South-Tunguska petroliferous region: geologic structure and petroleum potential

Abstract

Riphean and Vendian terrigenous complexes are not affected by trap injections within the South-Tunguska petroliferous region and thus can be considered a priority for further prospecting for hydrocarbon accumulations. Although these strata are not exposed with wells and are not characterized by core samples, their wide distribution is proved by seismic data. The obtained data and previous paleogeographic reconstructions show similar depositional environments of terrigenous sediments for the South-Tunguska and Baikit petroliferous regions. These facts substantiate criteria for the prediction of sand reservoirs within the study area. Taking into account the complex geologic structure of the South-Tunguska petroliferous region, ambiguity of seismic data interpretation, and problems of deep-drilling technology, we provide recommendations for the geological exploration.

Chemical Characteristics of Ore-Bearing Intrusions and the Origin of PGE–Cu–Ni Mineralization in the Norilsk Area

“…Grinenko [69,81] formulated another idea for the supply of heavy sulfur by parental magma from the oil deposits of eastern Siberia. Among the ancient (pre-Jurassic) deposits of Siberia, the Leno-Tunguska oil and gas province is well known, including the Baikit and Katanga oil and gas regions [82][83][84]. The Baikit anticline comprises seven deposits, including the largest unique oil and gas deposit, Yurubcheno-Tokhomsky, which is the oldest in the world, localized in Proterozoic (Riphean) rocks.…”

“…The Baikit anticline comprises seven deposits, including the largest unique oil and gas deposit, Yurubcheno-Tokhomsky, which is the oldest in the world, localized in Proterozoic (Riphean) rocks. However, it is assumed that the formation of the oil occurred in the middle-late Paleozoic [82,85], while its gas cap was probably formed in the Triassic. Therefore, from the point of view of possible assimilation, only the oil deposits of this area are of interest.…”