Lithologic Reservoirs ›› 2019, Vol. 31 ›› Issue (1): 78-86.doi: 10.12108/yxyqc.20190109

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Reservoir characteristics of Changxing-Feixianguan Formation in northeastern Sichuan area

LIU Yanting   

  1. Research Institute of Exploration, Sinopec Exploration Company, Chengdu 610041, China
  • Received:2018-09-10 Revised:2018-11-02 Online:2019-01-18 Published:2019-01-18

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Abstract: In order to study the reservoir characteristics and main controlling factors of reservoir differences in Zhenba and eastern Nanjiang-Heichiliang areas in Heichiliang platform of northeastern Sichuan Basin,the observation and description of outcrops and newly added drilling cores,identification of common and cast thin sections of rocks,reservoir property test and seismic interpretation,were carried out to systematically compare and analyze the reservoir lithology,space,thickness and properties of Changxing-Feixianguan Formation in eastern NanjiangHeichiliang and Zhenba areas from the aspects of sedimentation and diagenesis,and their causes were analyzed. The results show that the two areas have some similarities in reservoir lithology,thickness and reservoir performance,but there are also some differences. Paleogeomorphology,basement faults,diagenesis and tectonism are the key factors causing reservoir differences. The research results can provide geological basis for the next oil and gas exploration in northeastern Sichuan Basin.

Key words: reservoir characteristics, cause of difference, Changxing-Feixianguan Formation, northeastern Sichuan area

CLC Number: 

  • TE122
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