has opened the thickness of the productive layer in free interval.
The purpose of the article is a reception of the analytical expressions for factor of the additional filtration resistances, shall create in process of the influx to liquids to bore hole, imperfect on degree of the opening the layer. The knowledge these factor necessary when sheduling the automatic system of the designing the development oil and gas deposit, since at present are absent the analytical expressions, on the grounds of which possible was form the algorithms of the solved task and machine programs for use them when undertaking the computing functioning on computer.
Got in article of the formula allow to define the debet of the bore hole for any opened interval of the thickness a layer.
Keywords: borehole, layer, liquid, oil, development, formula, davlenie. debet, consuption, permeability, function, influx, filtering
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11.06.09, M.E. Rozhkin
INFLUENCE OF GAS CONTENT IN OIL ON EFFICIENCY OF THE DOWNHOLE SUCKER ROD PUMP
http://www.ogbus.ru/authors/Rozhkin/Rozhkin_1.pdf (in Russian)
The article deals with the task of determining the effectiveness of the downhole sucker rod pump with deleterious effects of dissolved gas in oil. The results obtained in the paper show that the nonequilibrium factor significantly affects the efficiency of the borehole pumps. However, it should be borne in mind that these results were obtained in bench conditions, ie in circumstances where possible to provide only the influence of gas oil at the rate filing. Naturally, in the real world, such analysis can not hold. In this case you need statistical data processing operation of wells.
Keywords: gas content, modelling, downhole sucker rod pump, the rate filing
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27.04.09, Igor F. Rustamov, Yaroslav I. Gordeyev, Leyla A. Shihiyeva, Oktay T. Bagirov
ABOUT REALIZATION OF NEW COMPOSITE SYSTEM TECHNOLOGY FOR SALT SCALE CONTROL
http://www.ogbus.ru/authors/Rustamov/Rustamov_1.pdf (in Russian)
In the presence article the questions of salt scale formation in operational objects during an crude production are described. By the example of given problem analysis on a number of oil field in Russia, Azerbaijan and Kazakhstan was shown, that the salt scale problem especially strongly appear on a protractedly developed oil Fields. At that it is emphasized, that the wells operated by submersible electric centrifugal pump unit are range to a high risk group.
It is marked, that microbiological processes additionally complicate the problem due to a complex structure of scale deposit formation. Principal causes of salting-up process in bottom-hole area and primary reason of operational unsuccessfulness of some geologic and technical activity for rehabilitation of reservoir quality on the critical area of formation are described.
With the purpose of geologic and technical activity effectivization the technology of bottom hole treatment based on using ammonium chloride in a combination with surface active agent is offered.
Keywords: salt scale, watering, bottom-hole zone, submersible electrical centrifugal pumping, deposition with complex composition, inhibitors, ammonium chloride
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13.04.09, V.E. Sova
POTENTIAL ZONES OF WATERFLOODING OF THE RESERVOIR T1-III OF THE SREDNEVILYUISKY GAS CONDENSATE FIELD
http://www.ogbus.ru/authors/Sova/Sova_1.pdf (in Russian)
In following paper presented method for estimation of drainage area from wildcat well test data. Theoretical background and practical application are given. Best practices and limitations of the method also lighted.
Keywords: reservoir drainage area, wildcat well, well test, pressure build-up curve, infinite radial flow, pseudo-steady state flow equation
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09.04.09, A.I. Sivtzev
POTENTIAL ZONES OF WATERFLOODING OF THE RESERVOIR T1-III OF THE SREDNEVILYUISKY GAS CONDENSATE FIELD
http://www.ogbus.ru/authors/Sivtzev/Sivtzev_2.pdf (in Russian)
The investigation of the peculiarities of the pressure-water system and filtration characteristics of the reservoir T1-III of the Srednevilyuisky gas condensate field allowed to reveal the potential waterflooding zones.
Keywords: water-pressure system, "openness" of the production horizon, effective permeability, flooding zones
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13.02.09, Faisal S. Al-Reshedan, Ahamed Gawish, Hazim N. Dmour
EVALUATION THE METHODOLOGIES OF ANALYZING PRODUCTION AND PRESSURE DATA OF HYDRAULIC FRACTURED WELLS IN LOW PERMEABILITY GAS RESERVOIRS
http://www.ogbus.ru/eng/authors/Al-Reshedan/Al-Reshedan_1.pdf
Production data analysis approaches have advanced significantly over the past few years. While many different methods have been published in the literature, there is no single method that yields the most reliable answer. Analyzing production history and pressure data of a hydraulically fractured gas well in low permeability reservoir can be an effective way to estimate the well and reservoir properties. However, fractured gas wells in low permeability reservoirs represent a challenge to petroleum engineers. This is because of the presence of wellbore storage, formation damage and Non-Darcy flow effects around wellbore.
This study uses an advanced production analysis package, Topaze software, to evaluate the most applicable methods for use in determining well and reservoir parameters, and estimating the gas in place for hydraulically fractured gas wells in low permeability reservoirs. Field and simulated examples are presented to illustrate the evaluation of these methods. Results from this study show that modern methods such as Blasingame, Normalized Pressure Integral and the Flowing Material Balance are valuable analysis tools for production history and pressure data. Both pressure transient analysis and production analysis have been studied.
The interaction of changing wellbore storage and Non-Darcy flow effects on the analysis of production and pressure data have been studied. Results show that using flowing pressure data in production analysis will be more representative and descriptive of the reservoir than using wellhead pressure data for gas well.
