Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (5): 55-66.doi: 10.3969/j.issn.1673-8926.2017.05.007

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Source-sink analysis and sedimentary facies of the first member of Liushagang Formation in WZA area,Beibuwan Basin

ZHANG Hui1, WU Zijin2, ZHOUWei1, YU Xinghe2, SUN Le2, HU Yong2, TAN Chengpeng2   

  1. 1. Zhanjiang Branch, CNOOC Ltd., Zhanjiang 524057, Guangdong, China;
    2. School of Energy Resources, China University of Geosciences, Beijing 100083, China
  • Received:2017-02-16 Revised:2017-04-06 Online:2017-09-21 Published:2017-09-21

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Abstract: There is no clear understanding of the types and distribution of sedimentary system of the first member of Liushagang Formation,which is major oil exploration target in WZA area of Weixinan Sag,Beibuwan Basin. It is difficult to correlation of continuity of sand bodies for further oil exploration. Combined with core,logging and seismic data,sedimentary system and sedimentary microfacies types were determined by the method of source-sink analysis. Three provenances,two types of sedimentary system and over ten types of sedimentary microfacies are identified in WZA area. The WZA is a catchment area around three provenances from direction of NWW,SWW and SEE. The meandering river delta sedimentary system developed in western and southern WZA, and turbidite fan sedimentary system developed in eastern WZA. The result is helpful for sweet reservoir characterization in oilfields of WZA,WZB,WZC,WZD and WZE.

Key words: clean fracturing flowback fluid, reutilization, performance evaluation, oil displacement potential, diaplacement mechanism

CLC Number: 

  • TE121.3
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