ISSN 2413-5011 Scientific-technical journal AND DEVELOPMENT OF OIL AND GAS FIELDS published since 1992 September 2017 ą 9 12 issues per year
CONTENŇS |
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OIL AND GAS PROSPECTING |
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GEOLOGICAL MODELING |
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RESEARCH OF FORMATIONS AND WELLS |
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DRILLING AND CONSTRUCTION OF THE WELLS |
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DEVELOPMENT OF OIL AND GAS FIELDS |
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METHODS OF RAISING OIL RECOVER |
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Information on the articles (p. 95‑101) |
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Information on the articles |
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IDENTIFICATION OF ZONAL
CLAY CAP ROCKS
Druchin Vitaliy Sergeevich, Khasanov Rishat Nurgayanovich, Shalamova Valentina Ilinichna, Osipenko Andrey Stanislavovich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-52-73, 54-52-76, e-mail: DruchinVS@tmn.lukoil.com, KhasanovRN@tmn.lukoil.com, ShalamovaVI@tmn.lukoil.com, OsipenkoAS@tmn.lukoil.com
When geometrizing oil deposits in the deposits of Imilor field, to calculate the reserves amount, planning of geological exploration and operational drilling, considerable attention was paid to not only tracing the permeable reservoirs, but also to studying the parameters that control their oil potential. One of these parameters in Imilor field is presence of a clay cap rock that is consistent in properties and thickness above the reservoir. Based on the reserves calculation information, production drilling and the data interpretation of 3D seismic survey, a variant of the productive reservoirs geometrization is proposed by tracing of the aged clay strata that control the oil deposits. The obtained "prognostic" model for Ach4 layer allows to see its oil potential prospects and to submit proposals for its additional study.
Keywords: oil; deposit; collector; cap rock; trial operation; correlation; forecasts based on seismic survey information; replacement zone; lenticular structure; clinoform; Achimov stratum.
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DETECTION OF PERSPECTIVE
DEPOSITS
Saetgaleev Yagfar Halitovich, Shayhutdinova Gulnara Hanasovna, Kolpakov Vitaliy Vitalievich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 19/17, Central str., Kogalym, 628483, Russian Federation, tel.: (3466) 76-29-40, 76-00-45, e-mail: SaetgaleevYH@tmn.lukoil.com, ShayhutdinovaGH@tmn.lukoil.com, KolpakovVV@tmn.lukoil.com
The problems of combining of different lithological types of Bazhenov suite rocks to identify and study promising areas to be subjected to geological exploration work are considered. To solve the problem, the statistical method of correlation-regression analysis was applied, which made it possible to evaluate the tightness of the connection between lithological-petrophysical parameters and to reveal additional indicators of statistical properties homogeneity of Bazhenov suite rocks’ lithological types to group them into isolated lithological-technological types.
Keywords: Bazhenov suite; lithological-petrophysical parameters; assessment of the connection tightness; lithological-technological types; prospective areas.
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SECONDARY
TRANSFORMATIONS OF COLLECTORS
Halyapin Sergey Vladimirovich, Livaev Ravil Zulfirovich, Kolnogorova Olga Vladimirovna
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-52-73, 54-52-76, e-mail: HalyapinSV@tmn.lukoil.com, LivaevRZ@tmn.lukoil.com, KolnogorovaOV@tmn.lukoil.com
A conceptual model of the oil deposit of Ust-Kotukhtinsky BV88 formation is proposed. The oil potential distribution is associated with the reservoirs secondary transformations during filling of the trap by hydrocarbons, that led to the reservoir sealing. The accepted concept of the structure is confirmed by the results of core research, the work of producing wells and the data of tracer studies.
Keywords: oil; sealed deposits; secondary transformations of collectors; carbonate cement; core research; lithological screening; porosity; permeability.
