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| Applied Research |
25.11.09, L.N. Latyshev, Zh.A. Dayev
FLOW MEASURMENT SYSTEM OF GAS EXCEPTING INFLUENCE OF RATE OF EXPIRATION
http://www.ogbus.ru/authors/Latyshev/Latyshev_2.pdf (in Russian)
This paper shows the flow measurement system of gas without rate of expiration. The measurement system is built with using of elements of the theory of invariance in measurement devices and elements of the theory of partial flow meters.
Keywords: gas, flowmeter, pressure difference, measurement, system, theory of invariance
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27.10.09, G.I. Jalalov, N.B. Agaeyv, E.V. Gorhkova
ABOUT THE RESEARCHES OF CONDITIONS WHICH LIMIT THE MOBILITY OF THE GAZ-OIL CONTACT IN DEFORMED FORMATION
http://www.ogbus.ru/authors/Jalalov/Jalalov_1.pdf (in Russian)
In this article based on the numerical modeling were studied the conditions of the gaz-oil contact in a single deformed formation with anisotropic in permeability at introduce of oil wells into operation. There were showed also the distinctive properties of this process.
Keywords: anisotropy, deformation, formation, permeability, modeling, gaz-oil contact, viscosity, pressure, filtration.
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20.10.09, Zh. A. Dayev, Zh.A. Latyshev
APPLICATION OF EXTENDING DEVICES AS SENSITIVE ELEMENTS FOR FLOWMETER OF VARIABLE DIFFERENTIAL PRESSURE
http://www.ogbus.ru/authors/Daev/Daev_1.pdf (in Russian)
This paper shows applications of hydraulic local resistances in flow measuring systems, disadvantages of orifice plates and it shows how can be applied extending devices as sensitive elements for flow measurement. The paper describes theoretical basics of method.
Keywords: gas, flow, differential pressure, measurement, sensitive (detector) element, extending device, theory, recommendation
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26.08.09, Magomed Veliyev
THE HYDRODYNAMIC PROBLEM OF FLUID INFLUX TO HORIZONTAL AND TO BRANCHED HORIZONTALLY WELLS IN AREA
http://www.ogbus.ru/authors/Veliyev/Veliyev_2.pdf (in Russian)
Produced article is devoted the solution of a hydrodynamic problem of fluid influx to horizontal (HW) and to horizontally branched wells (BHW).
The task in view dares a method designed by the author taking into account anisotropy's a payment. The reviewed hydrodynamic problem of fluid influx to one (HW), is generalized on case BHW with any number of horizontal trunks. Special cases when in a bench are maintained BHW with two and three horizontal trunks are reviewed. For case BHW with three horizontal trunks at various values of their lengths, taking into account anisotropy's of a bench calculi are effected and learnt influencing locus of trunks after the relation of top of oil horizon or a base surface, and also anisotropy's of a bench on a well productivity.
The deduction that the bench anisotropic effect on a well productivity is more essential, than a layout of trunks - of horizontal holes after the relation of top of oil horizon or a base surface is drawn.
Keywords: borehole, layer, liquid, oil, development, formula, pressure, debet, consuption, permeability, function, influx, filtering, horizontal, branched
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14.08.09, N.E. Struppul, E.A. Sigida, N.N. Trofimenko, E.R. Colomeetch, N.A. Snopkova, A.A. Dvornik
PETROLEUM BIODEGRADATION IN PRESENT OF MARINE MICROORGANISMS Pseudoalteromonas citrea, Pseudoalteromonas elyakovii and Oceanisphaera litoralis
http://www.ogbus.ru/authors/Struppul/Struppul_1.pdf (in Russian)
Tentative experiments showed that Pseudoalteromonas citrea, Pseudoalteromonas elyakovii and Oceanisphaera litoralis can utilize petroleum hydrocarbons pollution of seawater. All researched microorganisms are capable for degradation of some petroleum products: ligroin, benzene, kerosene etc. Our research of the dynamics of petroleum products biodegradation in present of these microorganisms (residual fractions of oil, diesel, and gasoline) showed that intermediate degradation stage is aromatic hydrocarbons formation. Dynamics of biodegradation of gasoline pollution in synthetic seawater by these microorganisms was determined by static vapor-phase analysis with subsequent gas chromatographic separation. Degradation of gasoline in 20 days is approximately 80 %. That indicate that these microorganisms could be used to oil hydrocarbons reduction in water. Pseudoalteromonas citrea had the greatest utilizing ability, with an average destruction level of 90.6 %.
Keywords: marine bacterium, petroleum biodegradation, oil
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31.07.09 N.P. Starostin, M.P. Egorova, A.I. Gerasimov
TEMPERATURE REGIME IN THE ELECTROCOUPLING WELDING OF POLYETHYLENE PIPES FOR GAS PIPELINES
http://www.ogbus.ru/authors/Starostin/Starostin_3.pdf (in Russian)
In the mathematical model of the thermal process at welding of polyethylene pipes for gas pipelines proposed to take into account the course of the phase transition in the range of temperatures. Comparison of theoretical and empirical temperature dependences on the time shows the efficiency of this approach for determining the dynamics of the temperature field in the weld.
Keywords: welding, a phase transition, polyethylene, temperature range, melting, crystallization, coupling, Stefan problem, smoothing of coefficients.
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17.07.09, A.A. Okhlopkova, P.N. Petrova, O.V. Gogoleva
WORKING OUT POLYMERIC NANOCOMPOSITES THE TRIBOTECHNICAL APPOINTMENTS FOR THE OIL AND GAS EQUIPMENT
http://www.ogbus.ru/eng/authors/Okhlopkova/Okhlopkova_1e.pdf (in English)
http://www.ogbus.ru/authors/Okhlopkova/Okhlopkova_1.pdf (in Russian)
In the given work perspectives of combined modification of polytetrafluorethylene (PTFE) by fluoroplastic F-4MB in a combination with nanospinel magnesium for the purpose of reception of new cold-resistant polymeric composite materials the tribotechnical appointments with improved deformation-strength characteristics for the oil and gas equipment is shown.
Keywords: polytetrafluorethylene, a copolymer, nanofillers, structure, wear resistance, friction factor, a friction surface
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24.05.09, N.I. Mironyuk, V.V. Zolnikov, B.S. Zhirnov, K.N. Novoderzhkina, E.A. Pryanikova
EXPERIMENTAL RESEARCHES OF AQUEOUS HIGHLY CONCENTRATED MULTICOMPONENT SALT SOLUTIONS TREATMENT METHODS
http://www.ogbus.ru/eng/authors/Mironyuk/Mironyuk_1.pdf
It is spoken about features of aqueous highly concentrated multicomponent salt solutions treatment methods. It is also advised a complex technology of treatment such kind of solutions.
Keywords: methods of aqueous highly concentrated multicomponent salt solutions treatment, crystallization, atmospheric distillation, vacuum distillation, acid neutralization
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18.05.09, A.I. Gerasimov
REINFORCEMENT OF CARRYING ABILITY OF ICE FERRIES AND MARSHY ROADS
http://www.ogbus.ru/authors/Gerasimov/Gerasimov_1.pdf (in Russian)
Development of stocks of hydrocarbon raw material and investigation of their site today moves ahead more and more on northern territories of Russia, where there is no developed high system. The technics of oil-and-gas branch and transport on its delivery becomes more powerful, increasing in weight. At the time global changes in a climate remove in later terms of becoming of safe carrying ability of ice ferries and marshy roads. All this dictates development of the ways reinforcement of carrying ability of ice ferries and marshland.
