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ISSN 2413-5011 Scientific-technical journal AND DEVELOPMENT OF OIL AND GAS FIELDS published since 1992 May 2020 ¹ 5(341) 12 issues per year
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OIL AND GAS PROSPECTING |
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Kudamanov A.I., Karikh T.M. A multi-scale approach to the study of the Berezovsky formation deposits (p. 15‑24) |
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DEVELOPMENT OF OIL AND GAS FIELDS |
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ECONOMIC ASPECTS IN GEOLOGY |
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Information on the articles |
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UDC 550.4:552.578:653.983+551.76 DOI: 10.30713/2413-5011-2020-5(341)-4-14
TECTONIC MODEL OF THE EASTERN PART OF THE SVALBARD
PLATE IN THE BARENTS SEA
Oleg Arkadievich Smirnov1, Cand. of geol.-mineral. sci., Vladimir Nikolaevich Borodkin2,3, Dr. of geol.-mineral. sci., Arkady Romanovich Kurchikov2,3, Dr. of geol.-mineral. sci., Andrey Viktorovich Lukashov1, Ekaterina Veniaminovna Sharifyanova1, Alexander Sergeevich Smirnov3,4, Cand. of geol.-mineral. sci., Alexander Vladimirovich Pogretsky4
1LLC "Ingeoservice" 211, Respublika str., Tyumen, 625019, Russian Federation, e-mail: info@ingeos.info
2A. Trofimuk Institute of Petroleum Geology and Geophysics, the West-Siberian branch of the Russian Academy of Sciences 56, Volodarsky str., Tyumen, 625000, Russian Federation, e-mail: niigig@tmnsc.ru
3Tyumen Industrial University (TIU) 38, Volodarsky str., Tyumen, 625000, Russian Federation
4LLC "Gazprom geologorazvedka" 70, Hertsen str., Tyumen, 625000, Russian Federation, e-mail: a.smirnov@ggr.gazprom.ru
The paper presents the new seismic data on the specific features of the Svalbard Plate geological structure within the Russian part of the Barents Sea region. The Svalbard plate has an Archean basement age, which corresponds to the Grenville orogenic cycle (approximately 1250...980 million years). The close link is established between the tectonic model of sedimentary complexes formation (Upper Permian-Triassic, Jurassic (Aalenian-Bajocian, Bathonian-Callovian stages), of Neocomian and Aptian-Albian-Cenomanian stages) and hydrocarbons fluid migration manifestations. Seismic process indicators of the vertical hydrocarbons migration have been studied according to the 2D and 3D seismic data.
Keywords: the Barents Sea; sedimentary complex; seismic section; reflecting horizon; seismic attributes; hydrocarbons (HC) migration.
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UDC 553.98(571.1) DOI: 10.30713/2413-5011-2020-5(341)-15-24
A MULTI-SCALE APPROACH TO THE STUDY OF THE BEREZOVSKY FORMATION DEPOSITS (p. 15)
Alexander Ivanovich Kudamanov, Cand. of geol.-mineral. sci., Tatiana Mikhailovna Karikh
LLC "Tyumen Petroleum Research Center" 42, Maxim Gorky str., Tyumen, 625048, Russian Federation, å-mail: aikudamanov@tnnc.rosneft.ru
The problems of fractured, including siliceous, formations productivity have been faced by oil geologists for decades. The analysis of seismic works (worldwide) revealed presence of vertical local intervals of polygonal fault systems (with takyr-like ranges of 100...1000 m). In Western Siberia such systems were found in sediments with a high content of free silica (the flasks of the Upper Cretaceous Berezovskaya formation and the Eocene Lyulinvorsky formation). The size of takyrs (drying from the surface) varies within 10...50 cm (several orders less than seismic ranges). Polygonal fracture systems in the horizons of finely dispersed rocks and takyrs in soils, with a high degree of probability, are formed as a result of natural colloidal structures dehydration. The microscope use provided identification of cracks of syneresis from the inside and drying from the surface in the flasks of the Berezovskaya formation (blockiness from millimeters to the first centimeters, which is 1-2 orders less than takyr). The formation of cracks occurs not only tectonically, but also in the process of dispersed sediments dehydration of – drying from the surface (takyrs, syneresis cracks), and from the inside (septar cracks). During tectonic activations, discontinuous deformations of various origin participate in the movement of blocks of the earth’s surface (the larger the crack is, the more noticeable is its contribution).