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27.08.08, A.G. Gavrilov, A.N. Mardanshin, M.N. Ovchinnikov, A.V. Shtanin
THE WELL NEIGHBOURHOOD TESTING BY HIGH FREQUENCY FILTRATIONAL WAVES METHOD
http://www.ogbus.ru/eng/authors/Gavrilov/Gavrilov_1e.pdf
http://www.ogbus.ru/authors/Gavrilov/Gavrilov_1.pdf (in Russian, published at 24.05.07)
The vertical wells investigations are shown by the harmonic filtrational pressure waves method for shot time periods with minutes and tens minutes. The conclusion is made about the actual by putting the depth and mouth devices to well porous neighbourhood conditions. The special features of the interpretation the similar experimental results is considered.
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17.07.08, Adel M. Hemeida, Ahmed A. Gawish
FORMATION DAMAGE TESTS OF SOME COMPLETION FLUIDS
http://www.ogbus.ru/eng/authors/Hemeida/Hemeida_2.pdf
Completion and workover fluids are invading into the producing zone causing formation damage. This damage may be induced due to precipitation of some solid particles suspended in workover fluids or incompatibility of workover fluids with producing formation, formation water and crude oil. Therefore, brines are commonly used as workover fluids. In the present work, a laboratory study was carried out to investigate the effect of employing some workover fluids on formation permeability. Workover fluids used were 8.5 ppg low density calcium chloride brine, 14.5 ppg high density calcium chloride/calcium bromide brine, low density brine with 0.3 % surfactant and high density brine with 0.3 % surfactant (Petronate). Results showed that damage may be reduced when low density calcium chloride fluids are used. Also, the addition of surfactant (Petronate) to the workover fluids can improve formation permeability and reducing formation damage.
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09.07.08, Hazim N. Dmour, Eissa M. Shokir
PRE-POST FRAC TEST DATA ANALYSIS FOR HYDRAULICALLY FRACTURED VERTICAL TIGHT GAS WELL-FIELD CASE STUDY
http://www.ogbus.ru/eng/authors/Dmour/Dmour_1.pdf
Worldwide there are vast reserves of natural gas trapped in tight sandstone formation and due to the low viscosity of natural gas it can be easily recovered. To produce this huge amount of reserve from low permeability formation economically, hydraulic fracturing can be applied. Therefore, the objective of hydraulic fracturing for well stimulation is to increase well productivity by creating a highly conductive path (compared to reservoir permeability) a distance away from the wellbore into the formation.
The post treatment performance provides a good indication of stimulation success, whereas, pressure transient (PTA) and production data analysis for hydraulically fractured vertical well remains the most applied method to determine the reservoir and fracture parameters. Therefore, this analysis is a key element for optimization of hydraulic fracturing process and forecasting well performance.
This paper discus the analysis of pressure and production data from hydraulically fractured vertical well in low permeability sandstone reservoir. Whereas, Pressure transient analysis is used to evaluate the effective fracture parameters such as fracture half-length, fracture conductivity and reservoir properties. Field example of application of production data analysis for vertical fractured well are presented.
The aim of this study is to evaluate the gas well productivity as a result of hydraulic fracturing treatments compared to the pre fracturing productivity and to estimate the petrophysical properties of the gas well from MIT testing data. Moreover, a discussion of how significant the increment in gas productivity was achieved with a very high propped fracture treatment success rate, is also presented. Furthermore, a view of how the correct design of fracture treatments can enhance reservoir performance and the recovery rate is discussed in details.
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30.06.08, A.F. Shakurova
FRACTURE APPLICATION EFFECTIVENESS ANALYSIS ON BAVLY OILFIELD
http://www.ogbus.ru/authors/Shakurova/Shakurova_1.pdf (in Russian)
There is performance analysis of applying hydraulic seam fracture for increasing oil recovery of different terrigenous collectors on Bavly oilfield. It is explored the influence filtration-capacitive collector properties on oilcovery growth later on hydraulic seam fracture. It is shown that effectiveness of this technology depends not only on indicated characteristics but on rheology and conditions of hydraulic seam fracture.
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07.06.08, D.V. Dolgov
ON CALCULATION OF THE GAS CONTENT FOR THE POTOCHNOYE OIL FIELD
http://www.ogbus.ru/authors/Dolgov/Dolgov_2.pdf (in Russian)
Experimental studies of differential liberation for oils from the BV-10, BV-18, BV-22 zones of the Potochnoye oil field were conducted. It was revealed that the degassing curves are linear and have different angles of inclination and the full value of gas-oil ratio at a pressure of 1MPa. Straight-line portions of the curves cross the gas-oil curves in the same point - 14.5 m3/m3. It allowed us to establish universal dependence of the gas content on the degassing pressure, gas-oil ratio and saturation pressure.
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24.05.08, K.B. Batmanov
STUDY TO OILS AND CONDENSATE KARACHAGANAKSKOE FIELD
http://www.ogbus.ru/authors/Batmanov/Batmanov_1.pdf (in Russian)
In given job reflected complications, which has place at production oil, gas and condensate on bigger in world oilgascondensate field Karaсhаganak.
The Oils field Karachaganak parafinish, contents of the paraffin in oils 3,1-12,4%, but in condensate - 1,9-5,6%, this causes postponing the paraffin in underground and overland equipment that negative influences upon process of the mining to oils and condensate. In work reflected methods fights with postponing the paraffin on technological equipment.
In process of the mining the gas and condensate in system infield connector and transport appear the hydrate plugs, which complicate the transport hydrocarbon cheese on pipe line.
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22.05.08, V.A. Ostreikovskiy, Ya.V. Silin
STATISTICAL RELIABILITY ANALYSIS OF OIL-FIELD PIPELINES
http://www.ogbus.ru/authors/Ostreikovskiy/Ostreikovskiy_1.pdf (in Russian)
The work is devoted to improvement of methods for statistical reliability analysis of oil-field pipelines. Existing methods for estimating probability of no-failure and new method for estimating probability of no-failure in dependence of pipeline length are given. Statistical data about oil-field pipelines failures in Western Siberia was analyzed. Probability of no-failure was calculated according to given methods.
