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ISSN 0207-2351 Scientific-technical journal published since 1965 April 2017 ¹ 4 12 issues per year
CONTENÒS |
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DEVELOPMENT OF OIL AND GAS-OIL FIELDS |
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MATHEMATICAL MODELLING |
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TECHNIQUE AND TECHNOLOGY OF OIL PRODUCTION |
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RESEARCH OF FORMATIONS AND WELLS |
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PREVENTION OF PARAFFIN SEDIMENTATION, SALTS AND HIDRATES |
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GATHERING, TRANSPORTATION AND PREPARATION OF OIL, GAS AND WATER |
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Muzipov Kh.N. Water preparation problem in the offshore oil and gas fields (p. 46-49) |
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THEORETICAL ASPECTS |
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Iktisanov V.A. Oil synthesis rate when developing deposits (p. 49-54) |
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Information on the articles (p. 55-59) |
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Information on the articles |
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UDC 626.276.1/.4:622.276.43"5":665.61.035.6
EXPERIMENTAL AND MODEL RESULTS OF CYCLICAL EFFECTS ON PRODUCTIVE FORMATION WITH HIGH VISCOUS OIL (p. 5)
Yury Alexeevich Kotenyev, Yury Veniaminovich Zeigman, Shamil Khanifovich Sultanov, Vyacheslav Sharifullovich Mukhametshin, Artem Yurievich Kotenyev
Federal State Budget Educational Institution of Higher Education "Ufa State Petroleum Technological University" 1, Kosmonavtov str., 450062, Ufa, Republic of Bashkortostan, Russian Federation, e-mail: kotenyov@mail.rum, jvzeigman@ya.ru, ssultanov@mail.ru, vsh@of.ugntu.ru, geokot@inbox.ru
The article is devoted to numerical, laboratory and experimental substantiation of the cyclic impact on the productive formations with high-viscous oil. Based on rheological and filtration studies, oil mobility, including its thixotropy properties, is examined. The optimal semi-cycles of water injection are determined by the results of numerical simulation.
Keywords: high-viscous oil; cyclic effect; thixotropic property of crude oil.
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UDC 622.276.1/.4.001.57:622.276.43
AN EXAMPLE OF A SUPER-ELEMENT SIMULATION OF AN OILFIELD WATERFLOODING (p. 10)
Ivan Vladimirovich Afanaskin, Sergey Grigorievich Volpin, Petr Vladimirovich Yalov, Natalia Petrovna Efimova
Federal Scientific Center "Research Institute for System Studies of the Russian Academy of Sciences" (FGU FNC NIISI RAN) 36, bld. 1, Nakhimovsky prosp., 117218, Moscow, Russian Federation, e-mail: ivan@afanaskin.ru
The article discusses a surrogate (principle) model of an oil formation waterflooding based on a super-element concept. To approximate the system of equations, the explicit numerical scheme is fully used, thus allowing an engineer to implement this approach for any field without any special software. An example of the calculation of a definite oilfield water-flooding is given. The model can be used for a full-scale or sectorial modeling, for solving problems of on-line management of oil fields development, for controlling the development and construction of maps.
Keywords: water-flooding; express-modeling; surrogate model; concept model.
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DYNAMIC MODELS OF FLOWING AND MECHANIZED OIL PRODUCING WELLS TO ANALYZE THEIR STABILITY AND CONTROL (p. 17)
M.G. Volkov
LLC "RN−UfaNIPIneft" 3/1, Bekhterev str., 450103, Ufa, Republic of Bashkortostan, Russian Federation, e-mail: m_volkov@ufanipi.ru
Development of mathematical models to analyze flowing and mechanized oil producing wells that allow creating high-speed programs characterized by the acceptable accuracy and operating in real time mode, is relevant for modern systems that provide control of oil producing wells, diagnosing of the technical state of their submersible pumping equipment and prediction of their characteristics. The paper presents some mathematical models of a bottom-hole filtration in oil producing wells, processes occurring in their annulus, hydrodynamics of gas-liquid flow in tubing.