Keywords: deposits of the Berezovsky formation; destructive deformation; syneresis cracks; fault violations.
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UDC 550.8.013 DOI: 10.30713/2413-5011-2020-5(341)-25-30
DETAILING OF THE GEOLOGICAL STRUCTURE OF THE AB
GROUP OF THE VATIEGAN FIELD RESERVOIRS IN ORDER TO OPTIMIZE THE ADDITIONAL
EXTRACTION
Alexander Alexandrovich Kalugin, Anna Dmitrievna Alexeeva, Valery Evgenievich Kopylov, Cand. of geol.-mineral. sci.
LLC "LUKOIL–Engineering" 3, bld. 1, Pokrovsky boulevard, Moscow, 109028, Russian Federation, e-mail: KaluginAA@yandex.ru
Intensive oil and gas production has been going on for many years at long-discovered fields, and at present the main strata are in the final stages of development. To maintain the rate of production, the existing geological base ceases to satisfy the development needs and requires detailed elaboration. Improvement of the existing geological models does not always bring a positive effect, and the price of a solution aimed at additional extraction of residual reserves is quite high. To detail the geological structure of a field, verification of the conceptual geological model underlying it is necessary. In some cases, rethought of the concept leads to its change and the creation of a new geological model virtually "from a standing stop". Some specific features of a new detailed geological model of the main group of AB productive reservoirs are shown on the example of a unique Vatiegan field in terms of size and amount of reserves. The new geological model is completely revised, which is caused by a change in the conceptual (principle) basis. The paper briefly touches upon the limitations on the source materials available, which are characteristic not only for the Vatiegan field. The difference in approaches used in the interpolation of well data, depending on the applied concept, is clearly shown.
Keywords: Latitudinal Pre-Ob; Vatiegan field; geological model; layers of AB group; channels cuts; correlation; facial specific features; sediments genesis; conceptual geological model.
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UDC 622.276.4 DOI: 10.30713/2413-5011-2020-5(341)-31-34
FORECASTING THE IMPACT METHODS APPLICATION ON
THE BV6 GROUP LAYERS
Vadim Evgenievich Andreev1,2, Dr. of tech. sci., Professor Aleksandr Petrovich Chizhov1,2, Cand. of tech. sci., Associate Professor Aleksandr Vyacheslavovich Chibisov1,2, Cand. of tech. sci., Associate Professor Vyacheslav Sharifullovich Mukhametshin3, Dr. of geol.-mineral. sci., Professor Renat Rustamovich Gazizov1,2 Shamil Grigorievich Mingulov3, Dr. of tech. sci., Professor
1Federal State Budgetary Educational Institution of Higher Education "Ufa State Petroleum Technological University" 1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation, e-mail: intnm@ya.ru; 4ap@list.ru; z077@mail.ru; gazizoff.renat@mail.ru
2Laboratory for Oil and Gas Research of the SASI "Institute of strategic research of the Republic of Bashkortostan" 129/3, October prosp., Ufa, 450075, Republic of Bashkortostan, Russian Federation
3Ufa State Petroleum Technological University, Branch of the University in the City of Oktyabrsky 54a, Devonskaya str., Oktyabrsky, 452607, Republic of Bashkortostan, Russian Federation, e-mail: vsh@of.ugntu.ru
The paper is devoted to the problems of improving the efficiency of the existing water-flooding systems. The results of laboratory and numerical experiments carried out to determine the impact on residual and hard-to-recover oil reserves treatment on the example of the Las-Yegan oilfield BV6 operational object are presented. Two technologies for water-flooding efficiency improvement – complex physical, chemical and gas impact – are proposed. The results of oil by water and water-gas mixtures displacement numerical simulation are presented. The magnitude of the operational object’s technological parameters changes is predicted.
Keywords: enhancement of oil recovery; geological-technological substantiation; physical-chemical water-flooding methods; water-gas impact modeling.
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UDC 622.276.63 DOI: 10.30713/2413-5011-2020-5(341)-35-39
SELECTION OF COMPLEX ACID TREATMENT COMPONENTS
OF CARBONATE RESERVOIRS
Alexander Valeryevich Nikitin, Pavel Valeryevich Roshchin, Cand. of tech. sci., Vladimir Nikolaevich Kozhin, Cand. of tech. sci., Sergey Valeryevich Demin, Ivan Ivanovich Kireev, Konstantin Vasilyevich Pchela, Alexander Tarasovich Litvin
LLC "SamaraNIPIneft" 18, Vilonovskaya str., Samara, 443010, Russian Federation, e-mail: RoschinPV@samnipi.rosneft.ru
Ivan Alexandrovich Struchkov, Cand. of tech. sci.,
LLC "Tyumen Petroleum Research Center" 42, Maxim Gorky str., Tyumen, 625048, Russian Federation.
The paper presents the laboratory test results of selecting the components reagent composition as well as substantiates their sequential injection when conducting complex acid treatment of a carbonate reservoir that contains heavy oil. The optimum composition of an acid mixture basis, namely the mixture of mineral and organic acids with the addition of surfactants was chosen for the conditions of the selected object. The low efficiency of a number of several traditionally used demulsifying agents, or its complete missing due to the formation of an acid composition emulsion with heavy oil. Based upon the results of the conducted experiments, the authors of the paper substantiated the necessity of preliminary boosting of the dissolving reagent rim directly prior to the injection of the acid composition when treating the well bottom zone to improve the contact between the active acid composition and the formation rock and to increase the efficiency of a well commissioning after this treatment. Based on the results of laboratory testing, the effective iron retaining additive and corrosion inhibitor have been successfully selected for the conditions of the selected reservoir.
Keywords: heavy oil; acid treatment; complications; stimulation of the inflow; hard-to-recover reserves; field development; complex impact.
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UDC 622.276.4 DOI: 10.30713/2413-5011-2020-5(341)-40-46
ANALYSIS OF EXPERIMENTAL AND INDUSTRIAL WORKS ON
RESTRUCTURED WATER
Rinat Raisovich Khuzin1, Dr. of tech. sci. Nikolay Nikolaevich Soloviev2, Dr. of geol.-mineral. sci. Dinar Albertovich Salikhov1, Vadim Evgenievich Andreev3,4, Dr. of tech. sci., Professor Gennadiy Semenovich Dubinskiy3,4, Cand. of tech. sci., Associate Professor Vyacheslav Sharifullovich Mukhametshin5, Dr. of geol.-mineral. sci., Professor
1LLC "Karbon-Oil" 25, Surgutskaya str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation, e-mail: karbon@tatais.ru; dinar_salikhov@mail.ru
2LLC "Gazprom VNIIGAZ" 20, b. 8, Staraya Basmannaya str., Moscow, 105066, Russian Federation, e-mail: N_Soloviev@vniigaz.gazprom.ru
3Federal State Budgetary Educational Institution of Higher Education "Ufa State Petroleum Technological University" 1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation, e-mail: intnm@ya.ru; e-mail: intnm-gsd@yandex.ru
4Laboratory for Oil and Gas Research of the SASI "Institute of strategic research of the Republic of Bashkortostan" 129/3, October prosp., Ufa, 450075, Republic of Bashkortostan, Russian Federation
5Ufa State Petroleum Technological University, Branch of the University in the City of Oktyabrsky 54a, Devonskaya str., Oktyabrsky, 452607, Republic of Bashkortostan, Russian Federation, e-mail: vsh@of.ugntu.ru
The article presents the results of laboratory and field tests the oil deposit treatment by the restructured water agent through the reservoir pressure maintenance system. Laboratory studies were carried out using core material of carbonate deposits, carbonate reservoir oil and water and the optimal agent composition for injection into the productive reservoir was selected. An increase in the displacement coefficient was obtained when conducting laboratory tests of restructured water. For the first time in a complex deposit with hard-to-recover reserves, the technology of oil displacement coefficient increasing by restructured water pumping into an oil deposit timed to the Bashkir tier was tested, and a positive result was obtained. It is proposed to add restructured water to the displacing agent injected into the formation to increase the Kdisp in the developed fields.
Keywords: restructured water; carbonates; reservoir pressure maintenance; displacement coefficient; oil recovery coefficient.
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UDC 622.24.026.3.001.5 DOI: 10.30713/2413-5011-2020-5(341)-47-51
REVIEW OF STUDIES OF ROCKS’ STRENGTH AND ELASTIC PROPERTIES ANISOTROPY (p. 47)
Maxim Evgenievich Koval’, Ilya Nikolaevich Lyapin
LLC "SamaraNIPIneft" 18, Vilonovskaya str., Samara, 443010, Russian Federation, e-mail: LyapinIN@samnipi.rosneft.ru
Vera Viktorovna Zhivaeva, Cand. of tech. sci., Sergey Dmitrievich Prokhorov, Alexey Alexandrovich Podyachev, Cand. of tech. sci., Pavel Nikolaevich Bukin
Samara State Technical University 244, Molodogvardeyskaya str., Samara, 443100, Russian Federation
The paper presents the review of the research information in the field of determination of the rocks’ strength and elastic properties from both russian and world sources. The analysis of the studies of rocks anisotropy influence on a well drilling and a wellbore stability is carried out. The bench installations of independent three-axis loading, which provide the possibility of applying a load over the entire face area of the sample and creating a uniform stress state and a measurement technique in it are considered.
Keywords: anisotropy of strength and elastic properties of rocks; stability of the wellbore; installations of independent three-axis loading.
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UDC 622.279:550.832.79 DOI: 10.30713/2413-5011-2020-5(341)-52-57
CONTROL OVER WATERING OF GAS WELLS BY THE UNIT
ELECTRICAL CONDUCTIVITY
Victor Sergeevich Permyakov1,2, Alexander Konstantinovich Manstein2, Dr. of tech. sci., Igor Nikolaevich Yeltsov2,3, Dr. of tech. sci., Professor, Natalia Viktorovna Yurkevich2,3, Cand. of geol.-mineral. sci., Associate Professor
1LLC "Gazprom dobycha Nadym" branch Engineering and Technical Center 1/1, Polyarnaya str., Yamalo-Nenets Autonomous Okrug, Nadym, 629730, Russian Federation, mail: Permiakov.VS@nadym-dobycha.gazprom.ru
2Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch Russian Academy of Sciences 3, Akad. Koptyuga ave., Novosibirsk, 630090, Russian Federation, e-mail: MansteinAK@ipgg.sbras.ru, YeltsovIN@ipgg.sbras.ru, YurkevichNV@ipgg.sbras.ru
3Novosibirsk State Technical University 20, K. Marx ave., Novosibirsk, 630073, Russian Federation.
The appearance of water, particularly formation water, into the perforated interval of a gas well contributes to the destruction of the near-well zone of the formation (sand production), reduced productivity and other undesirable consequences, therefore, it is crucial to identify the initial signs of well watering and carry out geological and technical measures aimed at improving its efficient and safe operation. Well watering is determined by hydrochemical control over the development of fields, its disadvantages – the use of outdated methods of manual sampling and determination of physical and chemical parameters of associated waters – do not allow to significantly increase the frequency of sampling and automate the control of well watering. The paper presents the results of theoretical and experimental research of the possibility of in-line detection of the unit electrical conductivity of associated water in a water-gas flow for the purpose of continuous monitoring of well watering. The article deals with the diagnosis of genesis of associated water by mineralization and a priori data on the absence of injection of technogenic water, accumulation and updating of the liquid phase sample of the water-gas flow, continuous measurement of electrical resistance and the influence of water-gas flow parameters on its value.
