Xinjiang Petroleum Geology

Xinjiang Petroleum Geology ›› 2010, Vol. 31 ›› Issue (6): 576-578.

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Sedimentary Sequences and Control on Gas Reservoir of Permian in Dinan Swell

SHI Xin-pu1,2, YAN Ze-jiang2, LI Chen2, LIAO Wei2, HU Qing-xiong2, HU Zong-fang2, LIU Ping2, CHEN Fang-hong3, FAN Tai-liang1   

  1. 1. School of Energy, China University of Geosciences, Beijing 100083, China;
    2. No.1 Gas Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    3. Beijing China Petroleum Technology Company Ltd., Beijing 100083, China
  • Received:2010-06-05 Published:2021-01-18

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Abstract: Using the data from cores, well logging, seismic profile and core lab, the sequence stratigraphy analysis and sedimentary facies identification of Wutonggou formation of Permian in Dinan swell in Junggar basin are conducted. The distribution and allocation relations of the sedimentary sequence system are studied, revealing the distribution regularity of the major gas reservoirs in this area. Wutonggou formation is divided into two third-order sequences—SQⅠ-1 and SQⅠ-2 ,SQⅠ-1 is sediment of braided river delta, mainly developing transgressive system tract (TST) and high system tract (HST), while SQⅠ-2 is flood plain sediment, mainly developing TST. SQⅠ-1 is the main producing gas reservoir section, in which the favorable oil-gas accumulation zones are mainly located in areas of channel sand and channel mouth bar in braded river delta front developed on the tectonic uplift.

Key words: Dinan swell, Permian, Wutonggou formation, sequence, sedimentary facies

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