Keywords: the heavy technics, ice ferries, carrier ability, transportation of the cargo, shaping of ice, freezing, marshland, flooring
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30.04.09, V.A. Tabarin, S.D. Demjantzeva
DETERMINING OF COUPLED WATER IN SAMPLES ROCKS AT MICROWAVE FREQUENCIES
http://www.ogbus.ru/authors/Tabarin/Tabarin_1.pdf (in Russian)
This paper describes the first results of our laboratory investigation of the formation constitutient (rock matrix and borehoule fluids) and the composite formation. The electromagnetic propagation tool has demonstrated that the dielectric permittivity of rocks at microwave frequencies. This investigation are helpful in determining the properties of the rocks and the fluids contain, especially coupled water. Electrical parameters of rocks with fluids are found generally complex. A technique has been developed for measuring the complex dielectric ptrmittivity over a microwave frequency bands (8.15 to 12 GHz). Measurements on bulk water of various salinities demonstrate the salinity dependence of the dielectric constant () of water at high salinities. The measured a dielectric loss () shows little dispersion and is in good agreement with measured low-frequency values by other investigators. All measurements are made with samples of different porosity (3 to 24%) and saturated porous water (88.9 to 32.6%). Error of measurements 10% be achieved.
Keywords: rock, coupled water, complex dielectric permittivity, microwave frequencies, quasi-optical measurement
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28.04.09, Nikolay P. Starostin, Alexander I. Gerasimov
WELDING OF THE POLYMER PIPES FOR GAS MAIN UNDER LOW TEMPERATURE
http://www.ogbus.ru/authors/Starostin/Starostin_2.pdf (in Russian)
Based on features of thermophysical properties of polymerical materials, method of welding of polyethylene pipes for gas pipelines are offered, allowing to conduct welding without construction of temporary coverture at the low temperature of atmospheric air.
Keywords: welding, heated instrument, gas main, polyethylene, temperature, way, heating, cooling, camera
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16.01.09, Mohsin Al-Jarba, Bandar Duraya Al-Anazi
A COMPARISON STUDY OF THE OF THE CO2-OIL PHYSICAL PROPERTIES LITERATURE CORRELATIONS ACCURACY USING VISUAL BASIC MODELLING TECHNIQUE
http://www.ogbus.ru/eng/authors/Al-Jarba/Al-Jarba_1.pdf
A key parameter in a CO2 flooding process is the gas solubility as it contributes to oil viscosity reduction and oil swelling, which together, in turn, enhance the oil mobility and oil relative permeability. Often injected gas-oil mixture physical properties parameters are established through time-consuming experimental means or using correlations available in the literature. However, one must recognise that such correlations for predicting the injected CO2-oil physical properties are valid usually for certain data ranges or site-specific conditions.
In this paper, a comparison has been presented between the literature correlations for CO2-oil physical properties using excel spreadsheet and also using Visual Basic soft ware. Emera and Sarma (2006) correlations have yielded more accurate predictions with lower errors than the other tested models for all the tested physical properties (CO2 solubility, oil swelling due to CO2, CO2-oil density, and CO2-oil viscosity). Furthermore, unlike the literature models, which were applicable to only limited data ranges and conditions, Emera and Sarma models could be applied over a wider range and conditions.
The developed Visual Basic software can be used to test which correlation presents the best accuracy between a list of different literature correlations for CO2-oil physical properties and then once the best correlation has been selected, the user can go to this correlation and use it in predicting the property (CO2 solubility, oil swelling due to CO2, CO2-oil density, and CO2-oil viscosity) when no experimental data are not available.
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07.11.08, A.S. Galeev, N.I. Mindiyarova
THE APPLICATION OF THE ULTRASONIC FIELD FOR INCREASING THREADED GOINT SERVICE LIFE
http://www.ogbus.ru/authors/GaleevAS/GaleevAS_1.pdf (in Russian)
The article considers the results of the experimental investigations of the effects jf the ultrasonic field on the process of the tubing screwing up - unscrewing. The influence of the ultrasovic field on the friction forces in the process of scewing up - unscrewing has been determined. The linear temperature elevation of the threaded connection in the process of screwing up - unscrewing has been determined in so doing temperature elevation rate is twice less in case of oscillations superimposition then without ultrasonic oscillations.
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15.07.08, R.V. Romashin
MATHEMATICAL MODEL OF THE FULL-TURN ACTUATOR FOR BALL VALVES
http://www.ogbus.ru/authors/Romashin/Romashin_2.pdf (in Russian)
The mathematical model of the new actuator for valves is offered. Initial parameters and algorithm of calculation of mathematical model are reduced. Graphs of change of some parameters of the actuator are presented. It is established, that at sampling the actuator in the capacity of principal parameter to accept steel intensity of the drive more favourably. Comparative gabarits of the new actuator and the actuator of model MT255-2/200-S-GH of Ledeen Corporation is shown.
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11.07.08, R.V. Romashin
FULL-TURN ACTUATOR FOR BALL VALVES
http://www.ogbus.ru/authors/Romashin/Romashin_1.pdf (in Russian)
Features of existing actuators of ball valves are considered. Prominent features scotch yoke mechanism is resulted. The actuator of firm ActraCam with the mechanism replacing scotch yoke, and providing turn on 90 is shown. The new actuator providing turn on 360 is submitted.
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04.07.08, I.N. Frolov, T.N. Yusupova, Yu.M. Ganeeva, E.E.Barskaya, G.V. Romanov
THE PHYSICAL-CHEMICAL PECULIARITIES OF OLEFINE THERMOELASTOPLAST-MODIFIED BITUMENS
http://www.ogbus.ru/authors/Frolov/Frolov_1.pdf (in Russian)
The comparative analysis of both chemical composition and physical-mechanical properties of 90/130 penetration-grade bitumens derived from the Tatarstan (Romashkinskoe oil field) (A) and Kazakhstan (B) oils was performed. The difference in disperse structure was found. Differential scanning calorimeter was used to investigate the phase constitution of bitumens and composition on their basis. The modification effect was found to be reduced to enhancing the intrinsic colloid structure of bitumen and may be discussed in terms of thermodynamics of phase formation of polymer solutions. It is shown that hydro isolation material on the basis of B bitumen with gel-type structure possesses better service performance as compared with that on the basis of A bitumen with sol-type structure.
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02.07.08, Ahmed Gawish, Emad Al-Homadhi
RELATIVE PERMEABILITY CURVES FOR HIGH PRESSURE, HIGH TEMPERATURE RESERVOIR CONDITIONS
http://www.ogbus.ru/eng/authors/Gawish/Gawish_1.pdf
The Objective of this paper is to clearly investigate the effect of some factors on oil-water relative permeability curves under certain reservoir pressure and temperature. In literature, the effect of different factors on relative permeability of oil-water systems have been studied under ambient room conditions. However, treatments studies dealing with the effect of factores under reservoir conditions are few. Therefore, in this study, wettability alterations, brine chemistry, clay content, and their impacts on relative permeability curves under particular reservoir pressure and temperature were studied. Pore pressure, pore pressure drawdown and their combined effect with overburden stress and brine chemistry on relative permeability curves were also investigated at reservoir conditions. The relative permeability was calculated using JBN method.