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13.05.08, A.F. Fyodorova, E.Yu. Shits, A.S. Portnyagin
STUDY OF POSSIBLE USING THE POLYMER SOLUTIONS AS AGENTS OF OIL DISPLACEMENT IN THE FIELDS WITH ABNORMALLY LOW RESERVOIR TEMPERATURES
http://www.ogbus.ru/eng/authors/Fyodorova/Fyodorova_2e.pdf (in English)
http://www.ogbus.ru/authors/Fyodorova/Fyodorova_2.pdf (in Russian)
Rheological, structural and oil displacing properties of the solutions of polyacrylamide (PAA) and carboxymethylcellulose (CMC) are fully investigated in the conditions of abnormally low reservoir temperatures. Physico-chemical processes occurring at a contact of highly mineralized formation water with the polymer solutions of PAA and CMC, which are different in composition, in the pore space of the reservoir are studied. The possibility of increasing the efficiency of hydrodynamic influence on the reservoir in the conditions of the fields of the southwest Yakutia due to the use of displacing compounds on the water-soluble polymer base is established experimentally.
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05.05.08, K.K. Argunova, E.A. Bondarev, V.E. Nikolaev, I.I. Rozhin
DETERMINATION OF INTERVAL OF HYDRATE FORMATION IN WELLS DRILLED IN PERMAFROST ROCKS
http://www.ogbus.ru/authors/Argunova/Argunova_2.pdf (in Russian)
An approach to predictions of position and size of hydrate plugs inside tubes of gas wells has been proposed. It is based on the mathematical model of steady non-isothermal flow of real gas in tubes and on an algorithm of calculation of equilibrium conditions of hydrate formation for gas mixture content being given. Examples are given demonstrating applicability of the approach to analysis of actual situations.
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19.03.08, I.E. Ishemguzhin., A.R. Atnagulov., A.N. Zotov, E.I. Ishemguzhin
THE SPECIAL COMPLIANCE CRITERIA FOR A SMALL SAMPLE IN RELIABILITY EVALUATION OF THE OIL FIELD EQUIPMENT
http://www.ogbus.ru/authors/IshemguzhinIE/IshemguzhinIE_1.pdf (in Russian)
When evaluation reliability indexes of the submersible pump equipment for oil production, you have to interfere with little statistical information's content, which increases a probability of error. The special criteria, appropriate to defined distribution law of a random variable, are using for the small sample. As applied to the submersible pump equipment, several variants of small samples were calculate for the different prefailure life's distributions.
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13.03.08, A.I. Sivtzev
REASONS OF LOW EFFICIENCY OF THE TOLON-MASTAKHSKY GCF DEVELOPMENT
http://www.ogbus.ru/authors/Sivtzev/Sivtzev_1.pdf (in Russian)
The analysis of the development of the Tolon-Mastakhsky gas-condensate field revealed its low efficiency. The reasons of such low efficiency are high volumes of natural gas production from the reservoirs caused by the adoption of inadequate geological models, which brought about the overestimation of the initial resources of reservoirs.
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28.02.08, V.А. Budnik, N.G. Evdokimova, T.V. Pushkareva
EMULSIFICATION PROCESS FOR OIL BITUMEN IN WATER. SOME METHOD OF IT IMPROVEMENT
http://www.ogbus.ru/authors/Budnik/Budnik_4.pdf (in Russian)
This work is devoted to research of emulsification process for oil bitumen in water with difference methods. In this work the influence of emulsification process duration to reological properties of kation and anion emulsions was investigated. Also some modernization method for insisted kind of emulsification was examined. It was established that the mechanical method of bitumen emulsification in water has more advantages and some method of it improvement was proposed.
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11.02.08, R.Ya. Kuchumov, A.A. Sorokin
STUDY PERFORMANCE SYSTEM-SEAM WELLS
http://www.ogbus.ru/authors/Kuchumov/Kuchumov_1.pdf (in Russian)
A simulation of the gas production at a constant depression at the seams. We study changes over time average reservoir pressure, the annual selections, and the lessons of gas flow and the number of wells to provide a given level of the annual selection of gas from the reservoir. Submitted according depression changes to ensure continuous flow wells, as the accumulated selections, in different pronitsaemostyah and seam thickness.
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01.02.08, Adel M. Hemeida, and Ahmed Gawish
EVALUATION THE POTASSIUM BROMIDE AND ZINC BROMIDE BRINES FOR WORKOVER OPERATIONS
http://www.ogbus.ru/eng/authors/Hemeida/Hemeida_1.pdf
Clear brines are used extensively as workover fluids because of their low damage characteristics. This work was conducted to study the physical properties of potassium and zinc bromide brines and the compatibility of these brines with different API gravity Saudi crude oils and formation water. Also, the effect of temperature on brine viscosity was studied. It was found that true crystallization temperature for potassium and zinc bromide brines were (-14 C) and (-25 C), respectively. These brines were found incompatible with the tested Saudi crude oils where stable emulsions were formed but light crude oil (42 OAPI) was compatible with potassium bromide. Also, potassium bromide brine showed compatibility with formation water while zinc bromide was incompatible with formation water because of NaCl scale precipitation. The tested brines have shown non-Newtonian (dilatants) behavior and the viscosity of brines decrease with increase in temperature. Viscosity - temperature correlations were found for the tested brines with high accuracy.
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04.12.07, N.A. Nebogina, I.V. Prozorova, N.V. Yudina
THE STABILIZATION AND DEPOSIT FORMATION IN WATER-IN-OIL SYSTEMS
http://www.ogbus.ru/authors/Nebogina/Nebogina_1.pdf (in Russian)
The content and properties of water-oil emulsions of Festival minefield was investigated. The influence of hydrocarbon type content on formation and destabilization water-oil emulsions was investigated. The more effected method of destabilization emulsions was chosen by basis of obtained data. The deposit formation of the oil in temperature interval of oil flow from 30С to 70C was investigated. The more effective inhibitor of oil deposit was found.
