Lithologic Reservoirs ›› 2010, Vol. 22 ›› Issue (4): 43-51.doi: 10.3969/j.issn.1673-8926.2010.04.008

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Diagenesis facies of Permian sandy conglomerate reservoir in footwall of Kebai Fault in northwestern margin of Junggar Basin

ZHANG Shuncun1， LIU Zhenyu2， LIU Wei2， WU Tao2， SHI Jian1， JIA Fanjian1   

  1. 1.Key Laboratory of PetroleumResourcesResearch， Institute ofGeology andGeophysics，ChineseAcademy of Sciences， Lanzhou 730000，China； 2. Research Institute of Exploration and Development， Xinjiang Oilfield Company， PetroChina， Karamay 834000， China
  • Online:2010-12-15 Published:2010-12-15

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Abstract:

According to core observation, thin section analysis, scanning electron microscope, mud logging and well logging data, the rock type and the diagenesis of Permian sandy conglomerate reservoir in the footwall ofKebai Fault are studied. The results show that the main diagenesis in the study area are compaction, cementation and dissolution. Combined with the diagenesis stage, the Permian sandy conglomerate reservoir is divided into seven diagenetic facies, they are high mature-strong dissolution facies, high mature-strong cementation facies, high mature-middle cementationmiddle dissolution facies, high mature-weak compaction facies, high mature-strong compaction facies, lowmature-weak compaction facies and lowmature-strong compaction facies. Then, the forming conditions, the features, the environment, evolutionary sequence and model of each diagenesis facies are summarized. The reservoir properties of sandy conglomerate of different diagenesis facies are analyzed, and it is suggested that the high mature-strong dissolution facies has the most favorable reservoir properties.

Key words: converted wave static correction, surface model, construction time

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