RESERVOIR QUALITY AND COMPLEX TRAPS IN UPPER JURASSIC OF CENTRAL AND SOUTHERN WEST SIBERIA: ADAPTIVE SEISMOGEOLOGICAL MODELING
V.A. Kontorovich, S.A. Berdnikova, L.M. Kalinina, and A.A. Polyakov
Institute of Petroleum Geology, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: Callovian-Tithonian section, wave train, supracoal and subcoal members, reservoir, trap, screen, porosity, permeability
Pages: 72-81
Abstract
A new approach to detection and mapping of oil and gas traps in the Callovian-Tithonian section on the basis of combined seismic, log, and core data has been tested in a field within the Vasyugan Formation. The sand bed U11 in the upper Vasyugan Formation, with variable lithology and facies and mostly combination structural-depositional traps, is the most prolific hydrocarbon reservoir in southeastern West Siberia.
The reservoir quality of U11 and traps in it were predicted using special seismogeological criteria developed through interpretation of synthetic geological and geophysical data, including mathematical modeling of wave fields. The same approach to mapping and reservoir quality evaluation, adapted to different geological conditions, was successfully tested in other fields of central and southern West Siberian petroleum province.
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