Petroleum geology and resources of the west siberian basin. This paper considers the main aspects of bazhenov formation interpretation and. The bazhenov formation draws attention of researchers for many years 2, 3, 4, 6. Two of them occupy the central and south ern areas of the basin and are stratigraphically superposed. Lithology evaluation of bazhenov formation reservoir using. Highly organicrich siliceous shales of the bazhenov formation were deposited during this time in anoxic conditions on the sea bottom. The global spread of advanced fracking technology is winning the oil war.
Now, an influx of western technology and experience developed in the us shale patch as well as backing from the kremlin are moving russia closer than ever to unlocking its vast unconventional oil deposit. The geology of the bazhenov looks just as good if not better. The formation is 20 to 50 m thick and contains 5 to 20 percent toc. The bazhenov formation or bazhenov shale is a geological stratum in the west siberian basin. Pdf the bazhenov formation is the analog of the bakken formation. To purchase the paper in english, order spe162094ms. Shale oil in bazhenov formation on deposits of western siberia article pdf available in iop conference series earth and environmental science 874. Bazhenov formation of the west siberian basin is the largest unconventional oil resource play in russia. This area is characterized by high risks of borehole instability. Pdf shale oil in bazhenov formation on deposits of. Gazprom neft strives to go it alone in russian shale oil. Nowdays oil production from the bazhenov formation rocks is carried out from. History of the sourcerock bazhenov formation, arctic region, west siberia, by the example of.
As oil and gas prices increase or decrease, the volume of the economically recoverable resources increases or. Bazhenov suite is widespread regional marker horizon. The geochemical patterns of rocks of the bazhenov and. The work is devoted to interpretation of results received. Reservoir properties of the bazhenov formation russian. We would like to show you a description here but the site wont allow us.
Pdf laboratory investigations of hydrous pyrolysis as. Some calcareous nannofossils from the upper jurassiclower cretaceous bazhenov formation of the west siberian marine basin, russia. Secondary reservoirs of the bazhenov and abalak formations. The bazhenov formation or bazhenov shale is a stratum in the west siberian basin formed from sediment deposited in a deepwater sea in tithonianearly berriasian time. This goal may be subdivided into the following objectives. The type sections of the bazhenov horizon and formations recognized within this horizon have been identified based on a comprehensive analysis of paleontological, lithological, geophysical welllog and cdp seismic data, and geochemical data on the west siberian basin. Secondary reservoirs of the bazhenov and abalak formations and. Bazhenov formation consists of tight rocks with porosity less than 16% and permeability usually less than 0. The global spread of advanced fracking technology is. Resource concentration of the bazhenov formation is estimated as million barrels mi2 eiaari, may 20. Clay sediments of the togur formation were deposited in a system of intracontinental subbasins in the southern half of the west siberian basin. Assessment of undiscovered continuous oil and shalegas. In this study, we propose a new classification of rocks of the bazhenov formation based on the proportions of four principal components siliceous, clay, and carbonate minerals and organic matter kerogen of mostly biochemogenic and, to a lesser extent, allothigenic origin. Russia is the first in the world by the reserves of shale oil, which is mostly related to the bazhenov formation.
This carbonate layer was indicated practically in all wells aside from two wells 175 and 160. Also bazhenov occupies area more than 1 million sq. The main goal of this project is the evaluation of the bazhenov formation reservoir and study of very thin reservoir rocks using wireline logs and seismic interpretation. Impacts of kerogen content and fracture properties on the. Bazhenov formation in west siberia is featured by vast hydrocarbon reserves, however, its development is difficult due to the geological structure and properties of the deposit. Map showing the bazhenov continuous oil and bazhenov shale gas. Open access some calcareous nannofossils from the upper. However, bazhenov is characterized by higher values of porosity, which can reach 10% or more average 8% and permeability up to 10 md, but average is 1 md. A smilar inclination is derived from a late cretaceous island arc complex from the tokoro belt on hokkaido.
Jsc ritek was planning to drill a horizontal well in oil shales of the bazhenov formation in the area of wells 100h101h in the middle nazym field, western siberia. Foxit software is the reliable source for fast, affordable, and secure pdf solutions. Mesozoiccenozoic climate and neotectonic events as factors in. Current status of oil recovery from bazhenov formation. Convert and create pdf from various types of files like word doc, excel xls, powerpoint ppt. Petroleum geology and resources of the west siberian basin, russia by gregory f. Last years there has been a trend in russia to develop hardtorecover oil reserves with lowpermeability less than 12. Bazhenov formation is a geological body composed of shale, silica and carbonate rocks of different proportions and with different amount of organic matter b. The slopes of the first ring elements in the plan are oriented in the opposite direction clockwise. They are segregated by finelaminated 38 m thick formation members that are rich in organic matter. They also contain oil accumulations in unconventional selfsourced reservoirs. The bituminous upper jurassic bazhenov formation was deposited over much of the wsb during a period starved.
The carbonate layer was indicated in the lower part of bazhenov formation using acoustic log travel time decreases, and also using neutron porosity log porosity also decreases. Efforts to exploit the vast bazhenov formation hit by loss of western partners. Nowdays oil production from the bazhenov formation. The bakken shale play is one of the biggest in the u. It was formed from sediment deposited in a deepwater sea in tithonianearly berriasian time.
