ISSN 0234-1581 Scientific-technical journal AND DEVELOPMENT OF OIL AND GAS FIELDS published since 1992 January 2015 ¹ 1 12 issues per year
CONTENÒS |
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OIL AND GAS PROSPECTING |
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GEOCHEMICAL RESEARCH WORK |
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DEVELOPMENT OF OIL AND GAS FIELDS |
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THEORETICAL ASPECTS IN GEOLOGY |
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Shaldybin M.V. "Clay" in sandstone: origin, composition, evolution (review of foreign articles) (p. 58-68) |
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Information on the articles (p. 69-73) |
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Information on the articles |
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RECONCEPTUALIZATION OF GEOLOGICAL STRUCTURE OF COMPLETELY-COMPOSED OKSKIAN DEPOSITS OF VOLGO-URAL OIL- AND GAS-BEARING PROVINCE (ð. 4)
Nemirovich T.G. , Vilesov A.P. , Butolina Yu.A.
"Tyumen Oil Scientific Center, Ltd." ("TNNC, Ltd.") 42, M. Gorky str., 625048, Tyumen, Russian Federation, tel./fax: (345) 279-27-81
Starukhin L.S.
JSC "Orenburgneft" 2, Magistralnaya str., 461040, Buzuluk, Orenburg region, Russian Federation, tel.: (353) 237-54-02, fax: (353) 237-52-68
At present probability of discovering new high-output oil deposits in Orenburg is very small. Therefore, the resource base perfection reduces to identification of prospective geological objects previously understudied, but high-quality core development changed the idea of the potential of the latter ones. The article shows the errors while effective thicknesses allocation in carbonate reservoirs of sulfate-carbonate formation. Reduction of risks and uncertainty corridor in the assessment of geological oil resources can be achieved by deep study of core and use of extended GIS complex.
Key words: Okskian super-horizon; sulfate-carbonate formation; natural radioactivity of rocks; effective thicknesses; deep mineralogical studies.
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UDC 550.84.093:[(552.14+553.22):(553.98:551.762.1/762.2)](571.1)
MINERALOGICAL AND GEOCHEMICAL ANOMALIES AS INDICATORS OF THE FLUID-DINAMIC PROCESSES IN THE JURASSIC OIL- AND GAS-BEARING DEPOSITS OF THE WESTERN SIBERIAN PLATE (ð. 11)
Predtechenskaya Elena Andreevna
67, Krasny prosp., 630091, Novosibirsk, Russian Federation, tel.: (383) 221-15-96, e-mail: predel@sniiggims.ru
Zlobina Olga Nikolaevna, Burleva Olga Vasilievna
Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences 3, Academician Koptyug prosp., 630091, Novosibirsk, Russian Federation, tel.: (383) 333-23-03, e-mail: Zlobina@ipgg.sbras.ru, burleva@ipgg.sbras.ru
At a number of fields, located in the Western Siberia, improved-quality reservoirs tend to linear zones with increased permeability accompanied by litho-mineralogical, catagenetic and hydro-geochemical anomalies. These areas are well traced in regional geological-seismic profiles. The anomalies formation is related to fluid migration through long-lived deep faults that penetrated from the basement to various levels of the Jurassic sedimentary cover. The authors of the present article compiled a set of regional maps of mineralogical and hydro-chemical anomalies of the Low-Middle Jurassic horizons of sandy sedimentation in the Western Siberian sedimentary mega-basin. The maps show confinement of the main litho-mineralogical catagenetic and hydro-geochemical anomalies to deep fault zones and their intersections. Vertical amplitude of the revealed anomalies development reflects the levels of hydrothermal solution penetration into the Jurassic sedimentary cover along the deep faults zones and tectonic fracturing. The data obtained may be used for prediction of areas with improved reservoir. Rocks with higher concentrations of trace elements are detected in the Upper Jurassic clayish bituminous deposits of the Bazhenov horizon. It was established that high-carbon deposits formed in depressions and on the slopes of the seamounts and are not always found in the anoxic zone. In addition, direct correlation between organic hydrocarbon content and concentrations of some trace elements in the rocks of Bazhenov horizon is often missing. It is assumed, that the favorable conditions for the burial of organic material and the formation of oil source high-carbon clay and clay-siliceous sediments in the Bazhenov basin could also occur in the areas of gas-thermal fluids seepage.
