ISSN 2413-5011 Scientific-technical journal AND DEVELOPMENT OF OIL AND GAS FIELDS published since 1992 March 2018 ¹ 3 12 issues per year
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OIL AND GAS PROSPECTING |
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DEVELOPMENT OF OIL AND GAS FIELDS |
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Information on the articles |
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UDC 551.7:551.243.4+553.98(571.56) DOI: 10.30713/2413-5011-2018-3-4-14
SEISMIC-FACIES
CHARACTERISTICS
O.A. Smirnov1, A.S.
Nedosekin1, A.V. Lukashov1, I.A. Faryshova1,
A.R. Kurchikov2,
1 LLC "INGEOSERVIS"
2 A. Trofimuk Institute of Oil and Gas Geology and Geophysics, the West-Siberian branch, the Russian Academy of Sciences 56, Volodarsky, str., Tyumen, 625000, Russian Federation, e-mail: niigig@tmnsc.ru
3 "Tyumen Industrial University" (TIU) 38, Volodarsky, str., Tyumen, 625000, Russian Federation
4 LLC "Gazpromgeologorazvedka"
The article considers some models of sedimentation of the Parfenovsky horizon, developed by various researchers. The seismic-facies characteristic of P2 and P1 layers, which are part of the horizon and the basis of prediction of the reservoirs’ improved quality areas as zones for the optimal location of production drilling, are given.
Keywords: the Siberian platform; Angara-Lena stage; Kovykta field; the Parfenovsky horizon; sedimentation model; seismic facies.
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UDC 550.8.02:553.98:551.72 DOI: 10.30713/2413-5011-2018-3-14-25
FACIAL
ZONING OF THE VENDIAN PRODUCTIVE DEPOSITS
Marina Yurievna Kolotovkina
LLC "Irkutsk Oil Company" 4, Bolshoy Liteiny prosp., Irkutsk, 664000, Russian Federation, e-mail: Kolotovkinamarina@yandex.ru
Facies-paleogeographic reconstruction of the productive deposits of the Yaraktinsky horizon of the same-name field is made, based on the results of wells geophysical survey, a detailed macroscopic study of borehole cores, quantitative petrographic and particle size analysis. It is revealed that the Yaraktinsky horizon has a clearly expressed cyclite structure; three packs are allocated in the section. It is found that the Yaraktinsky horizon deposits were accumulated in the transient (delta) conditions. The effect of rocks post-sedimentary changes on their reservoir characteristics formation is determined. It is shown that the data of a comparative analysis of "results of laboratory tests of the core – facial affiliation" are in good agreement.
Keywords: facies; delta; upper deltaic floodplain; tidal channel; natural levee; permeability; curves of capillary pressure; the Yaraktinsky horizon; Yaraktinskoe field.
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UDC 550.98(470.43) DOI: 10.30713/2413-5011-2018-3-26-33
UPDATING
OF THE GEOLOGICAL STRUCTURE OF REEF FORMATIONS
V.A. Kolesnikov, K.S. Reytyukhov
LLC "SamaraNIPIneft" 18, Vilonovskaya str., Samara, 443010, Russian Federation, å-mail: KolesnikovVA@samnipineft.ru, ReytyukhovKS@samnipineft.ru
S.P. Papukhin
JSC "Samaraneftegaz" 50, Volzhsky prosp., Oktyabrsky region, Samara, 443071, Russian Federation, å-mail: PapukhinSP@samng.rosneft.ru
The article is devoted to the zoning prediction, the purpose of which is to allocate territorially limited sites and their ranking according to the degree of prospects. At this level of prediction, all criteria should be used to judge the potential of the territory under study: lithologic-paleogeographic, tectonic, paleo-geomorphological, geochemical, hydrogeological and other indicators. Recently, at the territory of Samara-Volga Region the results of geological exploration work have been received. These works prove the presence of single reef-type structures of the Upper Devonian-Carboniferous age in the axial depression zone of the Kama-Kinel system of troughs.
Keywords: zoning prediction; reef formations; system of troughs.
