Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2009, Vol. 30 ›› Issue (6): 699-701.

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Origin and Distribution of Dolomite Reservoir of Permian Fengcheng Formation in Wuerhe Area, Junggar Basin

GUO Jian-gang1a, ZHAO Xiao-li1b, LIU Wei1a, HUNAG Li-liang1a, LU Yang1a, LI Hui1a, FANG Lin-hao2   

  1. 1. PetroChina Xinjiang Oilfield Company, a.Research Institute of Exploration and Development, b.Research Institute of Oil Recovery Technology, Karamay, Xinjiang 834000, China;
    2. Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, CAS,Lanzhou, Gansu 730000, China
  • Received:2009-03-13 Revised:2009-04-25 Published:2020-10-23

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Abstract: This paper analyzes the origin and distribution of dolomite reservoir of Permian Fengcheng formation in Wuerhe area in Junggar basin, and proposes that the distribution of dolomite reservior is controlled by sedimentary facies. The occurrence of dolomite in fan delta is obviously restricted, and its main distribution area is the lake-bay area among the front fans of the fan delta. The dolomite is generally formed in environment of slightly salty shallow lake with still water, where the terrigenous mud sediments are changed by strong dolomitization with varied Mg2+ content during their diagenetic process.

Key words: Junggar basin, Wuerhe, Fengcheng formation, dolomite, reservoir, origin

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