--> Abstract: North Okhotsk - West Kamchatka Zone of Cenozoic Subsidence - the Most Important Object for Discovery of Large Hydrocarbon Accumulations, by Y. N. Grigorenko, L. S. Margulis, Y. S. Voronkov, and V. G. Radchenko; #90942 (1997).

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Abstract: North Okhotsk - West Kamchatka Zone of Cenozoic Subsidence - the Most Important Object for Discovery of Large Hydrocarbon Accumulations

GRIGORENKO, Yu.N.*, L. S. MARGULlS, Yu. S. VORONKOV, and V. G. RADCHENKO

The north part of the Okhotsk region is a combination of some heterogeneous troughs with a Cenozoic cover up to 10-12 km in thickness. These are North Okhotsk, Okhotsk-West Kamchatka, Tinro troughs. Total area of downwarping is more than 250,000 km2.

There are 4 complexes in the sedimentary cover: Paleogene, Lower Miocene, Middle-Upper Miocene, and Pliocene ones.

The petroleum potential of the North Okhotsk - West Kamchatka zone of downwarping is related to all the Cenozoic cover but, mainly, to Neogene deposits. Four small gas-condensate fields have been discovered in these deposits at the margin of this zone (West Kamchatka). About 10 anticlinal zones are revealed in offshore West Kamchatka. In the largest zones, the predicted resource density is similar to the resource density in the zones of the North Sakhalin shelf.

The predicted petroleum accumulation zones, as a rule, separate the large depressions where oil and gas form. These zones are the main objects of resource exploration and further development.

AAPG Search and Discovery Article #90942©1997 AAPG International Conference and Exhibition, Vienna, Austria