Prospects of Shale Oil Bazhenov Formation in the South-East of Western Siberia

Abstract

Abstract South-east of Western Siberia (Tomsk Region) faces good prospects for developing shale oils from Bazhenov formation. Ample preconditions are available there: high content of organic matter of excellent oil-generating quality in Bazhenov formation rocks and main oil formation stage of primary rocks. However, drilling success appreciably depends on the correct choice of the well spud-in place. Regional geochemical investigations of Bazhenov formation and of Bazhenov genetic type of oils may considerably confine the area of search by choosing the most promising areas for detecting shale oil deposit. Recent investigations permitted to identify a regional pattern of changes in Bazhenov formation rocks catagenesis and to grade the prospective regional oil-bearing capacity associated with hydrocarbon generation by Bazhenov formation rocks. Identification of regularities in expansion of Bazhenov - type oils as well as comparison between the maturity of oils and the maturity of organic matter of Bazhenov formation rocks permitted to mark out areas that are promising for the formation of both oil deposit in traditional oil reservoirs and of shale oil deposit.