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Basin Modeling and Estimate of the Resource Potential for Mesozoic Hydrocarbon Systems of the South-Kara BasinNormal access

Authors: I.A. Sannikova, A.V. Stoupakova and R.S. Sautkin
Event name: Saint Petersburg 2018
Session: Petroleum Systems and Basin Modeling
Publication date: 09 April 2018
DOI: 10.3997/2214-4609.201800256
Organisations: EAGE
Language: Russian
Info: Extended abstract, PDF ( 1.09Mb )
Price: € 20

A significant part of the resource potential of Russia is located in the offshore part of the Kara Sea basin. Here commercially productive hydrocarbons (HC) are confined to a wide stratigraphic interval from gas and condensate reservoirs in the Cenomanian-Albian-Aptian deposits (Rusanovskoe, Leningradskoe field) to oil reservoirs in the Lower Cretaceous and Jurassic deposits within the Ob-Taz shoal water zone (Bovanenkovskoe field). We have carried out geological and geochemical basin modeling on three seismic and geological profiles to determine the main hydrocarbon localization zones and the amount has not yet explored the resource potential of the Kara Sea basin. We have identified ten source rocks. Their quality and type of kerogen are characterized by pyrolysis on the actual research. According to the simulation results we have obtained detailed heat model of thermal regime and vitrinite reflectance. Undrilled hydrocarbon accumulations are predicted in the Cenomanian-Albian-Aptian sandstones on Obruchevskiy high, in Early Cretaceous clinoforms and Middle Jurassic sandstones of Malyshevskaya and Vymskaya formations in the South Kara depression. We also estimated the generated resources by Jurassic-Cretaceous source rocks in the Kara Sea basin. There was generated 3.3 trillion tons HC, of which the accumulation was subjected to 117 billion tons HC.

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