Key words: Western Siberia; Jurassic deposits; Bazhenov horizon; mineralogical and geochemical anomalies; petroleum potential.
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DETERMINATION OF LITHOLOGICAL WELL PROFILE AND OIL CONTENT OF FLUSH LIQUID DURING WELL DRILLING (ð. 24)
Moiseenko Anatoliy Sergeevich, Egorova Irina Valentinovna, Stupak Igor Sergeevich
Gubkin Russian State University of Oil and Gas 65, Leninsky prosp., 119991, Moscow, Russian Federation, tel.: (499) 135-71-56, e-mail: igor.stupak@gmail.com
The article describes the grounds of the infrared spectroscopy method. An overview of the types of laboratory infrared equipment is given. The advantages of field infrared equipment for studies of wells lithological profile and oil content of flush liquid are shown. Various types of field equipment are discussed and the results of studies using this equipment are presented.
Key words: infrared spectroscopy; well lithological profile; oil content of flush liquid; well drilling; information-measuring system; automation.
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STRUCTURAL-TECTONIC COMPOSITION OF GATCHINSKY UNDERGROUND GAS STORAGE FACILITY AND ADJACENT TERRITORIES (ON THE BASIS OF GAS-GEOCHEMICAL DATA AND SPECIFIED ABSOLUTE MARKS OF THE COVER OF THE FIRST GDOVSKIAN HORIZON) (ð. 30)
Plotnikov V.L.
"Gazprom georesurs, Ltd." 37/2, room 56, Vernadsky prosp., 119415, Moscow, Russian Federation, e-mail: mosgeokip@mail.ru
Smirnov V.V. , Trufanova S.F. Storchak O.V.
"Gazprom georesurs, Ltd.", "Mosgazgeofizika" Project Company Ramenskoe-city, Central Post Office, POB 1335, Moscow region, Russian Federation
The present article suggests some variant of the structural-tectonic composition of Gatchinsky underground gas storage facility (UGS) and adjacent territories, based on a large amount of factual well logging data to clarify the absolute elevations and to building a structure map, as well as data of hydrocarbon and non-hydrocarbon gases for "desjuctive" violations, definition of gas-water contact (GVC), leaks and gas accumulations. "Desjuctive" violations of the north-eastern direction form the "steps", immersed in the south-eastern direction. Five "steps" are allocated. The fourth "step" is Gatchinsky structure, complicated by five blocks.
Key words: underground gas storage (UGS); gas-geochemical method; tectonic fault.
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ON-LAND GEOCHEMICAL RESEARCHES WITHIN THE BOUNDARIES OF VOLGOGRADKY POVOLZHYE REGION (ð. 32)
Bondarev V.L., Gudzenko V.T., Mirotvorsky M.Yu., Zvereva V.B.
CJSC "Geochemistry" Research Production Center 5, Bolshoy Eldoradovsky per., 125167, Moscow, Russian Federation, tel.: (495) 685-12-80
The results of a set of on-land geochemical surveys (by the slurry of wells of 1,5 m deep and by concentration of subsurface air on a sorbent), conducted by CJSC "Geochemistry Research Production Center" in 2004 and 2006–2007 at some licensed areas of Volgogradsky Povolzhye territory are presented in the article.
Key words: geochemical survey; exploration wells; licensed areas; oil and gas potential.
