2007•Journal of Oil and Gas TechnologyRequires access

Characteristics of J_2q Source Rocks in Kuqa Depression

Qian Li, Kong Fanzhi, Kaiyuan Chen

Abstract

Many newly found oils in Kuqa Depression were from J2q source rocks,but they were not clearly recognized,especially the type of organic matter was not well known.A pyrolysis data base of Kuqa Basin was established to study the characteristics of J2q source rocks,J2q lake facies source rocks were mainly developed from the lower strata,it was more developed in the west than that in the north.Organic abundance was higher and its hydrocarbon genetic potential was the highest among the source rocks.Type of organic matter was I~II kerogen,which was the best among the source rocks.Organic maturity in the west is higher than that in the north,it is at mature stage.J2q Formation is the most important source rock in Kuqa Depression

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Key concepts: Source rock, Kerogen, Maturity (psychological), Geology, Organic matter, Geochemistry, Facies, Pyrolysis