V.N. Borodkin, A.R. Kurchikov, А.S. Nedosekin, E.N. Firstaeva, A.Ya. Strekalov, 
A.V. Pogretsky 
 
Evaluation of petroleum potential using 2D areal seismic data in the Jurassic-Cretaceous formations, South-Kara region
DOI: 10.31087/0016-7894-2018-2-61-70

The paper considers the offshore part of the Kara Sea corresponding to the South-Kara syneclise. Based on the geochemical studies completed, the attention is paid to the fact that the Bazhenov bituminous clay within the study area occur in the oil window, which once again validates the prospectivity of the region under investigation. Relying on the new areal 2D seismic surveys conducted by LLC Gazprom Geologorazvedka, the updated geoseismic model of the Jurassic, Neocomian, and Aptian-Albian-Cenomanian formations is presented. Stratigraphic-type hydrocarbon traps are predicted in the basal part of the Lower Jurassic section. Three structural hydrocarbon traps are delineated by the uppermost part of the Middle Jurassic formations. Development of sandy siltstone Nurminsky formations are predicted within the Upper Jurassic deposits. The Achimov clinoform sequence is identified in accordance with seismic data, but mapping of exploration targets requires 3D seismic survey to be conducted. Series of local objects is identified in the Aptian-Albina-Cenomanian sequence; their prospectivity is confirmed by the results of various seismic technologies. With a view to assess the exploration targets, optimal scope of exploration and appraisal works is planned.

Key words: South-Kara syneclise; oil/gas play; geoseismic model; exploration target; hydrocarbon resources; wildcat​.

 

For citation: Borodkin V.N., Kurchikov A.R., Nedosekin A.S., Firstaeva E.N., Strekalov A.Ya., Pogretskii A.V. Evaluation of petroleum potential using 2D areal seismic data in the Jurassic-Cretaceous formations, South-Kara region. Geologiya nefti i gaza = Oil and gas geology. 2018;(2):61–70. DOI: 10.31087/0016-7894-2018-2-61-70.

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V.N. Borodkin

Trofimuk Institute of Petroleum Geology and Geophysics, Russian Academy of Sciences, Tyumen, Russia;

Tyumen State Oil and Gas University, Tyumen, Russia;

komgort@mail.ru

A.R. Kurchikov

Trofimuk Institute of Petroleum Geology and Geophysics, Russian Academy of Sciences, Tyumen, Russia;

kurchikovar@ipgg.sbras.ru

А.S. Nedosekin

LLC “Ingeoservice”, Tyumen, Russia;

anedosek@ingeos.info

E.N. Firstaeva

LLC “Ingeoservice”, Tyumen, Russia;

efirsta@ingeos.info

A.Ya. Strekalov

Gazprom geologorazvedka, Tyumen, Russia;

a.strekalov@ggr.gazprom.ru

A.V. Pogretsky

Gazprom geologorazvedka, Tyumen, Russia;

a.pogretskiy@ggr.gazprom.ru