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YANG Yue, ZHANG Hua-an. Oil and gas pool formation control factors and reservoir conditions of Chang-6 reservoir in west area of Guoqi, Yanchang oil field[J]. Northwestern Geology, 2005, 38(3): 68-75.
Citation: YANG Yue, ZHANG Hua-an. Oil and gas pool formation control factors and reservoir conditions of Chang-6 reservoir in west area of Guoqi, Yanchang oil field[J]. Northwestern Geology, 2005, 38(3): 68-75.

Oil and gas pool formation control factors and reservoir conditions of Chang-6 reservoir in west area of Guoqi, Yanchang oil field

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  • Received Date: April 11, 2005
  • Revised Date: June 07, 2005
  • Published Date: September 04, 2005
  • The authors question the main factors of influence reservoir conditions and oil-gas pool formation, by studying sedimentary microfacies,petrodistinction, diagensis, porous structural character and physical quality conditions.The main sedimentary microfacies of Triassic system Yanchang Formation incipient Chang-6 reservoir horizons in west area of Guoqi,Yanchang oil field is delta front subaqueous distributary channel deposits, and later Chang-6 mainly is distributary channel. Reservoir horizons are development,this area form reservoir horizons of low porosity and extra low permeability for diagensis influence,oil pool is the typical litho-petrolifertous-pool,distribution of oil pool is controlled by sediment ary micro facies and reservoir physical quality.
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