Keywords: control of well watering; gas well; unit electrical conductivity; water-gas flow; flow sampling of liquid; hydrochemical control; associated water; diagnostics of genesis of associated water.
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UDC 622.276 DOI: 10.30713/2413-5011-2020-5(341)-58-63
RESEARCH ON GELATION EFFECT AND PLUGGING
EXTENSIVE ZONES WITH HIGH
Na Risu, Vladimir Ivanovich Erofeev, Dr. of tech. sci., Professor, Liu Chen
National Research Tomsk Polytechnic University 30, Lenin Avenue, Tomsk, 634050, Russian Federation, e-mail: Narisu33@126.com
Lu Xiangguo, Dr. of tech. sci., Professor, Tian Zhongyuan
Northeast Petroleum University 199, Razvitiya str., Daqing, 163000, China, e-mail: 877459272@qq.com
Zhang Lidong
Tuha Oilfield Engineering and Technology Research Institute 67, Osvobozhdeniya str., Shanshan, 838202, China, e-mail: 1052287742@qq.com
Using rheological and filtration studies, the processes of gelation and pore blocking of highly permeable channels and extensive zones with high lateral permeability by grafted copolymers based on hydroxypropyl starch and acrylamide for reservoirs with high salinity of formation water. It was shown that at the beginning of polymerization, the graft copolymer of starch does not have a high initial viscosity, but after the gelation the copolymer reaches high strength, high pore blocking level of high permeable interlayers, resistance to acids and alkalis, which plays an important role in managing multilayer oil fields. Preferred compounds I have been determined, which have good compatibility with the pores and fluids of the reservoir of the Tuha oil field and have the high degree of blocking. Experiments on gelation in core showed that the preferred composition II has the best effect of gelation and a high level of blocking of high permeable pores.
Keywords: hydroxypropyl starch; graft copolymer of starch; gelation; high-salt reservoir; blocking level.
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UDC 550.83.003:658.011.12 DOI: 10.30713/2413-5011-2020-5(341)-64-69
THE INNER PLANNING TASKS OF GEOPHYSICAL
MANUFACTURING FIRMS Alexey Vasilievich Beloshitskiy, Cand. of econ. sci.
JSC "Bashneftegeofizika" 13, Lenin str., Ufa, 450077, Republic of Bashkortostan, Russian Federation, e-mail: bel@bngf.ru
The paper discuses some specific factors of oil-and-gas servicing industry functioning under modern conditions such as high level of technological competition, necessary balance between owners and management of the company. The common principles of production planning in conditions of open oil-and-gas service market divided by rank into corporate, enterprise and structural division plans; by operating scale of the tasks to be solved into conceptual, strategic and tactical plans; by duration – for short, average and long-term plans; by detailing – into the total, individual purpose and business-plans were defined. The key difference of the approaches to short or average planning such as absence or visa versa necessity to consider external changes was pointed out. A definition of a firm inner planning is determined as the best substantiation of production resources which guarantees reaching of the set business targets and its tasks that are most important for a modern geophysical company such flexibility, clarity, necessity, normativity, measuring and access are revealed. The practical methods that are applied to consider the risks in case of pessimistic, basic and optimistic scenarios when making business-plans were examined. The permanent planning method based on the mathematical model of consecutive approximation has been proposed to improve the operation management quality. The automatic permanent planning process based on consecutive approximation algorithm using appropriate software and qualified personnel of production planning and management has been described. The specific features of qualitative and quantitative planning methods and their practical application in geophysical servicing have been considered.
Keywords: firm inner planning; oil-and-gas servicing; technological competition; business-plan scenarios; external conditions; plan; risk consideration; permanent planning; mathematics model; consecutive approximation; qualitative and quantitative planning methods.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |