Fracture System and Petroleum Distribution in West District of Southern Songliao Basin

Abstract

Abstract: The formation of fracture system in Songliao basin controlled by its evolutionary pattern has influenced flling series and oil-gas distribution during each evolutional stage. According to its origin and features, the fracture system in west district of southern Songliao basin has been classified into growth-like system of faulted stage that controls the formation and development of faulted basin group, spread-like system of depressed stage that controls hydrocarbon accumulation series and distribution and reversed system that allows to remigration of hydrocarbon. The origin mechanism, distribution characteristic as well as the similarity and differentiation in different evo-lutional stages of the fracture system, etc. are systematically reviewed. All of these have improved the reservoir conditions or qualties and been favorable for hydrocarbon accumulation.

Key words: Songliao basin, rift, fracture, depression, reservoir distribution

CLC Number:

TE112.1

WANG Jian-gong, WU Ke-ping, WEI Ping-sheng, ZHAO Zhan-yin, PAN Shu-xin, ZHAO Zhi-kui. Fracture System and Petroleum Distribution in West District of Southern Songliao Basin[J]. Xinjiang Petroleum Geology, 2005, 26(1): 29-32.

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