In conclusions, the change of wettability from water wet to mixed wet gives relatively higher relative permeability to oil at high and medium oil saturation in the core samples. But at low oil saturation the relative permeability to oil becomes lower in mixed wet than in water wet.
At reservoir temperature, the oil relative permeability increases at all oil saturations compare with room conditions. This effect may be not due to the change in wettability but due to the change in viscosity ratio.
The effect of clay content on all permeability types (absolute, effective, relative permeability, relative permeability ratio, and fractional water flow) was bad due its damaging effect.
The increase of net overburden pressure cause decrease in the relative permeability of oil, however, its effect on relative permeability of water was negligible
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11.06.08, A. Atnagulov, I. Ishemguzhin, A. Zotov, E. Ishemguzhin
BAYES METHOD APPLICATION AT THE ESTIMATION OF PROBABILITY "FLIGHT" SUBMERSIBLE DRIVE PUMP UNIT ON THE BOTTOM HOLE
http://www.ogbus.ru/authors/Atnagulov/Atnagulov_1.pdf (in Russian)
At operation of hole by electrocentrifugal pump installations on pump plant the various factors leading failures of type operate "flight" (partition and breakage submersible the equipment on the bottom hole) which account will allow with sufficient accuracy to estimate a technical condition of the unit. Authors offer to use Bayes method applied in the theory of reliability, allowing to consider conditions of operation and most authentically to judge reliability of the pump equipment.
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09.06.08, L.A. Kovaleva, R.Z. Minnigalimov, R.R. Zinnatullin
ABOUT THE EFFICIENCY OF OIL SLIMES UTILIZATION BY THE RADIO-FREQUENCY ELECTROMAGNETIC FIELD
http://www.ogbus.ru/authors/Kovaleva/Kovaleva_1.pdf (in Russian)
The problem of oil slimes utilization is considered. The results of experimental researches of the dielectric characteristics of oil slimes samples under electromagnetic influence are given. The oil slimes destruction efficiency was also estimated.
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02.06.08, D.V. Dolgov
INFLUENCE OF THE DISTANCE BETWEEN A NOZZLE AND A MIXING CHAMBER ON THE LIQUID-GAS EJECTOR EFFICIENCY
http://www.ogbus.ru/authors/Dolgov/Dolgov_1.pdf (in Russian)
The influence of the distance between a nozzle and a mixing chamber on the liquid-gas ejector efficiency is experimentally studied and described in this paper. The liquid-gas ejectors are used to utilize associated gas. The experiments conducted on the laboratory bench made it possible to estimate the optimal distance between a nozzle and a mixing chamber. The maximum value of the isothermal efficiency was recorded when the ratio of the distance between a nozzle and a mixing chamber to the diameter of a mixing chamber ranged from 3.4 to 3.7. This optimum ratio does not depend on the ejector operating conditions nor on the operating pressure in a nozzle. This ratio value is recommended for the design of liquid-gas ejectors.
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30.04.08, K.K. Argunova, E.A. Bondarev, V.V. Popov, I.I. Rozhin
ON SIMULATION OF CASE HISTORY OF THE MESSOYAKHA GAS FIELD
http://www.ogbus.ru/authors/Argunova/Argunova_1.pdf (in Russian)
We have analyzed real histories of gas production from two gas fields of the Russian North with particular attention to the possibilities of hydrate formation in the bottom-hole zones of gas wells. The simulation of the cases has been used to find out the effects of the fields parameters, particularly initial pressure and temperature and gas mixtures composition. The corresponding mathematical model is based on the theory of non-isothermal multiphase flow in porous media with mass exchange between gas, water and hydrate. It includes a method of calculation of gas hydrate equilibrium conditions for a given gas mixture.
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05.03.08, Rubin R. Kuchumov, R.R. Kuchumov
ALGORYTHMIZATION TASK OF CALCULATING THE PHYSICAL PROPERTIES OF OIL, GAS AND ROCKS IN THE PACKAGE MODELINGSED
http://www.ogbus.ru/authors/KuchumovR/KuchumovR_1.pdf (in Russian)
We consider algorithms for calculating the physical properties of oil, gas and rocks using ModelingSED software package, developed by the authors. An analytical method for calculating oil saturation pressure of gas on the basis of approximation saturation pressure dependence of the density of oil and Gas. We construct volumetric coefficient dependence on oil reservoir pressure are used in the hydrodynamic calculations.
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21.02.08, Kuchumov R.Ya., Sorokin P.M.
ANALYSIS OF THE RESULTS OF NUMERICAL SIMULATION SOLUTIONS TO THE NON-FILTRATION OF LIQUIDS
http://www.ogbus.ru/authors/Kuchumov/Kuchumov_1.pdf (in Russian)
We consider a number of approximate and exact methods of solving problems non abnormal fluid filtration. We study the problem of turbulent fluid influx to the borehole, launched with a constant flow, in a nonlinear filtering law in the reservoir and the commissioning of the gas wells with a constant flow, taking into account changes in temperature.
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15.02.08, B.N. Poliakov
THE METHODOLOGY OF PARAMETRIC OPTIMIZATION OF DETAILS AND DESIGNS OF COMPLEX CONFIGURATIONS
http://www.ogbus.ru/eng/authors/Poliakov/Poliakov_2.pdf
The opportunity is substantiated and the algorithm of stage-by-stage consecutive parametric optimization of carrier details and designs of the complex configurations, based on correct application of strict mathematical methods is offered, serviceability and efficiency which is proved of many years practice of designing of the equipment of heavy mechanical engineering
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13.02.08, S.V. Noskov, V.A. Chichugin
ANALYSIS OF THE SIMULATION RESULTS MAINTENANCE EFFICIENCY GAS PUMPING UNITS
http://www.ogbus.ru/authors/Noskov/Noskov_1.pdf (in Russian)
The results of numerical simulation mode service gas pumping units. It has been shown that maintenance of appropriate only for small values of mezhprofilakticheskogo period. If these values more critical, the prevention duties, as well as lead to reduced utilization of the unit, and, consequently, to reduce its operating time. In planning profits to be taken into account costs associated with repairs.
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15.01.08, R.F. Rashitov, I.R. Kuzeev, R.R Tlyasheva
INCREASE STABILITY TO EXPLOSION BUILDINGS AND CONSTRUCTIONS
http://www.ogbus.ru/authors/Rashitov/Rashitov_2.pdf (in Russian)
In the article for increase stability to explosion buildings and constructions of the oil refining enterprises placed on a way of movement of a shock wave of the special protector of the optimum type, capable to reduce influence of a shock wave is offered. Parameter of optimization is the minimal value of overpressure in front of a shock wave before protected object. Selection of such protector is offered to be realized with use of numerical methods of calculation.
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24.12.07, B.N. Poliakov
COMPARATIVE STATISTICAL ESTIMATION OF PARAMETERS OF THE RESPONSE FUNCTION AT PLANNING EXPERIMENT
http://www.ogbus.ru/eng/authors/Poliakov/Poliakov_1e.pdf (in English)
http://www.ogbus.ru/authors/Poliakov/Poliakov_1.pdf (in Russian)
Comparison of statistical estimations of parameters of the response functions, received for active multifactorial experiment and at its planning shows, and their insufficient reliability for the last substantiates.
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10.12.07, N.A. Nebogina, I.V. Prozorova, N.V. Yudina
THE CHARACTERISTICS OF HYDROCARBON TYPE CONTENT AND RHEOLOGY WATER-IN-OIL SYSTEM
http://www.ogbus.ru/authors/Nebogina/Nebogina_1.pdf (in Russian)
The influence of water content in emulsions on hydrocarbon type content of water-oil interfaces is investigated. The investigated emulsions are stabilized by asphaltenes and resins. The rheology behavior was investigated in depend on water content in the water-oil emulsions.
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06.11.07, A.M. Safarov, N.S. Minigazimov, E.V. Fatianova, R.M. Khatmullina
OPTIMIZATION OF LIQUIDATION MEASURES AT HIT OF PETROLEUM TO THE MOUNTAIN RIVER
http://www.ogbus.ru/authors/SafarovAM/SafarovAM_3.pdf (in Russian)
The technical decision for localization water-oil emulsion on the mountain rivers is offered. For translation emulsified petroleum in film petroleum it is necessary to build the cascade of dams and ditches. For an effective water-oil emulsion separation it is necessary to take into account length of ditch.
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29.10.07, A.M. Safarov, F.H. Kudasheva
ESTIMATION OF COURSE OF POSTEMERGENCY SITUATIONS AT MAIN OIL-PIPE-LINES WRECKS
http://www.ogbus.ru/authors/SafarovAM/SafarovAM_2.pdf (in Russian)
The algorithm of forecast estimation of course of emergencies and protection of natural environment against pollution by oil is developed. The algorithm includes a stage of formalization of a choice of means and methods of localization and gathering of an oil spillage. The algorithm can be used on initial and the subsequent stages of emergencies course for acceptance of optimum decisions.
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12.10.07, I.Kh. Bikbulatov, R.R. Nasyrov, R.R. Daminev, A.Yu. Bakiev
METHOD OF UTILIZATION OF THE MAIN VAST OF SODA ASH OBTAINING
http://www.ogbus.ru/authors/BikbulatovI/BikbulatovI_2.pdf (in Russian)
A method of utilization of the main vast of soda ash obtaining through ammoniac techniques - distiller liquid is presented. A techniques are based on the obtaining of end product - calcium peroxide - extensively used in environment management, agricultures, industrial production and others fields of national economy. The results of laboratory studying using an ammoniac solution and a sodium hydroxide solution are shown.
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02.10.07, M.D. Sokolova, I.V.Baranets, A.S. Ramsh, M.L. Larionova
POLYMERIC-NANOCOMPOSITION AS MODIFIER OF SEALING NITRILE RUBBER
http://www.ogbus.ru/authors/Sokolova/Sokolova_1.pdf (in Russian)
The influence of polymeric nanocomposition, consisted of ultrahigh molecular weight polyethilene ( UHMWPE) and b-sialone, on interfacial bondary condition of nitrile rubber and UHMWPE was studied.
By means of X-ray diffractometry, electron microscopy methods phase and molecular structure of the composition were studied. A complex of physical and mechanical test including the study of elasticity, wear-, oil- and cold resistance characteristics of materials were carried out.
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23.08.07, E.V.Beshagina, N.V.Judina, Y.V.Loskutova
CRYSTALLIZATION OF OIL PARAFFINES AT THE PRESENCE OF SURFACE-ACTIVE AGENTS
http://www.ogbus.ru/authors/Beshagina/Beshagina_1.pdf (in Russian)
The features process of forming a solid deposits in modelling paraffins solutions are investigated at variation of a gradient of temperatures between solution and adsorbing surface. The temperature effect of process, composition and properties of oil paraffins, resins and asphaltenes on an amount and structure a settling is showed.
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21.08.07, A.V. Grunvald
METHANOL CONSUMPTION GROWTH IN RUSSIAN GAS INDUSTRY AND GEOECOLOGICAL RISKS APPEARING IN THE PROCESS OF ITS USAGE AS HYDRATE INHIBITOR
http://www.ogbus.ru/authors/Grunvald/Grunvald_2.pdf (in Russian)
In operating procedures such as upstream, gas treatment and transfer, hard gas hydrates lead to serious problems based on the processes abnormality.
Traditional and main method of hydrate formation prevention in gas industry is usage of hydrate inhibitor - methanol.
Though methanol usage is a complicated problem with relation to its high toxicity and geoecological risks connected with methanol atmospheric discharge increasing on the background of methanol consumption growth.
This issue requires acceptance of more efficient methods of geoecological risks decrease.
The present article represents the new method of geoecological risks decrease - the usage of bioorganic fertilizer "PIXA".
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01.08.07, I.E. Lukyanova, V.V. Shmelev
FEATURES OF FLOWVISION AND ANSYS SOFTWARE'S COMBINED USE FOR THE DETERMINATION OFSTRESS CONDITIONS IN OIL TANKS
http://www.ogbus.ru/eng/authors/Lukyanova/Lukaynova_2.pdf
During operation of vertical cylindrical tanks for storage of oil and oil products significant quantities of compacted sediments can be formed and accumulated. As a result, tank useful capacity, tank farm turnover are reduced, oil storage cost is increased due to the necessity to put tanks out of operation and perform their cleaning. There are methods of cost reduction in case of timely removal of forming sediments by using, for example, various screw-type devices.
In order to determine deformed condition of the tanks during washout and mixing of sediments with movable oil jet produced by operation of the screw-type devices, flowvision and ansys software systems were applied. The article describes some features of solving the task.
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15.06.07, G.G. Kushtanova
SME PECULIARITIES OF THE FILTRATION IN CRACKED-POROUS RESERVOIRS
http://www.ogbus.ru/authors/Kushtanova/Kushtanova_2.pdf (in Russian)
Simulation of the nonsteady-state filtration in cracked-porous reservoir is considered. The distinctive appearance of the pressure restore curve is analyzed and compared with experimental data. The time dimension parameter related to blocks is estimated. The method of hydro-conductivity dynamic permissive determines the parameter distribution in heterogeneous reservoir is demonstrated.
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04.06.07, Mohamed Iqbal Pallipurath
DISSOCIATION OF HYDRATED MARINE SEDIMENT
http://www.ogbus.ru/eng/authors/Iqbal/Iqbal_1.pdf
Modelling of hydrate dissociation in a sediment bed is needed to understand the gas evolution characteristics. This will determine temperature profiles in the sediment bed at different times and also the rate of propagation of the dissociation front. The model would consider the subsidence of sediment bed during and after hydrate dissociation. Sediment collapse would affect the gas recovery from hydrated sediments and an understanding of the process is thus crucial to cost effective gas extraction from hydrate. The model gives us a picture of the collapse process in time. Sediment subsidence curves show that subsidence is a strong function of void ratio and compression index of the sediment. Lower void ratios resulted in almost linear dependence of subsidence on time, whereas higher void ratios produced a curvature in the plot. The effect was similar with lower compression indices producing gradual subsidence and higher values resulting in exponential curves. Total settlement plots illustrated a linear behaviour of settlement with time at low values of shear stress change. Larger values of both compression index and shear stress change caused markedly non linear relationship with time. Increasing iterations (in effect increasing the time of settlement) found settlements to taper off. The settlement curve obtained by the model was compared to the actual settlement curves of marine sediment under compression. It was found that when the model was set to the overburden pressure and other parameters of the experimental results, the prediction of settlement was acceptably close. The model will allow optimization of gas recovery efforts from hydrated sediments.
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20.04.07, V. Jouravel, M. Mansurov, A. Marichev
ANALYSIS OF TECHNICAL REQUIREMENTS ON VESSELS AND EQUIPMENT FOR OIL SPILL RESPONSE IN FREEZING SEA
http://www.ogbus.ru/authors/Jouravel/Jouravel_1.pdf (in Russian)
This paper analyzes technical requirements to oil spill response (OSR) equipment based on normative criteria and recommended practice on calculation of spill volumes, production rates of oil gathering and storage equipment. Requirements for OSR vessel are listed.
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20.03.07, I.N. Evdokimov, A.P. Losev
POTENTIAL OF UV-VISIBLE ABSORPTION SPECTROSCOPY FOR CHARACTERIZING CRUDE PETROLEUM OILS
http://www.ogbus.ru/eng/authors/Evdokimov/Evdokimov_1e.pdf
http://www.ogbus.ru/authors/Evdokimov/Evdokimov_1.pdf (in Russian)
New experimental data as well as analysis of published databases show that the potential of UV-Visible absorption (UVVA) spectroscopy for classification/evaluation of petroleum may be strongly underestimated. Even the simplest "coloration" approach, when monotonous UVVA spectra are characterized by a single numerical parameter, allows distinguishing various types of crude oils. Subjected to proper processing, apparently "featureless" UVVA spectrum shows a multiple peak structure superimposed on a general monotonous background providing a basis for UVVA employment for compositional analysis of crude oils. The main practical problem is that generally crude oils are opaque and have to be diluted for UVVA analysis. Our experiments show that oil dilution may strongly affect the measured UVVA spectra apparently due to de-aggregation of asphaltenes in a solution. Further development of UVVA techniques requires better understanding of the nature/composition of asphaltenes. A useful approach may be consideration of "molecular diversity" models, being developed for other systems with continuous UVVA spectra, in particular for humic acids and melanins.
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05.01.07, M.A. Fatykhov, N.J. Bagautdinov
ELECTRICAL ACTION ON THE PROCESS OF PARAFFIN CRYSTALLIZATION
http://www.ogbus.ru/authors/Fatykhov/Fatykhov_3.pdf (in Russian)
The strategy of paraffin crystallization-point tests has been formulated here. There have been shown its merits and demerits. The authors recommend using dielectric method, that is based on the defining of the infection in the graphic chart of oil and paraffin permeability on temperature.
There has been described the strategy and the plant for experimental investigation of the influence of an external electric field on the process of paraffin crystallization. At that, capacitance of cell where the investigated medium is placed, changes more rapidly than it could be changed without electric field, that is conditioned by the acceleration of paraffin crystals growth in the electric field. This process is also influenced by pyrobitumens.
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01.01.07, V.Sh. Shagapov, Z.A. Bulatova, A.V. Scheglov
TO THE THEORY OF REMOTE ACOUSTIC SOUNDING THE PUNCHED GAS CHINKS
http://www.ogbus.ru/authors/Shagapov/Shagapov_1.pdf (in Russian)
The opportunity of a remote way of sounding of quality of opening punched face zones of gas chinks with the help of acoustic signals is analyzed. With this purpose in work results of researches on evolution of acoustic waves in the cylindrical channels having the punched site are submitted. Quantitative and qualitative features of dynamics of waves are established depending on quality of punching. The results showing are received, that quality of opening of rocks essentially influence evolution of acoustic signals.
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26.12.06, S.V. Amelkin, A.T. Ahmetov, A.A. Gubaidullin, A.V. Shnaider
SOME PECULIARITIES OF FOAM FORMATION IN POROUS MEDIUM
http://www.ogbus.ru/authors/Amelkin/Amelkin_1.pdf (in Russian)
The processes of foam formation, flow and destruction in porous medium by consecutive pumping to porous medium of foam-generative solution and gas were investigated. The influence of residual oil on foam formation in porous medium was investigated.
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08.12.06, V.A. Sokolov
EVOLUTIONARY EQUATIONS ARE PHENOMENOLOGICAL MODELS OF OIL AND GAS PROSPECTING DEPOSITS
http://www.ogbus.ru/authors/SokolovVA/SokolovVA_1.pdf (in Russian)
Integral approach, in oil and gas deposit prospecting process gives the opportunity to study dynamic bed system evolutionary equations as phenomenological models. Thus, basic showing prospecting prognosis can be increased. In this report there are many examples of linear and nonlinear, autonomous and non-autonomous models, approved on the example of Timan-Pechora oil and gas deposit region.
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30.11.06, M.A. Fatykhov, N.J. Bagautdinov
CALCULATION RESEARCHES OF THE INFLUENCE OF TUBE SPACE ON GAS HYDRATE DECOMPOSITION IN THE CHINK AT THE EFFECT OF HIGH-FREQUENCY ELECTROMAGNETIC WAVE
http://www.ogbus.ru/authors/Fatykhov/Fatykhov_2.pdf (in Russian)
The problem of heat conduction in the tubing with gas-hydrate bean is being analyzed here. With this going on, high-frequency electromagnetic energy is being infused in the tube space. The influence of heat-and electro-physical properties of the tube space on the efficacy of gas-hydrate bean decomposition is being investigated here.
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25.11.06, R.F. Rashitov, R.R. Tlyasheva
APPLICATION OF THE COMPUTER ANALYSIS FOR AN ESTIMATION INFLUENCES OF SHOCK WAVES ON OPERATIONAL BUILDINGS
http://www.ogbus.ru/authors/Rashitov/Rashitov_1.pdf (in Russian)
In the article the algorithm allowing to estimate mode of deformation of construction of the operational buildings being most vulnerable at emergency explosions at the enterprises of oil refining and petrochemistry is submitted.
Calculation opportunities of ABAQUS one of the leaders among similar software packages are used in the field of engineering calculations which allow to solve practically any nonlinear problems taking into account of real behaviour of a construction at various types of loading.
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24.11.06, Ya.A. Kolesnikov, R,G. Rizvanov, A.M. Fairyshin
VIBRATION DIRECTION EFFECT IN WELDING ON RESIDUAL STRESSES IN THE BUTT WELD
http://www.ogbus.ru/authors/Kolesnikov/Kolesnikov_1.pdf (in Russian)
It is known that application of vibration in welding reduces residual stresses in welded constructions. But now this operation is not used widely because it is little learned. In present article there are results of research of vibration direction effect, used during welding of low-alloy steel's details on stresses of joint weld .
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16.11.06, V.N. Ostashkov, N.V. Skorobogatova
VISUAL MODELING OF DENDRITIC STRUCTURE
http://www.ogbus.ru/authors/Ostashkov/Ostashkov_1.pdf (in Russian)
In this paper we present the mathematical methods of visual modeling within the framework of a special course for engineering students by the example of process research of allocation of firm hydrocarbons at crystallization from oil fractions. Three components lay in the basis of visual modeling: science modeling (for example, to reveal as there is growth of paraffin formations during crystallization in oil), mathematics modeling and didactic modeling.
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15.11.06, V.P. Ryabinin , I.E. Lukyanova
SOME PROBLEMS OF SERVICE RELIABILITY OF VERTICAL STEEL CYLINDRICAL TANKS WITH COVERINGS WITH REGARD FOR ADHESION OF STORED PRODUCTS
http://www.ogbus.ru/authors/Ryabinin/Ryabinin_1.pdf (in Russian)
For reduction of losses from evaporation from vertical cylindrical steel tanks for storage of petroleum and petroleum products various types of floating coverings are used. The article provides the classification of coverings with basic design features, with regard for floatation ability, stability, and resistance to flooding for the tanks of a '' type with a stationary roof.
