Presence of oil and gas in the Paleozoic roof under conditions of the West-Siberian plate is associated for the most part with carbonate and carbonate-terrigenous Pre-Jurassic outcrops. We have been discovered a lot of hydrocarbon fields confined to the disintegrated roof of these carbonate units in different areas of the West-Siberian plate. Under conditions of West Siberia the CDP method does not provide the necessary information about the Paleozoic structure. In this connection we used seismic interpretation of CR data processed previously in the region. Processing of previous CR data with two-dimensional seismic tomography can make it possible to get additional geological evidence very important in searching for oil and gas pools in Paleozoic deposits, in particular, to reveal carbonate reservoirs favorable for HC accumulations in them without laborious and expensive field work.


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