Paleomagnetism of a late cretaceous island arc complex. Reservoir properties of the bazhenov formation onepetro. Calcareous nannofossils of the bazhenov formation the open geology journal, 2012, volume 6 27 elements from the first external ring to the second and from the second to the third. The bazhenov formation is represented by late jurassic black shales. This file contains additional information such as exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it.
Pdf some calcareous nannofossils from the upper jurassic. Bazhenov formation is confined to thin bed, and restricted in lateral direction. Main oil source formations of the west siberian basin. Bazhenov fm classification based on wireline logs d a simonov1, v baranov2 and n bukhanov3 1, 2, 3 tomsk polytechnic university, tomsk 634034, russia email.
The geochemical patterns of rocks of the bazhenov and abalak formations western siberia. The upper jurassic bazhenov formation in the central west siberian basin is a classic marine black shale unit containing abundant type ii kerogen with high oilgeneration potential. Forbes takes privacy seriously and is committed to transparency. What links here related changes upload file special pages permanent link page information wikidata item cite this page. Technically recoverable shale oil and shale gas resources eia.
Landowners file lawsuit to compel new york to end moratorium on hydraulic fracturing. Two strongly oilprone source intervals are present in the west siberian basin, the togur formation early toarcian, early jurassic and the bazhenov formation volgianberriasian, late jurassic to early cretaceous. The bazhenov formation or bazhenov shale is a stratum in the west siberian basin. Introduction bazhenov formation of the west siberian basin is the largest unconventional oil resource play in russia. Its pay zone averages about 100 feet thick, and as clint points out, the bazhenov has lots of cracks and fractures that could make its oil flow more readily. The sea covered more than one million square kilometers in the central basin area. They are segregated by finelaminated 38 m thick formation. Usingmultifocusing 3d diffraction imaging to predict. The principal part of organic substances is contained in the impermeable rock matrix in the form of solid kerogen. When russia finally hops on shale bandwagon, opec is finished. Bazhenov formation development problems are becoming essential. Deep faults reaching the bazhenov formation are wellmapped in several petroleum areas salymskaya, krasnoleninskaya, northsosvinskaya, samotlorskaya, etc.
Petroleum expulsion and formation of porosity in kerogen. Lithofacies and isopach map of bazhenov formation and stratigraphic equivalents. Pyrite is the main mineral that occludes the pore volume and degrades porosity and permeability in the bazhenov formation. Formation, barnett shale, and the eagle ford shale in the usa, rmah formation in syria, sargelu formation in the northern gulf of arabia region, athel formation in oman, bazhenov formation and achimov formation of west siberia in russia, in coober pedy in australia, chicontepec formation in mexico, and the vaca muerta oil field in argentina. Technically recoverable shale oil and shale gas resources. Jurassic bazhenov shale in the west siberian basin, figure ix1.
Pdf converter is a online webbased document to pdf converter software. The upper tps, bazhenovneocomian, contains the bulk of the basins oil reserves. Below there is a diagram showing pool formation in the bazhenov deposits overlying the preachimov and the underlying georgiev deposits affected by disjunctive. The results show that rocks of the bazhenov formation were formed under the conditions of low fluxes of clastic material, a reduced environment, and a periodically occurring hydrogen sulfide mode. High api gravity oil from the salym field has surpassed the peak of the oil window, consistent with abnormally high temperatures and pressures in the bazhenov source rock from which it is produced. The work is devoted to interpretation of results received from a wide complex of laboratory petrophysical investigations of the bazhenov formation rocks collected from. Petroleum geology and resources of the west siberian basin, russia pdf.
These shales source around 90% of the oil in the west siberian basin. It is highly bituminous, and its total organic carbon reaches 2025%. Bazhenov formation a geological formation in siberia, russia, which contains large reserves of unconventional oil surname list this page lists people with the surname bazhenov. Pspetroleum expulsion and formation of porosity in kerogen.
Bazhenov development is very important for russias energy future november 14, 2012 about. The bazhenov formation tithonian to berriasian occupies about 1 million km 2 in the central part of the west siberian plate and is buried by. Significant amount of different maturity kerogen in bazhenov oilshale formation are reserves of hydrocarbons to be recovered by enhanced oil recovery methods in nearest future when the conventional oil field development drops crucially. The sea covered more than one million km 2 in the central basin area. The bazhenov formation is presently in the oil window zone over most of. The important stage in tectonostratigraphic development of the basin was formation of a deepwater sea in volgianearly berriasian time. Bazhenov development is very important for russias energy. Lithology evaluation of a bazhenov formation reservoir. Geochemistry of the upper jurassiclower cretaceous bazhenov. Bazhenov formation consists of siliceousargillaceouscarbonaceous rock mass. Highly organicrich siliceous shales were deposited during this time in anoxic conditions on the sea bottom. Russian oilmen have known of the bazhenov shales potential for decades but never quite figured out how to coax out the formation s riches. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The volume of economically recoverable resources is determined by both oil and natural gas prices and by the capital and operating costs that would be incurred during production.
Selfsourced bazhenov fractured reservoirs assessment unit. Pdf lithology evaluation of a bazhenov formation reservoir using. Bazhenov formation in the oil game, russia has the longest suit to play guest post by david archibald logistic decline plots may be misleading when the production profile has been affected by political events. The latter primarily include bazhenov, domanic and achimov fields.
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