On this basis the most topical problems for the service reliability enhancement of with coverings are defined. The conducted experimental research on petroleum and petroleum products on metal and foamed polyurethane surface are described. The dependences of adhesion factor on metal and foamed polyurethane coverings from a kinematical viscosity of petroleum and petroleum products are obtained.
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02.11.06, M.A. Fatykhov, N.J. Bagautdinov
THE DEVELOPMENT OF A TECHNIQUE OF DEFINITION AND EXPERIMENTAL INVESTIGATION OF DIELECTRIC PARAMETERS OF GAS HYDRATE IN THE FIELD OF HIGH FREQUENCIES
http://www.ogbus.ru/authors/Fatykhov/Fatykhov_1.pdf (in Russian)
The strategy and experimental investigation of dielectric parameters of gas hydrate in the field of high frequencies has been formulated here. An essential time for indispensable measurements has been estimated in this work in contrast to well-known strategies. Flow block of experimental installation has been presented here. Basic electrical and hydraulic circuits of installation have been given. The main part of this installation is the original measuring cell, developed by the authors.
The existence of two maximums of dielectric dissipation factors of hydrate propane depending on electromagnetic oscillation frequencies has been experimentally shown here. Gas-hydrate indexes of these maximums are several orders greater than ice indexes.
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16.10.06, V. Idrisov, R. Tlyasheva , I. Kuzeev
HAZARD ZONES APPRAISAL OF UNSAFE INDUSTRIAL OBJECTS OF USING THE GEOGRAPHIC INFORMATION SYSTEM AND WAVELET-ANALYSIS ALGORITHMS
http://www.ogbus.ru/authors/Idrisov/Idrisov_1.pdf (in Russian)
The article describes the method of explosion-, flame-proof assurance of unsafe industrial objects. This method is based on proposed algorithms of hazard zones wavelet-analysis and the optimally safety disposition of the processing systems equipment of the oil-and-gas industries.
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13.10.06, V.K Berdin , M.M. Zakirnichnaja, N.Yu. Kirillova
STRESS-STRAIN PROPERTIES EVALUATION OF REACTION COLUMN BY MEANS OF FINITE ELEMENTS WITH MATERIAL PROPERTIES CHANGES TAKEN INTO ACCOUNT IN CONDITION OF LONG-TERM OPERATION
http://www.ogbus.ru/authors/Berdin/Berdin_1.pdf (in Russian)
On the basis of results of experimental researches and numerical modeling it is established, that design features of a reaction column and a change of mechanical properties of a material during continuous operation essentially influence the stressed condition of the device.
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13.10.06, I. Kuzeev, R. Tlyasheva, K. Ilin
DYNAMIC BEHAVIOUR OF THE COLUMNED DEVICE UNDER INFLUENCE OF THE STRIKING EXPLOSIVE WAVE
http://www.ogbus.ru/authors/Kuzeev/Kuzeev_2.pdf (in Russian)
In present paper, on base of the created methods of the three-dimensional calculation of the static behaviour of the columned device under staff state of working and dynamic behaviour at influence of the striking explosive wave, explored influence different factor such as corrosion bolt, account characteristic soil, influence amount bolt, as well as are built graphs dependencies to stability of the pillar from parameter of the blast, expressed in term of the distance from pillar before epicentre of the blast and tnt of the equivalent. The explored consequence of the fall of the columned device on heatchange device, located in area of columned device.
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15.09.06, K.V. Kortyanovich, N.G. Evdokimova, B.S. Zhirnov
DIELECTRIC PERMEABILITY AS AN INDEX DESCRIBING ADHESIVE PROPERTIES OF BITUMEN
http://www.ogbus.ru/authors/Kortyanovich/Kortyanovich_1.pdf (in Russian)
The aim of investigations was to define the link between the quantitative and qualitative method for estimation of the bitumen adhesion to mineral material and dielectric permeability of bitumen.
The adhesion and dielectric properties of bitumen have been shown to correlate. It has been found the dependence of the adhesive and dielectric properties of modified bitumen. The dielectric permeability can be used to estimate the bitumen adhesive quality and intensify the determination process of bitumen adhesion considerably.
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14.07.06, Amir Heydari, Keivan Shayesteh, Ladan Kamalzadeh
PREDICTION OF HYDRATE FORMATION TEMPERATURE FOR NATURAL GAS USING ARTIFICIAL NEURAL NETWORK
http://www.ogbus.ru/eng/authors/Heydari/Heydari_1.pdf
A great number of petroleum engineering calculations require knowledge of natural gas hydrate formation conditions. Ideally, natural gas hydrate formation conditions are determined experimentally in the laboratory, but these data are not always available. Correlations are consequently used to determine values for natural gas hydrate formation conditions. In this paper, an alternate tool, i.e. the artificial neural network (ANN) technique has been applied for estimation of temperature for gas hydrate formation.
ANN was applied to the 167 raw data in the range of 32-74 , 50-4200 psia and 0.554-1 for temperature, pressure and specific gravity, respectively. To check the ANN model, the samples were divided into two groups. One of them contained 149 samples and was used to train the network and the remaining 18 samples were used as the test sets. For the training of the different networks, the standard feed forward back propagation algorithm was used and several types of structures were tested to obtain the most suitable network for the prediction of solubility. To check the reproducibility of the results, each of the networks studied was trained three times. Finally the best ANN structure was determined as 7-5-1.
In comparison of performance analysis of ANN, the relative error (RE) was studied and maximum error found 3.035 percent and R2 value was equal to 0.9941. To ensure, the results of ANN was compared with the results of Sloan model. To sum up ANN shows the better results in comparison with it. So it can be concluded that ANN provides a good method in predicting temperature at witch hydrates formation occurs.
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16.05.06, A.N. Zotov, D.T. Akhiyarov, R.F. Nadirshin
IMPACT PROTECTION SYSTEM WITH QUAZINULL RIGIDITY
http://www.ogbus.ru/eng/authors/Zotov/Zotov_3.pdf
The paper is devoted to creation of elastic-systems with quazinull rigidity at presence of a hysteresis. Such characteristics of the given systems for which the area of a hysteresis loop is equal to an impact energy are gained, i.e. the opportunity of loss for one running of the system of all impact energy is theoretically shown. It is supposed to use the given system for simultaneous protection of the equipment against impacts and vibrations. The opportunity of use of the given system for seismic protection of the equipment is shown.
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03.05.06, M.N. Zakharov, Yu.A. Baharev
THE RECOMMENDATIONS ON SAFETY IMPROVEMENT OF STEEL VERTICAL CYLINDRICAL TANK
http://www.ogbus.ru/authors/Zakharov/Zakharov_7.pdf (in Russian)
The method of problem solution concerning safety improvement of cylindrical tank, working off its project life.
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03.03.06, A.A. Mukhamadiyev, M.A. Urakseev
MODERN HARDWARE FOR SYSTEMS OF ECOLOGICAL MONITORING
http://www.ogbus.ru/authors/Muhamadiev/Muhamadiev_1.pdf (in Russian)
In work the opportunity of use acousto-optic effect is considered at construction of new systems of ecological monitoring of an environment. The physical essence acousto-optic effect and its application in devices of ecological monitoring is described. The block diagram acousto-optic a gas analyzer and a principle of its action is presented.