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15.11.07, N.A. Petrov
APPLICATION OF COMPLEX REAGENT SNPH-PKD-515 IN OIL AND GAS PROCESSES
http://www.ogbus.ru/authors/SafarovAM/SafarovAM_3.pdf (in Russian)
In article is given a results of laboratory researches of reagent SNPH-PKD-515. Analysis has shown that it possible to apply reagent not only for modifying additive of solutions without a solid phase (polymeric washover solutions, liquids of perforation and killing), but also in clay and polymer-clay muds. Also is offered to use the reagent for processing acid solutions, and as anticorrosion paint for metal.
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10.09.07, G.R. Vahitova, A.M. Zimovets, M.F. Zakirov, V,Ya. Fedotov
ABOUT THE USE OF GAMMA RAY DATA FOR ESTIMATION OF WELL TECHNICAL CONDITION
http://www.ogbus.ru/authors/Vahitova/Vahitova_1.pdf (in Russian)
It is considered the possibility of the use of gamma ray data for the estimation of well technical condition. The results of theoretical calculations and interpretation of well log data are given.
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30.08.07, A.F. Fyodorova, E.Yu. Shits, A.S. Portnyagin
STUDY OF THE PROCESSES OCCURRING AT INTERACTION OF FORMATION WATER OF THE IRELYAKH GOF WITH THE HIGHLY MINERALIZED AGENT FOR RESERVOIR PRESSURE MAINTENANCE
http://www.ogbus.ru/eng/authors/Fyodorova/Fyodorova_1e.pdf (in English)
http://www.ogbus.ru/authors/Fyodorova/Fyodorova_1.pdf (in Russian)
The paper considers compatibility of formational water of the Irelyakh gas and oil field of the Republic of Sakha (Yakutia) with the highly mineralized solution used as an agent of reservoir pressure maintenance (RPM) with an allowance for factors, which influence solubility of salts, salt effect in particular. Also, possibility of concurrent reactions and specific conditions characteristic of the fields of the southwest Yakutia (by the example of the Irelyakh GOF) have been taken into account. It is shown that with the increase of the time length of wells' flooding with the liquid for RPM the pore space structure undergoes changes due to its calcination and sulphatization, which causes deterioration of reservoir properties and subsequently can complicate the operation of producing wells and the field in the whole.
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28.08.07, M.E. Semenov, L.P. Kalacheva, A.S. Shishkin
NATURAL GAS HYDRATE DISSOCIATION UNDER THE ACTION OF METHANOL AT ATMOSPHERIC PRESSURE
http://www.ogbus.ru/authors/SemenovME/SemenovME_1.pdf (in Russian)
It had been studied the dissociation reaction character of synthetic gas hydrates on the basis of natural gas from the Irelyakh gas and oil field by treating different volumes of methanol. The reaction order and velocities constants of hydrates dissociation were estimated.
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25.05.07, M.M. Kabirov, G.S. Li, H.N. Nguyen, Abd S. Kadduri
POSSIBLE WAYS OF IMPROVEMENT THE WORK OF GAS LIFT WELLS IN CONDITION OF INCREASING THE WATER CUT
http://www.ogbus.ru/authors/Kabirov/Kabirov_3.pdf (in Russian)
Article justified the use of flowing nipple disperse in specially designed to improve the structure of gas liquid mixture and reduce the loss of friction. The results of studies brought from working field condition in oil wells.
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24.05.07, A.G. Gavrilov, A.N. Mardanshin, M.N. Ovchinnikov, A.V. Shtanin
THE WELL NEIGHBOURHOOD TESTING BY HIGH FREQUENCY FILTRATIONAL WAVES METHOD
http://www.ogbus.ru/authors/Gavrilov/Gavrilov_1.pdf (in Russian)
The vertical wells investigations are shown by the harmonic filtrational pressure waves method for shot time periods with minutes and tens minutes. The conclusion is made about the actual by putting the depth and mouth devices to well porous neighbourhood conditions. The special features of the interpretation the similar experimental results is considered.
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22.05.07, M.M. Kabirov, H.N. Nguyen
EFFICIENCY OF GASLIFT APPLICATION IN OFFSHORE OIL FIELDS IN VIETNAM
http://www.ogbus.ru/authors/Kabirov/Kabirov_2.pdf (in Russian)
This article presents a brief analysis of gaslift application in offshore oil fields in Vietnam. It has been proved that, gaslift is an economical, effective and convenient method of oil production.
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18.05.07, M.M. Kabirov, G.S. Li, H.N. Nguyen, Abd S. Kadduri
FLOW NIPPLES DISPERSION FOR INCREASING EFFICIENCY OF GAS LIFT
http://www.ogbus.ru/authors/Kabirov/Kabirov_1.pdf (in Russian)
In gas lift wells for reduction specific gas flow rate possible to use the flow nipple dispersion installed in tubing production. In article presents method of optimum design construction and location beans of flow nipples dispersion.
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17.05.07, A.Sh. Ramazanov, V.M. Nagimov
ANALYTICAL MODEL FOR THE CALCULATION OF TEMPERATURE DISTRIBUTION IN THE OIL RESERVOIR DURING UNSTEADY FLUID INFLOW
http://www.ogbus.ru/eng/authors/Ramazanov/Ramazanov_2e.pdf (in English)
http://www.ogbus.ru/authors/Ramazanov/Ramazanov_2.pdf (in Russian)
This work represents an investigation of the temperature distribution caused by the barothermal effect during the single phase fluid inflow in the homogeneous oil porous reservoir to well with changing in time bottomhole pressure.