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UDC 552.578.2.061.32 DOI: 10.30713/2413-5011-2018-3-33-37
CHARACTERISTIC
OF GENERATING-ACCUMULATING HYDROCARBON SYSTEMS
Tatyana Vladimirovna Karaseva1,
2,
1 Perm State National Research University 15, Bukirev str., Perm, 614990, Russian Federation, e-mail: geotech@pstu.ru, tvkaras@psu.ru
2 JSC "KamNIIKIGS" 15, Krasnoflotskaya str., Perm, 614016, Russian Federation, e-mail: info@niikigs.ru, bgl@niikigs.ru
Based on the studied ultradeep wells sections – Tyumen SG-6 well (7502 m) and En-Yakha SG-7 well (8250 m) – drilled in the north of the Western Siberia, it is established that below the depth of 3,5 km oil and gas source rocks and suites (formations) are widely spread in the sedimentary rocks up to the depth of 6,5 km. Three oil and gas source suites likely of a regional spreading were identified below 3,5 km, they are – Pur, Tyumen and Bazhenov suits. The most thoroughly considered is Pur suite, which is the deepest one and the only one that is opened by ultradeep wells only. The suite is spread in Middle Triassic sediments, enriched by humus-type organic matter and entering the final stage of the gas window, generating mostly methane. Gas generation processes in Pur suite were confirmed by the results of the well tests and by complete realization of oil potential. Above Pur suite, in the sandstones of the stratigraphic Vityutin suite, a destroyed oil deposit was identified by the high presence of pyrobitumen. The Tyumen oil-gas source suite is enriched by III-type organic matter as well. It was entering the initial stage of the gas window in Tyumen SG-6 well section and only the main oil window in En-Yakha SG-7 well section. Gas manifestations are associated with it in Tyumen SG-6 well section and in En-Yakha well section – an oil deposit in the upper part of Tyumen stratigraphic suite. Bazhenov suite in the sections of both wells is characterized by a higher content of II-type organic matter and was entering the main zone of oil window. In addition to the three oil-gas source suites described above, which are likely of regional spreading, there detected oil-gas source suits of zoning or local spreading. The largest number of them was recorded in Tyumen SG-6 well section. Based on the results of the studies, a conclusion is made on the wide development of generation-accumulation systems of different levels in the depths in the north of the Western Siberia, which could affect the oil and gas potential in the usual depths.
Key words: source rocks; main gas window; main oil window; catagenesis; vitrinite; pyrolysis; hydrocarbons.
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UDC 550.8.053+550.8.08+608.2+552.52+552.08 DOI: 10.30713/2413-5011-2018-3-38-43
APPLICATION OF SYNCHRONOUS THERMAL ANALYSIS METHOD
Anton Vasilievich Glotov, Sergei Valerievich Parnachev
JSC "Tomsk NIPIneft" 72, Mir prosp., Tomsk, 634027, Russian Federation, tel.: (382) 261-19-76, (382) 272-71-30, e-mail: GlotovAV@tomsknipi.ru, ParnachevSV@tomsknipi.ru
The article describes application of the method of the synchronous thermal analysis to determine the rock samples’ reservoir properties of Bazhenov suite characterized by a wide range of katagenetic conversion of organic matter. The results of the efficiency evaluation of preparation of open porous space that is to be studied by the method of extraction by organic solvents, carried out by the combination of the synchronous thermal analysis and mass spectroscopy. The carried-out comparative analysis of the results of the open porosity evaluation, received by traditional methods application (for liquid, gas, different geometry samples, shredded samples) and using the synchronous thermal analysis, proves the fact of the existing tendency of the open porosity value underestimation by traditional methods of studying due to incomplete cleaning of the open porosity space from formation fluids.
Keywords: Bazenov suite; synchronous thermal analysis; open porosity; mass spectroscopy; extraction; pyrolysis; geo-monomer; geopolymer; core.
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UDC 553.98+550.812 DOI: 10.30713/2413-5011-2018-3-43-51
PROSPECTS
OF THE OIL AND GAS POTENTIAL
Yury Vyacheslalovich Kuranov, Vadim Foatovich Sharafutdinov
LLC "LUKOIL–Engineering" 3, bld. 1, Pokrovsky boulevard, Moscow, 109028, Russian Federation, e-mail: yvkuranov@yandex.ru, vsharaf@inbox.ru
Anatoly Andreevich Yaroshenko
e-mail: yarosh43@mail.ru
Andrey Vasilievich Bembeev
LCC MPK "ChemServiceEngineering" 14, bld. 2, Nametkin str., Moscow, 117420, Russian Federation, e-mail: geologkn@mail.ru
Vasily Andreevich Bembeev
Stavropol Department of Emergency and Recovery operations and Workover, a branch of LCC "Gazprom Underground Gas Storage" 7, Promyshlennaya str., Vyazniki khutor, 356200, Shpakovsky district, Stavropol region, Russian Federation, e-mail: bembeevv@gmail.com
Hydrocarbon potential of the Permian-Triassic deposits of Manych troughs, located in the junction areas of Stavropol region, Republics of Kalmykia and Dagestan has lately become of great interest of many researchers. The significant part of hydrocarbon commercial accumulations of the Permian-Triassic oil- and gas-bearing complex of the Eastern Pre-Caucasus is identified in the deposits of Neftekumsk suite. The oil commercial inflows (including those of high oil production rates up to 250 tons per day) are identified in some areas of the Dagestan Republic and the Eastern Stavropol region. The authors of the article analyzed the history of exploration in the Eastern Pre-Caucasus and revealed a complex of problems, that explain the low efficiency of prospecting for new hydrocarbon deposits in Neftekumsk suite during the previous years. Based on the latest geological-geophysical data, understanding of the geological structure and hydrocarbon potential prospects of Neftekumsk suite territory in the south of Kalmykia, where Neftekumsk suite deposits are the least studied, are updated. The results of the research helped to identify the most prospective areas in Neftekumsk suite deposits and to give recommendations on exploration efficiency enhancement in future.
Keywords: oil and gas potential; geological exploration work; Eastern Pre-Caucasus; East-Manych trough; Republic of Kalmykia; the Permian-Triassic deposits; Neftekumsk suite; reef.
