OIL AND GAS TRAPS IN VENDIAN RESERVOIRS OF THE BAIKIT PETROLEUM PROVINCE: RESULTS OF SEISMOGEOLOGICAL MODELING
N.V. Mel'nikov and A.V. Isaev
Siberian Research Institute of Geology, Geophysics, and Mineral Resources, 67 Krasnyi Prosp., Novosibirsk, 630091, Russia
Keywords: Baikit petroleum province, basic seismogeological model of Vendian section, Vanavara Formation, structural-depositional traps
Pages: 120-129
Subsection: REGIONAL GEOLOGY OF OIL AND GAS
Abstract
Oil and gas pools in the Vendian section in the Baikit petroleum province may be associated with structural-depositional traps. These traps have been investigated through reference seismogeological modeling based on CMP profiling and log data. Different basic models correspond to structural-lithological traps in sandstones of different facies: Fluvial sandstones form traps in valleys incised into a pre-Vendian plateau, and large traps in deltas and embayments occur in shallow-sea environments near the pinchout of the Vanavara terrigenous section. Processing of over 150 well logs and 7000 km of CMP data revealed six oil and gas traps in Vendian sandstones, including two high-potential traps in the pinchout zone.
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