The mathematic model is developed, which is described the temperature changes in the reservoir with the pressure changing in time. It was made the comparison of calculation results with numerical solution.
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12.05.07, T.N. Yusupova, A.G. Romanov, E.E. Barskaya, Yu. M. Ganeeva, R.R. Ibatullin, I.N. Fayzullin, R.S. Khisamov
ESTIMATION OF POLYMER FLOODING EFFICIENCY BY VARIOTIONS IN OIL COMPOSITION ACCORDING TO OIL COMPOSITION CHAGES
http://www.ogbus.ru/authors/Yusupova/Yusupova_1.pdf (in Russian()
Oil samples before and after flooding by capsulated polymer gel have been investigated. Mechanisms of enhanced oil recovery as well as negative impact of crystalline waxes due to reservoir cooling on polymer flooding efficiency were discovered according to oil composition changes.
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28.04.07, A.P. Verevkin, I.D Eltsov, Y.I. Zozulya, O.V. Kiryushin
ADAPTIVE CONTROL SYSTEM DEVELOPMENT OF OIL PREPARATION PROCESS FOR OPTIMIZING TECHNICAL AND ECONOMIC PARAMETERS
http://www.ogbus.ru/eng/authors/Verevkin/Verevkin_1.pdf
The article is about the conception of carrying out the adaptive control system of oil preparation that provides the optimum realization of technological processes, including oil production, its transportation, division into stock-tank oil and commercial water and also the degassing. The parameters of the quality performance production (watered oil, oil content in commercial water and etc.) and the technical and economic parameters (technological cost price, profit, proceeds etc.) are serving as a criterion. The optimization of processes is offered to be provided on a gradient of the profit in space of varied technological parameters. The effect from apply of such control system is the increase of the technological profit up to dozens of times in percen
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23.04.07, A.N. Glazunov
THE PROBLEMS TO ORGANIZATIONS PRODUCTION AT BUILDING AND ACCOMPANIMENT GEOLOGY-HYDRADYNAMIC MODELS, COUNT SPARE AND DESIGNING THE DEVELOPMENT OIL AND GAS FIELDS
http://www.ogbus.ru/authors/Glazunov/Glazunov_1.pdf (in Russian)
In given work is analysed experience to organizations production at building and accompaniment geology-hydradynamic models, count spare and designing the development on their base in russian branch NIPI and engineering-consultation company, is revealled advantage and defect different approach, is designed row of the offers on improvement of the research-and-production process. It was analysed activity division and directions by number from 5 before 50 persons.
Data of the study gain special urgency for small russian design enterprise by reason of reinforcements of the influence upon market of oilservices foreign companies (Shlumberge, Roxar and others) and appearing trend to mergings and absorptions.
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17.04.07, S. Grekov, O. Kornienko, D. Mirzoev, R. Samsonov
PROCEDURE OF SELECTION OF OPTIMAL LAYOUT AND STRUCTURE OF SUB-SEA PRODUCTION UNITS
http://www.ogbus.ru/authors/Grekov/Grekov_3.pdf (in Russian)
This paper describes selection of optimal quantity, layout and structure of sub-sea production units for the specified reservoir engineering project (number and location of wells, well rates).
Algorithm and calculation procedure allows determining optimal well number in a sub-sea unit, number of sub-sea units and layout.
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09.03.07, S.A. Ermakov
FORECASTING OF TECHNOLOGICAL PARAMETERS OF OIL TREATING DEPENDING ON PROPERTIES OF PRODUCTION ACTING ON OIL TREAT-ING SYSTEM
http://www.ogbus.ru/authors/Ermakov/Ermakov_2.pdf (in Russian)
Results of experiences with the purpose of an estimation of influence of the asphaltenes content on a thermochemical sediment of a water-oil emulsion are brought. The method of a group account of arguments receives the mathematical model allowing to define the quantity of a dosed demulsifier depending on the asphaltenes content change in an oil mix. Relation between the asphaltenes density and content is established.
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07.03.07, S.A. Ermakov, A.A. Mordvinov
ABOUT INFLUENCE OF ASPHALTENES ON WATER-OIL EMULSIONS' STABILITY
http://www.ogbus.ru/authors/Ermakov/Ermakov_1.pdf (in Russian)
Attempt to generalize the data published by various authors about the influence of oils' structures on the efficiency of their trade preparation is made. Essential influence of asphaltenes on the stability of oil emulsions is marked.
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27.02.07, N.A. Petrov, L.A. Alekseev
THE IMPROVEMENT CONCEPT OF QUALITY FINISHING AND REBUILDING OF OIL-AND-GAS WELL
http://www.ogbus.ru/authors/PetrovNA/PetrovNA_11.pdf (in Russian)
For increase efficiency of technologies on restriction of water-inflows it is necessary comprehensive consider and distinguish mechanism of occurrence overflows stratum fluids in each case. Stand and field researches have shown, that besides known ways of an origin of overflows through a cement stone and backlashes in contact zones "casing column - cement coil - claypan - rock" ways are possible still: through again formed during processings faces zones of a crack and the washed out channels (arisen even at hydrobreak of layers) in rock and not tight carving connections casing columns.
In technology of repair-insulation work it is expedient to provide a complex of a spadework on clearing: faces zones from deposits and channels surface from hydrocarbons.
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18.12.06, V.A. Sokolov, Y.G. Burakov
SIMULATION DYNAMICAL MODEL OF CYCLIC GAS-LIFT UNIT OPERATION IN FLOODED GAS WELL
http://www.ogbus.ru/authors/SokolovVA/SokolovVA_2.pdf (in Russian)
A new approach to design simulation dynamical model of cyclic gas-lift unit operation in flooded gas well on forced-oscillations regime has been developed. It gives the opportunity to simulate individual parameter-time characteristic of its operating mode as well as their correlation. The simulation dynamical model of the concerned regime is written as 5 nonlinear ordinary differential equations system. The property that define this system is that each of the equation can be solved separately, with its own input parameter.
