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| Field development. Production |
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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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 Karañhàganak.
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.À. 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 30Ñ 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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