Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (6): 1597-1607.doi: 10.13278/j.cnki.jjuese.201506104

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Demenstration and Analysis of Braided River Deposition in the Lower He8 Member in Western Sulige Gas Field

Shan Jingfu1, Zhang Ji2,3, Wang Jiping2,3, Zhao Zhongjun2,3, Li Fuping2,3, Chen Zhihua2,3, Shi Linhui2,3, Liu Lifeng2,3   

  1. 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, MOE, Yangtze University, Wuhan 430100, China;
    2. Research Center of Sulige Gas Field, Changqing Oilfield Company, PetroChina, Xi'an 710018, China;
    3. National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields, Xi'an 710018, China
  • Received:2014-12-02 Published:2015-11-26

Abstract:

The opinions to the sedimentary facies in the western Sulige gas field were so different that they lead to the big difficulty to forecast the sandbody distribution in exploration and development. We studied the sedimentary facies through adopting the techniques and methods of stone characteristics analysis, sedimentary structure description, and fossil observation; revealed sedimentary sequences of outcrop from Chengjiazhuang based on the facies logging and seismic reflection related to fluvial facies researched by predecessors in the Lower He8 Member. The research results show that the braided river deposition is the main facies type of the Lower He8 Member in Western Sulige Gas Field. In our opinion, the frequent climate change from dry to humid is the controlling factor,which resulted in the large thickness of sandbody, strong heterogeneity, and lateral variation of reservoir.

Key words: western Sulige gas field, braided river, Lower He 8 Member, sedimentary model

CLC Number: 

  • P618.13

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