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13.12.06, R.K. Khismatullin
THE DYNAMICS OF THE DEFLECTED MODE OF THE ROCK AT DIFFERENT TYPES OF SATURATION
http://www.ogbus.ru/authors/Khismatullin/Khismatullin_1.pdf (in Russian)
The experimental plant and the software for the investigation of mode of the rock deformation are described. The experimental results of the research are enumerated. The theme of this research is the following: oil and water saturation for the stress relaxation in centre marks if the ends loads are applied to them.
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07.11.06, R.G. Ahiyarov, D.A. Gogolev, A.B. Laptev., D.E. Bugay
INCREASE OF DEMULSIFICATION EFFICIENCY OF OIL-IN-WATER EMULSIONS BY MEANS OF THEIR MAGNETOHYDRODYNAMIC TREATMENT
http://www.ogbus.ru/authors/Ahiyarov/Ahiyarov_1.pdf (in Russian)
It is proved there is the opportunity of magnetohydrodynamic treatment of demulsifiers in the internal area of pipe with the purpose of demulsification process efficiency increase for oil-in-water emulsions. The description of processing principle of the pilot device for magnetohydrodynamic treatment and the results of its bench tests in natural conditions are discussed. It is shown that magnetohydrodynamic treatment of water-oil environments with demulsifiers provides the increase of water separation on about 9-16 percent.
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05.09.06, J. Shaikhymezhdenov
RESEARCH ON SURFACE ACTIVITY OF RBR PAG REAGENT IN DISPERSION SYSTEMS
http://www.ogbus.ru/authors/Shaikhymezhdenov/Shaikhymezhdenov_1.pdf (in Russian)
This paper discusses the study of the surface activity of RBR PAG reagent in dispersion systems. The findings prove that RBR PAG reagent possesses high surface activity, which remains even if there are electrolytes of polyvalent metals in the systems.
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10.04.06, A.Sh. Ramazanov, A.V. Parshin
TEMPERATURE DISTRIBUTION IN OIL- AND WATER-SATURATED RESERVIOR WITH ACCOUNT OF OIL DEGASSING
http://www.ogbus.ru/eng/authors/Ramazanov/Ramazanov_1e.pdf (in English)
http://www.ogbus.ru/authors/Ramazanov/Ramazanov_1.pdf (in Russian)
In this work an analytical model is discussed. It describes unsteady temperature distribution in oil-water saturated reservoir during combined inflow of produced water and gas-cut oil below bubble-point pressure to the wellbore. An analysis of the model is performed, the calculation results are presented.
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26.04.06, M.M. Agliullin, V.M. Abdullin, M.M. Abdullin, S.A. Kurmayev, Yu.N. Kusakin
COMPLEX THERMOBAROCHEMICAL TREATMENT OF THE BOTTOM-HOLE ZONE
http://www.ogbus.ru/authors/Agliullin/Agliullin_2.pdf (in Russian)
The paper describes complex thermobarochemical treatment method (TBCT) applied to bottom-hole zones. The method is based on the use of solid rocket fuels, and the authors consider its application regarding for geological and technical safety of works and the geological effectiveness - the two factors to some extent contradicting each other.
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04.03.06, R.Sh. Salavatova
ANALYSIS OF PRODUCTION FACILITIES INTERACTION CHARACTERISTICS DURING DEVELOPMENT OF MULTILAYER FIELDS
http://www.ogbus.ru/authors/Salavatova/Salavatova_1.pdf (in Russian)
During the development of multilayer fields one of the basic ways to analysis the process of oil and gas production is the examination of production facilities as a whole.
The conducted analysis of the technological characteristics of the "Gum-deniz" (Azerbaijan) field's development on the base of the rang and multiple correlations, and also on the estimation of the fluid recovery rate dynamics by using the exponential model made it possible to reveal the existence of production facilities interaction characteristics.
On the base of the conducted research was determined the opportunity to combine the whole line of horizons into a single production facility .this gives us the opportunity to estimate the prognosis values of hydrocarbons' extractive volumes.
This approach gives us the opportunity to carry out the procedures of the long-term forecasting more soundly and make decisions on the changing strategy and development tactics, taking into account the dynamics of the concerned production facilities' interaction. This allows us to increase the effectiveness of the multilayer fields' development.
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09.12.05, A.I. Ponomarev , Ju.V. Kalinovskiy, R.S. Suleymanov, G.A. Lanchakov, T.G. Berdin
FIELD HYDRODYNAMICAL TESTING OF GAS CONDENSATE WATERING WELLS
http://www.ogbus.ru/eng/authors/Ponomarev/Ponomarev_1.pdf
The watering out of gas-condensate wells on Urengoi field at existing cluster well production gathering system can become the strong negative factor lowering performance of gas and condensate recovery. At the first stage creation of method of calculation of the well behavior in these conditions conducting complex hydrodynamic and gas condensate tests of several gas condensate wells with adjustable feeding water-methanol mixture into the well bottom was required. For the adequate description of a multiphase flow moving with the help of the Peng-Robinson equation the method of calculation interaction coefficients of the basic gas condensate system components at the presence of water and methanol is advanced.
On the basis of treating outcomes of such tests held on several gas-condensate wells, the updated dependences for calculation true gas-content of a multiphase upward flow in vertical tubes are obtained at a dispersion-ring-type regime of stream. Using these dependences allows to calculate values of bottom hole pressure on measured well head pressure with satisfactory for practice by accuracy.