Keywords: mode; work; well; equipment; model.
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EFFICIENCY ENHANCEMENT OF INTER-WELL PUMPING SYSTEMS EQUIPPED WITH ELECTRIC CENTRIFUGAL PUMPS (p. 21)
Rustam Talgatovich Kalimullin
NGDU "Almetyevneft" PJSC "Tatneft" 75, Lenin str., 423450, Almetyevsk, Republic of Tatarstan, Russian Federation, e-mail: absalyamov@tatneft.ru
Danis Nafisovich Dautov
LLC "TagraS-RemServis" 43, R. Fakhretdin str., 423450, Almetyevsk, Republic of Tatarstan, Russian Federation
The article considers the problem of reducing the coefficient of wells-acceptors operation caused by the lack of technologies for automatic regulation of volumes and injection pressure in the inter-well pumping system (IWPS). A method to operate an IWPS sector in the PID-control mode, which allows maintaining the pressure at the given level when changing the well-acceptors operational mode, is proposed. The results of the experimental work to operate an IWPS sector in the PID-control mode are presented.
Keywords: formation water; inter-well pumping; well-donor; well-acceptor; PID-control mode; pressure meter; frequency-controlled electric drive.
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ORGANIZATION OF THE SYSTEM PROVIDING MONITORING OF OIL PRODUCTION ENERGY EFFICIENCY (p. 25)
A.R. Rakhmanov, E.V. Ozheredov, I.R. Safiullin
NGDU "Almetyevneft" PJSC "Tatneft" 75, Lenin str., 423450, Almetyevsk, Republic of Tatarstan, Russian Federation, e-mail: absalyamov@tatneft.ru
The article considers the problems of monitoring of oil production energy efficiency, being important when forcing the liquid production volumes. One of the problems is automation of monitoring of on-line detection of wells with a sharp increase of electricity specific consumption. The production activity of the Oil and Gas Production Department (OGPD) is caused by the need to reduce electric energy consumption, without reducing the volumes of oil production. Each year, strict norms of specific power consumption by oil production processes are established.
Keywords: energy efficiency; oil production; specific consumption of electric energy; monitoring.
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OIL EXTRACTION FROM A LAYERED-HETEROGENEOUS FORMATION BY USING ELECTRO-CHEMICALLY ACTIVATED WATER (p. 28)
I.N. Yakovleva
Institute of Geology and Geophysics, NAS of Azerbaijan 119, G. Javid prosp., AZ1143, Baku, Republic of Azerbaijan, e-mail: irayak78@yandex.com
The article presents the results of some experiments carried out to study the effect of electro-chemically activated water on the coefficient of oil recovery from a layered-heterogeneous formation with hydrodynamically isolated layers. It is found out that after water-flooding the use of electro-chemically activated water in layered-heterogeneous formations with hydrodynamically isolated layers leads to an increase in the oil recovery efficiency. It is shown that when pumping electro-chemically activated water into the layered heterogeneous formation in combination with pumping of the polymer solution margin into the highly-permeable layer, an increase in the oil recovery coefficient is observed.
Keywords: layered-heterogeneous formation; electro-chemically activated water; polymer solution margin; oil recovery coefficient.
