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PETROLEUM POTENTIAL OF Previous HitEASTNext Hit SIBERIA

PIGGOTT, Neil N.1, GURYANOV, Alexey1, JONES, Robert W.1, and HOMZA, Thomas X.2, (1) Chertsey Road, Sunbury on Thames, Middlesex, TW16 7LN, United Kingdom, [email protected], (2) Chertsey Road, Sunbury on Thames, Middlesex, TW16 7LN, United Kingdom, Present Address: Shell Exploration & Production Company, 3601 C Street, Anchorage, AK 99503

The Previous HitEastNext Hit Siberian craton covers an area in excess of 3.8 million sq. km. A rapid, pragmatic approach to focus attention and resources on the most hydrocarbon-prospective areas without compromising the study quality has been developed.

Principal building blocks for prospectivity assessment in chronological order of appearance were tectono-stratigraphic diagrams consistent with tectonic evolution of margins of the Previous HitEastNext Hit Siberian craton. These constrained the basins developed on the margins of the Previous HitEastNext Hit Siberia craton from Pre-Cambrian to Tertiary times. Relevant paleogeographic maps representing gross depositional environments at certain time slices were constructed with special attention to major Previous HitreservoirNext Hit and source Previous HitrockNext Hit depositional events. Levels with Previous HitreservoirNext Hit presence were further analysed for Previous HitreservoirNext Hit effectiveness at different depths. Oils and source Previous HitrockNext Hit geochemical data were input into the geological framework to characterize the range of petroleum systems. The very long geologic evolution of Previous HitEastNext Hit Siberia resulted in a wide variety of source rocks spanning from Pre-Cambrian to Cretaceous in age, most of which generated significant volumes of hydrocarbons.

The tectono-stratigraphy, gross depositional environment maps, and petroleum systems were the technical building blocks for a series of common risk segment (CRS) maps, which were drawn for petroleum charge, Previous HitreservoirNext Hit, and trap regional risks, which in turn provided a stratigraphic and geographic focus of which basins had most potential for further exploration. Commercial considerations were further addressed by considering minimum petroleum volumes and Previous HitreservoirNext Hit performance required reflecting the remoteness of Previous HitEastNext Hit Siberia and absence of significant infrastructure. Based on this approach, a basin and play ranking for Previous HitEastTop Siberia exploration has been developed.