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18.10.05, S.K. Sidorov, Y.P. Volkov
OFFERS ON IMPROVEMENT OF THE MANEUVERABILITY OF MULTIAXIS WHEEL MACHINE WITH THE HINGE-JOINTED FRAME
http://www.ogbus.ru/authors/Sidorov/Sidorov_1.pdf (in Russian)
By the example of wheel machine K-703MTP-127G for repair of the chinks, developed in OAO "Specmash", problems of improvement of parameters of a maneuverability of multiaxis wheel machines with the hinge-jointed frame are formulated. The brief description of mathematical model of turn of the wheel machine is given, allowing to pick up key parameters of transmission and the running part, influencing on parameters of turn.
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22.08.05, V.N. Filippov, .N. Shvareva, .P. Vinkelman, R.N. Khlestkin
ANALYSIS OF DIRT ADHERENCE OF SUPERFICIAL AQUEOUS OBJECTS REPUBLIC BASHKORTOSTAN BY PETROCHEMICAL AND OIL REFINING BRANCHES
http://www.ogbus.ru/authors/Filippov/Filippov_2.pdf (in Russian)
In work is considered of sewage, thrown off in reservoirs from firms of key branches of republic Bashkortostan.
Are described inserted of a measure on firms of the fuel and energy complex of republic Bashkortostan directed on lowering of a technogenic load on an enclosing environment.
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03.06.05, D.V. Saraev, I.V. Lunev, T.N. Yusupova, M.I. Tagirzyanov, M.R. Yakubov, Y.A. Gusev, G.V. Romanov
DIELECTRIC SPECTROSCOPY IN STUDYING MECHANISMS OF STRUCTURE-FORMING OILS
http://www.ogbus.ru/eng/authors/Saraev/Saraev_1e.pdf (in English)
http://www.ogbus.ru/authors/Saraev/Saraev_1.pdf (in Russian)
Variety and specific character of the questions appeared during study of oil dispersion systems (ODS) and anomaly in their behavior generate a need in consideration of that systems on micro- and macro-scale.
The aim of this work is the application dielectric spectroscopy method for investigation of the features of the different ODS structures and consideration of the reorganization processes dynamics in that structure under the influence of the temperature. Analyzing obtained dielectric spectra of the oil dispersion structures under investigation various distinctive features in dynamics of relaxation processes were revealed. According correlation of the dielectric parameters of the ODS components and microelements composition all crude oil samples were classified on 4 major groups.
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13.07.05, K. Sidelnikov, V. Vasiljev
A POSSIBLE APPLICATION OF THE STREAMLINE-BASED FLOW SIMULATION (SL-SIMULATION)
http://www.ogbus.ru/authors/Sidelnikov/Sidelnikov_1.pdf (in Russian)
A possible application of the streamline-based flow simulation (SL-simulation) at a complex data interpretation is described in article. Besides the streamline method's main ad-vantages are analyzed that contribute to the usefulness of the streamline simulation in solving problems which are difficult to solve by more conventional flow modeling techniques related to the process of the incompressible fluids displacing in large, heterogeneous reservoirs.
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06.07.05, V. Lyalin, K. Sidelnikov
THE MAIN MATHEMATICAL CONCEPTS FOR THE STREAMLINE-BASED FLOW SIMULATION
http://www.ogbus.ru/authors/Lyalin/Lyalin_1.pdf (in Russian)
The main mathematical concepts for the streamline-based flow simulation (SL-simulation) are given in article, as an efficient technology which complements the more traditional approaches to the mathematical description of fluids displacing in reservoirs. As far as it is possible, all key ideas with the names of their authors are given in a chronological ordering they follow in the articles devoted this theme.
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23.06.05, Yu.M. Polishchuk, I.G. Yashchenko
HIGH-VISCOSITY OILS: AN ANALYSIS OF REGIONAL AND TIME CHANGES
http://www.ogbus.ru/authors/PolishukYu/PolishukYu_1.pdf (in Russian)
Paper is devoted to analysis of reviewed materials on studies of physic-chemical properties of viscous oils, which are considered as main reserve of oil production for future years. Completed spatial analysis of regional regularities has shown that the most viscous oils in Russia are in Timano-Pechora and Precaspian oil-bearing basins. Analyses of regularities of oil viscosity change depend on depth show oil viscosity decreases with depth growth. It is shown that maximum value of oils viscosity is in Mesozoic rocks and its minimum value is in Precambrian rocks. In average, high viscous oils is heavy, sulfur, high resin, high asphaltenes ones and with small content of paraffin's and content of IBP 200C.
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14.06.05, Kh. Valiev
SUBSONIC GAS FLOW OVER PERMEABLE FLAT PLATE
http://www.ogbus.ru/authors/ValievKh/ValievKh_1.pdf (in Russian)
It was shown that determination of velocity of subsonic gas flow through a permeable flat plate under nonlinear condition of penetrability is reduced to solution of nonlinear singular integral equation. The method of solution is given as well.
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01.11.04, A. Shirokih
PERSPECTIVES OF DEVELOPMENT OF FRICTIONAL JUNCTIONS ON HIGH-STRENGTH BOLTS
http://www.ogbus.ru/authors/Shirokih/Shirokih_1.pdf (in Russian)
The problems on development of frictional junctions on high-strength bolts are considered In the article. The original design solution of frictional junction perceiving flexing a moment is offered by the author. The amount of bolts in junction is optimized. The theoretical substantiation of the offered scheme of a frictional joint is indicated. The conclusions about influence of a disposition of bolts in the junction concerning an axes or line of an operation of efforts, originating in it, on lift capability of frictional junction are made.
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20.04.04, S.B. Sapojnikov, M.V. Forental
USING ANSYS (DESIGNSPACE 7.0) AND ALGOR (V.13.24) FOR STRUCTURE OPTIMIZATION OF HYDRAULIC CYLINDER HOUSING
http://www.ogbus.ru/authors/Forental/Forental_2.pdf (in russian)
ANSYS (DesignSpace 7.0) and ALGOR (v.13.24) were used for structure optimization of hydraulic cylinder housing. The calculation of stress-strain state under working loads for the determination of possibility of removing an unloaded material was described. It was also shown the plastic deformation of metal part in places of external winding by carbon fiber reinforcing material (CFRP) for the making a favourable distribution of residual stresses after previous overloading.
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07.04.04, A.F. Tynyany
NUMERICAL SIMULATION OF QUASI STATIC CONTACT PROBLEM WITH ELASTOPLASTIC MATERIAL MODEL IN ANSYS/LS-DYNA
http://www.ogbus.ru/authors/Tynyanyi/Tynyanyi_1.pdf (in russian)
For minimization of mass and production cost of spherical joint "Master" sheet blank forming process is offered. Analysis of quasi static contact problem with elastoplastic material model is provided by finite element method into LS-DYNA. Localization of overloaded places in numerical model of blank is identical with experiments. Tempering of metal blanks before and after forming operation is recommended. The maximal thickness of blank does not exceed 8 mm for joint of 50 mm diameter rods.
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02.04.04, S.B. Sapojnikov, M.V. Forental
IDENTIFICATION OF MATERIAL MODEL PARAMETERS BY DESIGN-EXPERIMENTAL METHOD USING ANSYS AND LS-DYNA PACKS
http://www.ogbus.ru/authors/Forental/Forental_1.pdf (in russian)
LS-DYNA software is using long time for deciding the problems of punching the metal plates by high velocity objects. Herewith needs are appeared for determination of plastic characteristics of these material under high velocity loading. It is offered identification of elastoplastic model of material to conduct by the theoretical - experimental method. As the main limitations on an experimental procedure are followings: the experiment should be simple enough and highly quantitative. As such experiment there can be used an impact of a high hardness sphere with known initial velocity on a plate from an investigated material.