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EFFECT OF IRON SULPHIDE INCREASED CONCENTRATION IN OIL FIELDS ENVIRONMENTS ON PROTECTIVE PROPERTIES OF "CORTRON RN-404" CORROSION INHIBITOR (p. 32)
Nadezhda Sergeevna Buldakova, Olga Alexandrovna Ovechkina, Yulia Vladimirovna Beresneva, Veronika Konstantinovna Miller, Nadezhda Valerievna Novikova
CJSC "Izhevsk Oil Research Center" 175, Svoboda str., 426057, Izhevsk, Republic of Udmurtia, Russian Federation, e-mail: NSBuldakova@udmurtneft.ru, OAOvechkina@udmurtneft.ru, YVBeresneva@udmurtneft.ru, VKMiller@udmurtneft.ru, NVNovikova@udmurtneft.ru
Alexandra Sergeevna Antonova
Udmurt State University 1, Universtitetskaya str., 426000, Izhevsk, Republic of Udmurtia, Russian Federation, e-mail: an.alexandra2010@yandex.ru
Corrosion aggression of the fluid produced in the oil fields of JSC "Udmurtneft" causes an increased number of downhole equipment failures in the protected fund. One of the reasons of reduction of corrosion inhibitors effectiveness is iron sulfide presence in the produced water. The suspended particles influence, represented by iron sulfide, on the protective action of "Cortron RN-404" corrosion inhibitor is evaluated. It is determined that despite the dependence on the ionic composition of the studied formation waters, iron sulfide presence in the system is accompanied by a significant increase of metal corrosion rate and decrease of the reagent efficiency, caused, among other things, by its adsorption on the suspended particles surface. The optimal amounts of "Cortron RN-404" corrosion inhibitor, providing no less than 90 % of the efficiency, are determined on the model waters of five fields with iron sulfide various concentrations.
Keywords: difficulties that arise when producing oil; corrosion; corrosion inhibitor; reagent effectiveness; suspended particles; iron sulfide; adsorption; gravimetry.
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UDC 622.276.53.054.23:621.67-83
SOME ASPECTS OF SCALING MECHANISM (p. 35)
Adib Ahmetnabievich Gareev
"Nizhnesortymskneft" Oil and Gas Production Department e-mail: Vlasov_RV@surgutneftegas.ru
The article is devoted to studying the process of salts deposition when heating the gas-liquid mixture in centrifugal pumping units. The process of uncontrolled heating of the associated water inevitably leads to its boiling, being one of the main reasons for salts deposition. An effective and low-cost way to prevent the formation of salts, and, consequently, the centrifugal pump’s irreversible failure, are, first of all, control and temperature control of the operational pump. Other ways to exclude the deposition of salts in low-capacity plants are either their periodic operation or periodic operation in a short-term mode.
Keywords: gas-liquid mixture; salt deposits; centrifugal pump.
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WATER PREPARATION PROBLEM IN THE OFFSHORE OIL AND GAS FIELDS (p. 46)
Kh.N. Muzipov
Tyumen Industrial University 38, Volodarsky str., 625000, Tyumen, Russian Federation, e-mail: halim46@mail.ru
The article deals with the problems of placing systems of reservoir pressure maintenance in offshore fields. The requirements to the sea water preparation for injection into a formation are briefly described. The schemes of filters for sea water fine cleaning, a two-stage installation of MINOX deaerator, deaerators characteristics of are given.
Keywords: oil and gas deposits; production; system of a formation pressure maintenance; offshore platform; sea water; mechanical impurities; filter; regeneration; ferric chloride; polyelectrolyte; deaerator; biocide; antifoam substances.
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OIL SYNTHESIS RATE WHEN DEVELOPING DEPOSITS (p. 49)
V.A. Iktisanov
Tatar Scientific-Research and Design Institute of Oil (TatNIPIneft) PJSC "Tatneft" 32, Musa Jalil str., 423236, Bugulma, Republic of Tatarstan, Russian Federation, e-mail: iktissanov@tatnipi.ru
The article considers the problems of oil synthesis in fields developed for a long time. Based on the previously proposed concept, the reasons for replenishment of oil reserves are shown, an approach to the description of the oil inflow is proposed, and calculations are made for the Romashkinskoye and Midway-Sunset fields. It is noted that at the latest stages of development the flow of oil can constitute a large part of production, intensive development of deposits provokes a high rate of oil formation.
Keywords: oil synthesis; oil production; primary substances; space curvature; relaxation time.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |