The Origin of Low Porosity and Low Permeability in Badaowan Formation Reservoirs of Jurassic, Shixi Area of Junggar Basin

Abstract

Abstract: A systematic analysis of clastic reservoir characteristics of Badaowan formation in Jurassic in Shixi area of Junggar basin was made. It showed that the reservoir rock is characterized by low composition maturity and high texture maturity; that the diagenesis belongs to progressive buried compaction that is extensively distributed, with weak cementation, which primarily occurred in stage A1 of late diagenesis; that main types of pores is dominated by residual intergranular space with partial grain solutional voids. It is believed that the important cause of low permeability of the reservoir is resulted from the serious diagenetic compaction and enriched plastic clastic as phyllite.

Key words: Junggar basin, Shixi area, Early Jurassic, clastic rock, pore type, phyllite

CLC Number:

TE112.221

KUANG Jun, YAO Gen-shun, ZHU Guo-hua, WANG Xing-xin. The Origin of Low Porosity and Low Permeability in Badaowan Formation Reservoirs of Jurassic, Shixi Area of Junggar Basin[J]. Xinjiang Petroleum Geology, 2001, 22(6): 493-495.

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The Origin of Low Porosity and Low Permeability in Badaowan Formation Reservoirs of Jurassic, Shixi Area of Junggar Basin

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