--> Abstract: Comparative Analysis of the Thermal History and Perspective of Oil-Gas Generation in Sedimentary Sections of the South Barents Depression and the Admiralteyskoe Rise, by Georgy Evgenjevich Yakovlev and Yurii Ivanovich Galushkin; #90072 (2007)

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Comparative Analysis of the Thermal History and Perspective of Oil-Gas Generation in Sedimentary Sections of the South Barents Depression and the Admiralteyskoe Rise

Georgy Evgenjevich Yakovlev and Yurii Ivanovich Galushkin
Lomonosov Moscow State University, Moscow, Russia

We compared the thermal and HC-generation histories of the Paleozoic, Mesozoic and Cenozoic sedimentary rocks in the South Barents depression with similar characteristics of the Admiralteyskoe rise. Our analysis is based on numerical modeling in the frame of the GALO basin modeling system, that was carried out for 10 areas (Krestovaya, Admiralteyskaya,Pachtusova, Ludlovskaya, Ledovaya, Shtokmanovskaya,Arcticheskaya,Peschanoozernaya, Pomorskaya and Severo-Gulyaevskaya areas. Evolution of the basin lithosphere in the South Barents depression includes the continental rifting in the Devonian and considerable thinning of the crust in the Permian and Triassic accompanied by intensive sedimenta-tion. Numerical analysis assumes that the Carboniferous, Permian and Lower Triassic rocks at the depth of 1000-3600 m of Admiralteyskaya and Pachtusova areas are mainly oil-generating, whereas the deeper horizons can be considered as gas-prone. The rocks an the depth of 2500-4200 in the Ledovaya, Shtokmanovskaya and Arcticheskaya areas are oil prone. Formation of secondary oil and gas deposits can be due to step-like rising migration of HC along the tectonic dislocations in the eastern slope of the Admiralteyskoe rise.

 

AAPG Search and Discovery Article #90072 © 2007 AAPG and AAPG European Region Conference, Athens, Greece