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30.03.04, S.B. Sapojnikov
DESIGNING OF DEPTH PUMP FIBERGLASS RODS ASSEMBLY
http://www.ogbus.ru/authors/Sapozhnikov/Sapozhnikov_1.pdf (in russian)
Main technical problem of using glass-fiber plastics is a structure of load bearing part. Stan-dard bond joint of steel end and glass-fiber rod under the GOST possesses a serious defect, con-nected with nonhomogeneity of shear stress on the axis of rod. Obviously the most perspective structure will be bonded joint with conical parts to use not only adhesion power but also pressure-shear interaction to increase strength.
Modeling of all details and assemblies were made into SolidWorks, which allows to use parameterization for the following fast changing a geometry at the searching for optimum designs of joint. Calculations of stress-state are conduct by the FEA method into DesignSpace software.
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25.03.04, A.A. Shapiro
FINITE STRAIN PROBLEMS IN ANSYS AND LS-DYNA. APPLIED NUMERICAL METHODS VERIFICATION
http://www.ogbus.ru/authors/Shapiro/Shapiro_1.pdf (in russian)
Present-day finite element method (FEM) packages, such as ANSYS and LS-DYNA, are multiple objective complexes for the analysis and a solution of the broad audience of tasks in different areas of physics. In all these packages possibilities for problem solving in geometrically nonlinear setting are announced. However the analysis of domestic both foreign references and simples tests have allowed to place, that the numerical methods used now by the most popular packages for solving of finite strain problems, are insufficiently correct and give an adequate estimation only in special cases. The refusal from an offsets and strains smallness hypothesis in solid mechanics reduces in significant problems which till now up to the extremity are solved, despite of the urgency for practical applications.
In this article the main attention is given to inspection of reasonableness of the outcomes obtained at calculations of tasks with finite strains in FEM packages. The verification scheme is offered and trying is made to outline boundaries of applicability of two popular packages (ANSYS and LS-DYNA) for finite strains problems solving.
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27.02.04, Egorova E.N.
Kinds of natural resources of sea environment, sensitive to oil spill pollution accident
http://www.ogbus.ru/authors/Egorova/Egorova_1.pdf (in russian)
The author allocates five kinds of natural resources in structure of sea environment and analyzes each of them on a degree of sensitivity to spilled oil pollution by accident. As a result of research the following natural resources sensitive to oil pollution are separated: biological resources, recreational resources, assimilated potential of water area and chemical resources of water, as these kinds of resources will get negative changes because of spilled oil pollution by accident on water area of the sea or littoral territory.
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23.09.03, Zakirnichnaya M., Kuzeev I., Tkachenko O.
FULLERENES IN IRON-BASED CARBONACEOUS ALLOYS
http://www.ogbus.com/eng/authors/Kuzeev/Kuzeev_1.pdf
Investigated fullerene formation in blast furnace process, dependence of melt cooling conditions during the first crystallisation of grey pig iron and high-strength iron on fullerene amount, as well as self-organisation of fullerenes while saturating of metal surface with carbon atoms during carburizing.
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20.03.03, Zlotsky S., Dekhtyar E., Gafarova Ju.
REDOX TRANSFORMATIONS OF CYCLIC ACETALS
http://www.ogbus.com/eng/authors/Zlotsky/Zlotsky_1.pdf
It was proved that cyclic acetals oxidation proceeds with quantitative formation of glycol monoesters, which are difficult to obtain by other methods. Cyclic acetals reduction by alkyls and metal hydrides, exactly by aluminum derivatives, results in formation of monoethers. The conditions of the reaction proceeding and influence of the reagents structure on the reaction results are discussed.
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13.03.03, Khlestkin R., Samoilov N.
INVESTIGATION AND DEVELOPMENT OF SORPTION TYPE SKIMMERS
http://www.ogbus.com/eng/authors/Khlestkin/Khlestkin_1.pdf
On the basis of formulate conception of the optimal absorbent is tested the sorption properties more 30 potential ones. There are properties of cotton manufacture residuals, named as "SINTAPEX", which possess with sufficiently high sorption ability for the numerous products. There are patented three type of basis construction for these skimmers and five their modifications. It is examined and studied some variations of skimmer sorption type and work out stochastic mathematical model in form system of 10 regression equations on the base method of planning of experiments by four main parameters which describes oil-gathering. There are permit producing in the company North-West Trunk Pipelines the experimental batch of the skimmers.
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09.01.03, Shaidacov V.V., Laptev A.B., Golubev M.V.
MAGNETIC APPARATUSES IN OIL AND GAS RECOVERY
http://www.ogbus.ru/eng/authors/Shaidakov/Shaidakov_1.pdf
The article gives the analysis of the perspective of the usage of the magnetic treatment devices in the sphere of oil and gas recovery. Some ways of the usage of magnetic treatment devices for coping with complications caused by emulsion formation, salt percipitations, corrosion and asphalt percipitations, invented in Ufa State Petroleum Technological University are also discussed here.
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11.12.2001, B. Mastobayev, E. Mowsumzade, T. Dmitriyeva, M. Muslimzade, E. Mamedyarov
THE APPLICATION OF THE OIL FUEL FOR AUTOMOBILE TRANSPORT.
(THE FIRST HALF OF THE 20TH CENTURY)
http://www.ogbus.com/eng/authors/Mastobaev/theappl.pdf
So far development of the automobile transport was accompanied by means of change of the composition quantity of the oil fuel. From the moment of the invention of the internal combustion engines of the carburetor type was began the era of the use benzene of the motor oil, which was became the general product of oil refining. The invention of engines with high degrees of compression required fuel with the sufficient anti-detonation characteristics. In connection with that fact there was a tendency to gradual substitution of pure benzene with mixed benzene. Such additions as benzole, tetraethyllead and alcohol served as antidetonation dopants. The creation of such cracking-systems allowed to increase octane numbers of benzene. At the end of the 19th century the invention of the new diesel engine leed to the creation of another type of motor fuel. Diesel engines burned oil fuel. Thus, at the first half of the 20th century oil fuel took first place among motor fuel of all sorts on the foreign market.
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11.12.2001, Batchuluun Gantsetseg, Kh. Sharkhuu
DISTRIBUTION AND EVOLUTION PERMAFROST IN MONGOLIA OF A PART, IS LOCATED IN SOUTH SIBERIAN REGION OF RUSSIAN
http://www.ogbus.com/eng/authors/Gana/gan1.pdf
Southern areas of Siberian region are located on territory of Mongolia. To them concern basin of lake Khubsgul, Orkhon- Selenge, Khentii a mountain. In orographic the attitude (relation) the Khubsgul basin is located between on northern aspect of East Sayan, in the south of offshoot Khangai, on west of mountain system Tuva and on east of Baikal mountain area. Khubsgul concerns to basin of Arctic Ocean and adjoins to basins Baikal, Angari and Enisei.
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11.12.2001, I.Siraeva, N.Teplov, S.Mikhailova, A.Syrkin
GAS FIELDS AND GAS PROCESSING IN BASHKORTOSTAN
http://www.ogbus.com/eng/authors/Siraeva/gasfields.pdf
The history of oil and gas content discovery, main stages of formation and development of gas-condensates processing in Bashkortostan are considered.
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