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UDC 622.276.6 DOI: 10.30713/2413-5011-2018-3-52-57
EVALUATION
OF THE EFFICIENCY OF A FORMATION HYDRAULIC FRACTURING
R.Z. Nurgaliev, I.R. Mukhliev
Almetyevsk State Petroleum Institute 2, Lenin str., Almetyevsk, 423450, Republic of Tatarstan, Russian Federation, tel.: (855) 331-00-24, e-mail: agni-nich@mail.ru, dn_ro@tatneft.ru
N.I. Khisamutdinov, I.Sh. Shchekaturova, A.A. Rakhmatullin
LLC NPO "Neftegaztekhnologia" 96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation, tel.: (347) 228-18-75, å-mail: npo@ngt.ru, srgngt@mail.ru, shchekaturova_ish@npongt.ru, rakhmatullin_aa@npongt.ru
The article compares the efficiency of a formation hydraulic fracturing in the injection wells of layers D0 and D1 formations of Alkeevskaya area. When choosing the wells-candidates to be subjected to a formation hydraulic fracturing, it is necessary to take into account the value of the coverage factor as well as the degree of the selection compensation at the site. It is established that hydraulic fracturing of the formation in injection wells of the D1 formation is characterized by a stronger impact on the reacting wells drainage of the site with production growth rates equal to the production wells due to the introduction of previously undrained stocks.
Keywords: hydraulic fracturing; injection well; reacting well; additional production.
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UDC 622.276 DOI: 10.30713/2413-5011-2018-3-58-62
THE
METHOD OF REGULATION OF OIL RESERVES DRAINAGE
N.I. Khisamutdinov, A.A. Makhmutov, I.Sh. Shchekaturova
LLC "NPO "Neftegaztekhnologia" 96/2, Revolutsionnaya str., Ufa, 450078, Republic of Bashkortostan, Russian Federation, e-mail: npo@ngt.ru, srgngt@mail.ru, makhmutov_aa@npongt.ru, shchekaturova_ish@npongt.ru
A.G. Habibrahmanov
"Elkhovneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin 33, Tukay str., Almetyevsk, 423400, Republic of Tatarstan, Russian Federation, e-mail: elhov_peo@tatneft.ru
I.R. Mukhliev
"Jalilneft" Oil and Gas Production Department, PJSC "Tatneft" named after V.D. Shashin 2, Lenin str., Jalil-city, 423400, Republic of Tatarstan, Russian Federation, e-mail: jalil@tatneft.ru, dn_geo@tatneft.ru
The article proposes a method to control the direction of artificially created cracks after hydraulic fracturing of a reservoir, based on the results of complex processing of field data and wells hydrodynamic studies, a coherent analysis technique of a site of D1 formation of Alkeevskaya area. Comparison of the methodological assessment results of the cracks direction before and after the hydraulic fracturing allowed to reveal the changes in the direction of the predominant fracturing of the formation site, causing the redirection of the main drainage streams, the creation and (or) strengthening of connectivity between the sampling points and injection sites.
Keywords: pressure recovery curve; hydraulic fracturing of a formation; crack; wells interaction.
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UDC 622.276.1/.4:55(470.53) DOI: 10.30713/2413-5011-2018-3-63-68
CLUSTERING
OF THE WESTERN SIBERIA JURASSIC DEPOSITS
Vyacheslav Vyacheslavovich Mukhametshin
Federal State Budgetary Educational Institution of Higher Education "Ufa State Petroleum Technological University" 1, Kosmonavtov str., Ufa, 450062, Republic of Bashkortostan, Russian Federation, e-mail: vv@of.ugntu.ru
Using the factor analysis methods, clustering of the Jurassic age objects of the oil and gas bearing complex, which have been under development for a long time, is carried out. The identical groups of objects united into relatively homogeneous reservoirs by the geological-physical parameters of formations and fluids, which have a predominant effect on the process of reserves extraction and used when calculating the reserves and the development projection, are identified. An algorithm is proposed that allows identifying the oil deposits, that are newly put into operation, with the deposits that have been in development for a long time in order to use their operational experience to improve the technical-economic indicators of the objects that are to be put into development.
Keywords: the Jurassic age objects of oil and gas complex; clustering; identification; intensification of putting into operation.
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UDC 622.276 DOI: 10.30713/2413-5011-2018-3-69-71
USE OF
THE INFORMATION ON A FORMATION–WELL SYSTEM FLUCTUATIONS
S.V. Abbasova
Azerbaijan State Oil and Industry University 34, Azadlyg prosp., Baku, AZ1010, Republic of Azerbaijan, e-mail: abbasovasamira@mail.ru
The paper analyzes the processes of changing the technological indicators of wells operation in oil and gas fields using the Theil criteria. It is established that along with other methods the Theil criteria application to analyze oil and gas fields operational indicators allows to determine the current state of the reservoir system and to diagnose the time of transitional processes of development both the deposit in the whole and its sites, thus providing making timely decisions on oil production control through regulation of technological operating modes of producing and injection wells.
Keywords: oil and gas field; development; analysis; stages; wells; production rate; fluctuation; the Theil criteria.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |