Geologic prerequisites for increment of the mineral resources base of the Yurubchen-Kuyumba petroleum production center

The Yurubchen-Kuyumba petroleum production center is being formed in the central part of Krasnoyarsk region, in the middle reaches of the Podkamennaya Tunguska River. It comprises the Kamo arch, the most elevated area of the Baikit anteclise, and its slopes. The main hydrocarbon (HC) resources (app. 820 mln tons) occur in the unique Riphean petroleum fields (Yurubchen and Kuyumba) of the Yurubchen-Tokhomo petroleum accumulation zone (YuT PAZ). The first commercial gas inflow was obtained from the Kuyumbinskaya-1 well in 1973, and that of oil from the Kuyumbinskaya-2 and 9 wells, in 1976. The Yurubchen-Tokhomo petropeum accumulation zone was originally established in 1986 under the Complex Plan for Optimization of Regional, Prospecting, and Exploration Works in the Yurubchen-Tokhomo Petroleum Accumulation Zone. Nowadays the main resources and reserves of oil, gas and condensate are located in two petroliferous complexes, Riphean (main) and Vendian (supplementary). The extension, structure, and petroleum potential of the reservoirs of these complexes are discussed in the paper. To facilitate continuation of the prospecting and exploration works of the new oil fields and reservoirs, it is proposed to include the adjacent territories of the YuT PAZ (Omoro PAZ, Vaivida and Taimba petroleum prospects, Turama and Mutorai underexplored prospects) into the Yurubchen-Kuyumba petroleum production center. We propose support of stable annual oil production in the Yurubchen-Kuyumba petroleum production center as the main purpose of the petroleum exploration works.