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The AAPG/Datapages Combined Publications Database
Journal of Petroleum Geology
Abstract
Journal of Petroleum Geology, vol.26 (
UNCONVENTIONAL OIL ACCUMULATIONS IN THE UPPER JURASSIC BAZHENOV BLACK SHALE FORMATION, WEST SIBERIAN BASIN: A
SELF
-SOURCED RESERVOIR SYSTEM
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self
-sourced reservoirs. Reservoir zones are
generally small and are located along fault planes. Primary oil migration was focused
along fracture networks adjacent to the fault zones. Oil charging took place in the Tertiary
and oil generation and expulsion in the Bazhenov Formation led to overpressuring. In the
study area between the Surgut and Nyalinsk arches in the centre of the basin, faulting and
fracturing took place in Eocene to Quaternary time. The faulting led to local increases in
the thermal maturity of the Bazhenov Formation. Exploration risk in the
self
-sourced
Bazhenov Formation reservoirs mainly relates to seismically-defined regional faults or to
transverse faults.
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