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NEW APPROACHES TO DEVELOPMENT OF OIL AND GAS POTENTIAL OF BAZHENOVSKY HORIZON IN THE WESTERN SIBERIA (ð. 37)
Kharakhinov Valery Vladimirovich, Shlenkin Sergey Ivanovich, Berin Maxim Vladimirovich
"Slavneft–Research Production Center, Ltd." ("Slavneft–RPC") 21A, Tchaikovsky prosp., 170002, Tver, Russian Federation, tel./fax: (482) 232-35-68, e-mail: tvergw@slavneft.ru
Vashkevich Alexey Alexandrovich
JSC "Gazpromneft" 3-5, Pochtamtskaya str., 190000, St.-Petersburg, Russian Federation, tel.: (812) 385-92-01, e-mail: VASHKEVICH.AA@gazprom‑neft.ru
Olyunin Alexey Vladimirovich, Shevchuk Taras Nikolaevich
"Gazpromneft–Angara, Ltd." 24, office 19N, Yakubovich str., 190000, St.-Petersburg, Russian Federation, tel.: (812) 313-69-24, e-mail: Olyunin.AV@gazprom‑neft.ru, Shevchuk.TN@gazprom‑neft.ru
The paper proposes some new approaches to the study of bazhenovsky oil-bearing deposits in the Western Siberia based on innovative technologies application to localize productive areas of bazhenovsky complex.
Key words: bazhenovsky suite; seismic exploration; fracturing; field of scattered waves energy; synergistic singularities; comprehensive assessment.
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INFLUENCE OF GEOLOGICAL CHARACTERISTICS OF AN OIL AND GAS DEPOSIT ON THE EFFICIENCY OF A FORMATION HYDRAULIC FRACTURING (ð. 52)
Kustyshev Alexander Vasilievich, Vaganov Yuriy Vladimirovich
Tyumen State Oil and Gas University 38, 50 Let Oktyabrya str., 625038, Tyumen, Russian Federation, tel./fax: (345) 228-66-94, e-mail: kustishev@tngg.info
Kustyshev Denis Alexandrovich
"TyumenNIIgyprogaz" 2, Vorovsky str., 625019, Tyumen, Russian Federation, e-mail: kustishev@tngg.info
Gaykhman Mikhail Grigorievich
"Gazprom dobycha Krasnodar, Ltd." 53, Shosse Neftyanikov str., 350051, Krasnodar, Russian Federation, e-mail: chernyaeva@kuban.gazprom.ru
The article considers the main factors of geological characteristic that affect the hydraulic fracturing efficiency such as oil-saturated thickness of a formation and its initial permeability. The parameter characterizing the dimension of a formation hydraulic fracturing, making a fracture half-length, is determined. The above-mentioned requirements for the fracture half-length are justified from the geological point of view as well as development of oil and gas fields. Field data analysis confirmed the influence of the initial permeability of a productive formation and its oil-saturated thickness on the efficiency and duration of a formation hydraulic fracturing. The factors affecting the proppant bedding in the fracture created due to the formation hydraulic fracturing as well as the influence of geological environment stress on the fracturing process are identified. Herewith, the influence of a wellbore inclination angle in the interval of the formation hydraulic fracturing on the hydraulic fracturing gradient is proved. It is determined that the breakdown pressure decrease goes together with the inclination angle increase, however, the fracture half-length reduces due to the pressure decrease aimed to the fracture length distension leading to uncontrolled fracture "over blowing" and vertical proppant bedding.
Key words: geological characteristic of an oil and gas deposit; formation hydraulic fracturing; fracture; permeability; inclination angle; proppant; efficiency; oil-saturated thickness; pressure gradient; well.
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"CLAY" IN SANDSTONE: ORIGIN, COMPOSITION, EVOLUTION (Review of foreign articles) (ð. 58)
Shaldybin M.V.
Tomsk Polytechnic University 30, Lenin prosp., 634050, Tomsk, Russian Federation, e-mail: ShaldybinMV@yandex.ru
The paper presents an overview of up-to-date foreign articles devoted to clay minerals and clay cement in sandy rocks. The sources of clay material income into sandstones are discussed. A brief characteristic of the main clayish phases of cement, such as kaolinite, smectite, illite and chlorite, is given. The problems of clay cement evolution during the early and late diagenesis of sandstones are considered. The impact of clay minerals on capacitive-volumetric properties of reservoir rocks is discussed.
Key words: clay minerals; sandstone; clay cement; evolution.
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JSC "ALL-RUSSIAN SCIENTIFIC-RESEARCH INSTITUTE OF ORGANIZATION, MANAGEMENT AND ECONOMICS OF OIL AND GAS INDUSTRY" |