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SOME ASPECTS OF JOINT
MODELING OF ACHIMOV STRATA DEPOSITS
Grishkevich Vladimir Filippovich, Kasatkin Viktor Egorovich, Lagutina Svetlana Vladimirovna, Moskalenko Natalia Yurievna, Smolyakov Gennady Anatolievich, Panina Elena Vladimirovna, Laptey Anastasia Germanovna, Toropov Eduard Sergeevich, Starikov Vladimir Sergeevich, Horoshev Nikolay Grigorievich, Blinkova Anna Viktorovna, Chernoskulova Valeria Antonovna
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-53-47, 54-53-49, 54-53-46, 54-53-24, 54-53-18, 54-53-48, 54-53-71, e-mail: GrishkevichVF@tmn.lukoil.com, KasatkinVE@tmn.lukoil.com, LagutinaSV@tmn.lukoil.com, MoskalenkoNY@tmn.lukoil.com, SmolyakovGA@tmn.lukoil.com, PaninaEV@tmn.lukoil.com, LapteyAG@tmn.lukoil.com, ToropovES@tmn.lukoil.com, StarikovVS@tmn.lukoil.com, HoroshevNG@tmn.lukoil.com, BlinkovaAV@tmn.lukoil.com, ChernoskulovaVA@tmn.lukoil.com
Until now, the attempts to fundamentally challenge the clinoform model of the Neocomian deposits structure of the West Siberian oil and gas basin have not ceased. The authors of the present article show that the concept of sediments gravitational migration on a sedimentary slope can serve the basis for joint modeling of Achimov deposits and Bazhenov suite anomalous sections. To substantiate the argument, photos of the collectors and tires cores, having plastic deformation of displacement or a typical shape of landslide breccia (debris), their position is considered in a section. By enlarged stratigraphic objects (shelf, Achimov stratum, anomalous section of Bazhenov suite, Vasyuganskaya suite), carbonate content is estimated on core and well log interpretation data. When analyzing Bazhenov suite anomalous section, the landslide hypothesis is used and the original geo-mechanical model of its formation, developed by the authors, are used. The landslide model of Bazhenov suite anomalous section is justified by the new bio-stratigraphic studies. The problems of prediction of reservoir properties and deposits geometrization at the junction of classical Achimov deposits and their extensions like bodies of the introduction of Bazhenov suite anomalous sections are considered from the standpoint of geochemical specific features of lithogenesis.
Keywords: anomalous sections of Bazhenov suite; Achimov stratum; modeling; clinoform complex; sedimentary slope; turbidites; debris flow; landslide; litho-genesis; carbonatization.
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HYDRODYNAMIC MODEL
CONSTRUCTION
Shalamova Valentina Ilinichna, Vershinina Irina Viktorovna, Kovalenko Marina Alexandrovna, Snytko Natalia Nikolaevna
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-50-99, 54-50-22, 54-51-98, 54-53-63, e-mail: ShalamovaVI@tmn.lukoil.com, VershininaIV@tmn.lukoil.com, KovalenkoMA@tmn.lukoil.com, SnytkoNN@tmn.lukoil.com
The article considers the texture heterogeneity influence of Achimov deposits on the reservoirs fluid saturation along the section, with account of the core emission intensity in the ultraviolet light, the filtration properties and the results of the formation tests. During hydrodynamic modeling, the variant of heterogeneous fluid saturation at the height of the deposit corresponding to the saturation maximum zone is analyzed, since anhydrous inflows occur in such intervals during testing, and after a formation hydraulic fracturing the products water-flooding increases and does not decrease significantly over time. The water-saturated interlayers in this section have the characteristics approximating the permeability maximum values of, and are conditionally designated as "siltstones". Three variants of hydrodynamic models of Ach4–Ach6 deposits are considered: without account of the "siltstones", with account of the latter inside a formation and as an aquifer by Carter–Tracy. The model variant with account of "siltstones" inside the formation has the maximum convergence with the fact and is recommended for use.
Keywords: texture of rocks; permeability; "spotted" oil saturation; hydrodynamic modeling.