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23.11.05, Yu. Zeigman, A. Kolonskikh
OPTIMIZATION OF CENTRIFUGAL OIL-WELL PUMP OPERATION FOR A DEVIATION PREVENT
http://www.ogbus.ru/authors/Zeigman/Zeigman_1.pdf (in Russian)
The performance optimization of system a stratum–well-pump - is the basic difficulty of well operation. The decision of this problem is a multialternative task. It is necessary to watch mode operations of system constantly, because the system is dynamic. The reservoir properties of bottom-hole formation zone vary constantly in an operating time. The particular attention should be given on change of reservoir properties during treating bottom-hole. If the process is not observed, there can be various complications in the exploitation of well. It can be expressed especially strong in the using of electric centrifugal pumps.
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19.11.05, Bikbulatov S.M., Pashali A.A.
THE ANALYSIS AND CHOISE OF METHODS FOR CALCULATION OF PRESSURE GRADIENT IN THE WELLBORE.
http://www.ogbus.ru/authors/Bikbulatov/Bikbulatov_1.pdf (in Russian)
This work contains the analysis of existing common methods for calculation of multiphase flow parameters in wells. Described of different methods and considered their classification. Restrictions and area of their application examined, made recommendations for their use.
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28.03.05, A. Gazizov, R. Hananov, A. Gazizov, Fang Feng, M. Kabirov
METHOD FOR WELL PRODUCTIVITY INCREASE AND WATER PERCENTAGE DECREASE IN PRODUCED FLUID BY ROCK HYDROPHOBIZATION OF BOTTOM-HOLE ZONE
http://www.ogbus.ru/authors/Gazizov/Gazizov_1.pdf (in Russian)
The results of laboratory and field tests on selection of composition of chemical reagents with complex influence (RMD) to bottom-hole zone have been described. Obtained results can increase well productivity, decrease water percentage in the produced fluid and clean rock pore from paraffin deposit. Propositional oil wetting composition consists of two components - hydrocarbon solvent and hydrophober. The volume ratio is chosen on the basis of concrete geological-and-physical conditions of producing well.
Technologies for treatment of bottom-hole zone with composition RMD have been tested in the oilfields of Oil Producing Company "Bavlineft", which showed technological and economic effectiveness.
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11.03.05, A.I. Maltsev
THE REASON OF THE ORIGIN OF "THE STARTING EFFECTS" DURING THE REALIZATION OF STANDARD GAS DYNAMIC RESEARCHES AT KOMSOMOLSKY GAS FIELD
http://www.ogbus.ru/authors/Maltsev/Maltsev_1.pdf (in Russian)
There is considered the problem on the effect of the man-caused causes on the results of standard gas-dynamic researches. The problem appears under the following circumstances: 1) using of modern high-precision equipment; 2) existence of clustered technological series of gaseous bores; 3) using of computer processing of research results. “The starting effects” action most obviously emerges when recording the LPS (line of pressure stabilization).
The influence of “the starting effect” during the carrying out gas-dynamic researches should remove in the following way: equipping the torch line end of the gaseous well cluster by electric valve gate in an explosion-proof view with remote control; inserting the corresponding amendments into the regulation on realization GDR (gas dynamic researches); carrying out everywhere the substitution of the standard computer processing of research results of GDR by their detailed complex analysis.
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14.02.05, S.M. Sultanmagomedov
DURABILITY INCREASE OF FIELD PIPELINES SUBJECTED TO GROOVING CORROSION
http://www.ogbus.com/eng/authors/Sultanmagomedov/Sultanmagomedov_2.pdf
Is established, that one of the basic reasons causing failure of field pipelines, is the corrosion wear on the bottom generatrix of the internal surface of a pipe as a groove. Is marked, that the increase of the durability is reached as a result of preventive repair. Offered is one of the methods of field pipelines with grooving corrosion life increase.
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08.12.04, M.M. Agliullin, V.M. Abdullin, M.M. Abdullin, S.A. Kurmaev
THERMOBAROCHEMICAL METHOD FOR ENHANCEMENT OF OIL AND GAS WELL PRODUCTIVITY
http://www.ogbus.ru/authors/Agliullin/Agliullin_1.pdf (in Russian)
Technologies discussed in the paper are featured by the use of powder (solid fuel) charges, which do not damage the well bottom.
Charge burning in this case is delayed (up to half hour), and it affects the bottom-hole formation zone most effectively.
Thermobarochemical treatment technologies combine three methods of well treatment thermal-gas-chemical treatment using powder charges, chemical treatment, and hydropulse and depressing action using various implosive devices.
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02.12.04, E.V. Rabkina
FACTORS CAUSED OIL SPILLS ON THE OFFSHORE FIELDS CONSTRUCTION OBJECTS
http://www.ogbus.ru/authors/Rabkina/Rabkina_1.pdf (in Russian)
Factors, arising emergency (oil spills) on the offshore fields construction objects are reviewed in the article, categories and grades of emergency are represented as well. Dangers of the basic and auxiliary technological processes are considered.
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03.03.04, F.A. Agzamov, N.Kh. Karimov, D.V. Morozov, N.A. Nogaev, M.A. Shotai, A.F. Devyatko.
PECULIARITIES OF WELL CASING AND CEMENTING IN AMANGELDY GAS FIELD, THE REPUBLIC OF KAZAKHSTAN
http://www.ogbus.ru/authors/Morozov/Morozov_1.pdf (in russian)
An integrated solution of the tubing-casing annulus pressures problem in Amangeldy Gas Field has been demonstrated. Plugging-back and viscoelastic system formulations have been substantiated experimentally. Experimental investigation results have been given.
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23.10.03, Takacs G.
POWER EFFICIENCY OF SUCKER-ROD PUMPING
http://www.ogbus.com/eng/authors/Takacs/Takacs_1.pdf
The paper investigates the power conditions of sucker-rod pumped installations.
After a detailed evuluation of the possible energy losses, a three-therm formula is proposed in which the most important term is lifting efficiency that describes the downhole energy losses in the rod-pumped well.
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16.06.03, Mukminov I.
FLOODING IN THE DEVELOPMENT SYSTEM WITH SQUARE HEAD-ON LOCATION OF VERTICAL INJECTION AND HORIZONTAL PRODUCTION WELLS
http://www.ogbus.com/eng/authors/Mukminov/Mukminov_2.pdf
The influence of horizontal well systems and spacing upon productivity and upon current and ultimate oil recovery can be very significant. However, this question is hardly covered in the literature.
The obtained analytical solutions show that the breakthrough time of the injected fluid weakly depends upon the length of the horizontal wellbore; the increase in horizontal well length by more than 50 % of the distance between the wells will not considerably influence well productivity and water-free oil recovery.
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15.05.03, Khasanov M., Yamaliev V., Ishemguzhin Y., Imaeva E.
ANALYSIS OF OIL FIELD EQUIPMENT CONDITION IN THE PROCESS OF EXPLOITATION
http://www.ogbus.com/eng/authors/Khasanov/Khasanov_1.pdf
It's exhibited, that at analysis of oil field equipment condition in the process of exploitation can find applications analysis of entropy modification and coefficient Jinny, widely used in other areas. The examples illustrating feasibilities of the offered method with values can be accepted as standard for analyzed objects of control at Samotlor field, that be specially valuable at problem solving of identification of a status.
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11.12.2001, Ga'bor Taka'cs
WAYS TO DECREASE PRODUCTION COSTS FOR SUCKER-ROD PUMPING
http://www.ogbus.com/eng/authors/Takacs/waystodecrease.pdf
Mainly due to its long history, sucker-rod pumping is a very popular means of artificial lift all over the world, roughly two-thirds of the producing oil wells are on this type of lift. To maximize profits from these wells in the ever-changing economic situation with rising costs of electric power, installation designs must ensure optimum conditions.
In the paper, basic considerations on ensuring profitable rod pumping operations are given. The key topics of installation design (pumping mode selection, optimum counterbalance, rod string design) are addressed and their role in the improvement of sucker- rod pumping operations and the reduction of lifting costs is discussed. After a review of the surface and downhole energy losses in sucker-rod pumped wells, some key considerations on the ways to improve system efficiency are given. The most important task is the proper selection of the pumping mode, i.e. the combination of plunger size, pumping speed, stroke length, and rod taper design for lifting the prescribed amount of liquid to the surface. The best pumping mode maximizes the lifting efficiency and, at the same time, reduces prime mover power requirements and electrical costs. The operational efficiency of the surface equipment is improved by using an optimum counterbalancing of the pumping unit. To achieve an ideal sucker-rod pumping system the mechanical design of the tapered rod string must be properly made.
The paper gives aspects and details of installation design improvements along with practical examples.
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11.12.2001, Ga'bor Taka'cs
USE OF CONVENTIONAL DYNAMOMETER CARDSIN THE ANALYSIS OF SUCKER-ROD PUMPED INSTALLATIONS
http://www.ogbus.com/eng/authors/Takacs/useofc.pdf
A conventional dynamometer (the most common type of measuring device in rod pumping well analy-sis) records polished rod loads versus rod displace-ment during the pumping cycle on a plot called dynamometer card. Calculations requiring rod loads and displacements as input variables must rely on information retrieved from these cards. There are many conditions that prevent the pumping analyst from getting the right type and the desired amount of reliable measurement data from dynamometer cards. These include: (a) the card's small physical size, (b) visual reading of the card can be insufficient, and (c) additional information not readily available from the card may also be needed.
The goal set forth in this paper is to present a novel technique for processing conventional dynamometer cards. The calculation method and the computer program developed for this purpose: (a) uses a simple computer configuration, (b) involves a simple, easy-to-learn procedure, (c) ensures the required accuracy, and (d) allows the retrieval of special information from the card that cannot be reached with other methods.
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11.12.2001, M.A. Tokarev, R.G. Islamov, G.A. Shamaev, A.N. Chervyakova, V.B. Smirnov, K.H. Ginullin, M.M. Tazie
SELECTIVE CONTROL OF FIELD DEVELOPMENT INTENSIFICATION
http://www.ogbus.com/eng/authors/Tokarev/selectivecontrol.pdf
Additional downloads: Figure 1, Figure 2, Table.
The state of the art of development of the majority of oil-fields of Russia is characterized by growth of almost unrecoverable of residual reserves in headers of a composite constitution at a high water cutting of well production. The raise of performance of digging with almost unrecoverable reserves requires special scientific studies.
We esteem a system of selective control of intensification of process of development including hierarchical approach to learning a plant, statistical simulation of processes of development on various instants, estimation of potential possibilities of a plant on efficiency and blow- down recovery, optimization of methods of a bottom-hole zone treatment and a plant as a whole with the purpose of meliorating performance oil recovery and new methods of check by the dynamics of oil saturation of a bench during development. All this allows to forecast and to drive the process of development.
The methodology, considered by us, is resulted on an example of large oil producing region encompassing northwest of Bashkortostan.
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11.12.2001, V. Vasiliev, A. Gazizov, N. Ibragimov, Z. Habibullin
THE EFFECTIVE GASEOUS TECHNOLOGIES OF RECOVERY INCREASEMENT
http://www.ogbus.com/eng/authors/Vasiljev/effective.pdf
To the present the wide experience gas usage for well stimulation of oil and increasement of recovery is enough accumulated. The methods of gas-oil displacement have found the broad applying for the fields of massive type with a fissured carbonaceous reservoir. It is world-known that for these fields the most effective way of exploitation – is the gas drive regime. So, the statistical researches of application the gas drive regime in USA have shown that the success factor has reached 75%. The discovery of large numbers of reef reservoirs in Canada has given the great push to development and implementation methods of gas-oil displacement.
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