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POSSIBILITIES OF GIS
STANDARD METHODS APPLICATION
Moskalenko Natalia Yurievna, Gilmanova Natalia Vyacheslavovna, Boronin Pavel Alexandrovich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-53-24, 54-50-46, e-mail: MoskalenkoNY@tmn.lukoil.com, GilmanovaNV@tmn.lukoil.com, BoroninPA@tmn.lukoil.com
The conditions of the Neocomian and Jurassic deposits formation in Imilor-Istochy subsoil section caused the development of layered texturally-heterogeneous reservoirs in the wells section along with homogeneous (massive) reservoirs. The article deals with the possible application of the standard methods of GIS compulsory complex when identifying the thin-layered interlayers of reservoirs and when determining their calculation parameters. The collectors identified thicknesses of interlayers at the level of 0,2…0,6 m are confirmed by core images comparison in the day and ultraviolet light, as well as by well work data after the formation hydraulic fracturing. The two approaches comparison of the determination of porosity and oil saturation coefficients is made, with account of the coefficient of the layered clay content and without it. The reliability estimation is carried out by direct comparisons with the core data for the maximum saturation zone. The most optimal approach is proved when interpreting thin-layered reservoirs with texture heterogeneity within the first tens of centimeters.
Keywords: homogeneous collector; layered collector; coefficient of layered clay content; effective thicknesses; intervals of a layered collector members.
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THE RESULTS OF 1D
GEOMECHANICAL MODELING APPLICATION
Malyutin Dmitry Vladimirovich, Bakirov Daniyar Lyabipovich, Babushkin Eduard Valerievich, Svyatukhov Denis Sergeevich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-53-22, 54-51-69, 54-51-70, 54-54-46, e-mail: MalyutinDV@tmn.lukoil.com, BakirovDL@tmn.lukoil.com, BabushkinEV@tmn.lukoil.com, SvyatuhovDS@tmn.lukoil.com
Geo-mechanical modeling is one of the necessary instruments when designing wells, which reduces possible risks while drilling exploration production wells and sidetracks. The 1D geo-mechanical modeling is used by "KogalymNIPIneft" both for planning drilling in difficult geological conditions, and for analyzing the complications during the construction of wells, the development of measures to prevent them.
Keywords: geo-mechanical 1D modeling; stability of a wellbore; abnormally low formation pressure (ALFP).
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TECHNICAL-TECHNOLOGICAL
SOLUTIONS TO ENHANCE
Fattakhov Marcel Masalimovich, Bakirov Daniyar Lyabipovich, Bondarenko Leonid Sergeevich, Malyutin Dmitry Vladimirovich, Vityaz Alexey Valerievich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-53-82, 54-51-70, 54-53-22, e-mail: Fattahovmm@tmn.lukoil.com, BakirovDL@tmn.lukoil.com, BondarenkoLS@tmn.lukoil.com, MalyutinDV@tmn.lukoil.com, VityazAV@tmn.lukoil.com
The article is devoted to the problems of multilateral wells construction at the fields of LLC "LUKOIL–Western Siberia". Some technical and technological solutions are proposed to enhance the efficiency of "complicatedly"-profiled wells drilling. Based on specific geological and technological conditions, it is possible to combine technologies both among themselves and with other ones. At present, the construction of wells with three or more bottom zones at the fields of LLC "LUKOIL–Western Siberia" is industrially implemented.
Keywords: multilateral wells; cutting-off technology; wells with a "complex" profile; type of drilling fluid; permeability of a reservoir.
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MODELING OF WELL
OPERATION INDICATORS
Kordik Kirill Evgenievich, Shkandratov Viktor Vladimirovich, Bortnikov Alexander Egorovich, Ryasnyi Alexander Gennadievich,
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-53-21, 54-51-33, 54-54-10, 54-50-89, e-mail: KordikKE@tmn.lukoil.com, ShkandratovVV@tmn.lukoil.com, BortnikovAE@tmn.lukoil.com, RyasnyiAG@tmn.lukoil.com
Leontyev Sergey Alexandrovich
Tyumen Industrial University e-mail: serg_leontyev@mail.ru
The paper presents the results of hydrodynamic calculations of well operational parameters, provided that the bottom-hole pressure (Pbhp) is lower than the gas saturation pressure (Psat) and, consequently, the release of free gas in the formation bottom-hole zone (FBZ). The value of the oil gas factor (Gf) is simulated with account of the change of the well operating mode. Due to the model "local grinding of the cells" (LGR function), the radius of the oil degassing zone in the FZP is determined depending on the dynamics of the pressure at the well bottom zone, trends in the oil viscosity and density change in reservoir conditions, oil and gas saturation of the formation are revealed.
Keywords: oil gas factor; sector model; local grinding of cells; pressure of oil saturation by gas; bottom-hole pressure; man-made gas cap; viscosity and density of oil in reservoir conditions; oil and gas saturation of a formation.
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IMPLEMENTATION OF PERSPECTIVE
TECHNOLOGICAL SOLUTIONS
Buharov Alexander Valeryevich, Sentsov Alexey Yurievich, Rodionov Anton Vladimirovich, Astafiev Dmitriy Anatolievich, Malshakov Evgeny Nikolaevich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-50-59, 54-53-90, 54-51-24, 54-51-62, 54-51-14, e-mail: BuharovAV@tmn.lukoil.com, SentsovAY@tmn.lukoil.com, RodionovAV@tmn.lukoil.com, AstafevDA@tmn.lukoil.com, MalshakovEN@tmn.lukoil.com
The paper considers the problems of inflow stimulation in horizontal wells. The technology of a two-stage hydraulic fracturing, providing increase a formation fracture coverage by means of a hydraulic fracturing preventing the risks of a breakthrough into the overlying layer. is proposed for implementation. The results of application of a two-stage hydraulic fracturing are considered, recommendations on further application of this technology are developed.
Keywords: two-stage hydraulic fracturing of a formation; multi-stage hydraulic fracturing (MSHF) of a formation; horizontal wells; inflow stimulation; micro-seismic monitoring.
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GENERALIZATION OF
WATER-GAS EFFECT RESULTS
Shkandratov Viktor Vladimirovich, Demyanenko Nikolay Alexandrovich, Astafiev Dmitry Anatolyevich, Malshakov Evgeny Nikolayevich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-51-31, 54-53-76, 54-51-62, 54-51-14, e-mail: ShkandratovVV@tmn.lukoil.com, DemyanenkoNA@tmn.lukoil.com, AstafevDA@tmn.lukoil.com, MalshakovEN@tmn.lukoil.com
The results of pilot industrial works on water-gas effects with the purpose of increasing oil recovery, carried out at two sites of Vostochno-Perevalnoe field are generalized. It is shown that both the geological specific features of the objects and the technology of the effect implementation significantly influence the efficiency of the water-gas impact. To achieve high efficiency, continuous monitoring and operational management of the process are necessary.
Keywords: water-gas impact on a reservoir; gas repression; oil recovery enhancement; filtration heterogeneity; permeability; low-permeable layers; injection well; cycles of water and gas injection; volume of water and gas rims.
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INTEGRATED APPROACH TO
THE IMPLEMENTATION OF METHODS THAT
Horyushin Vadim Yurievich, Korotenko Andrey Sergeevich, Mazitov Ruslan Faritovich, Barmin Alexander Vyacheslavovich
"KogalymNIPIneft", the branch of LLC "LUKOIL–Engineering" in the city of Tyumen 143a, Respublika str., Tyumen, 625000, Russian Federation, tel.: (3452) 54-50-21, 54-51-61, e-mail: HoryushinVY@tmn.lukoil.com, KorotenkoAS@tmn.lukoil.com, MazitovRuF@tmn.lukoil.com, BarminAV@tmn.lukoil.com
The paper considers AB1-2 object of Kechimovsky field, its run ahead depletion is revealed. Facies of channel sediments to be subjected to geological-technical measures with the aim of involving the unused intervals in the development are revealed. Particularly, the results of the massive application of chemical methods for enhanced oil recovery are discussed.
Keywords: oil; chemical methods of enhanced oil recovery; massive application; channel sediments; Kechimovsky field; uneven production.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |