Xinjiang Petroleum Geology ›› 2005, Vol. 26 ›› Issue (2): 158-161.

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Relationship between the Sequence Stratigraphy Framework and Petroleum Accumulation in Lower Member of Xingouzui Formation, Eastern Jianghan Basin

HU Tao, CHEN Su   

  1. Research Institute of Exploration and Development, Jianghan Oilfield Company, Sinopec, Qianjiang, Hubei 433124, China
  • Received:2004-07-01 Online:2005-04-01 Published:2020-08-24

Abstract: The lower member of Xingouzui formation is the major exploration target stratum in eastem Jianghan basin, and mainly consists of one 3-order sequence (SⅢ1). The pool -forming geological elements, reserves and reservoir types distribute in the sequence stratigraphic framework. Source rocks are found mostly in transgressive system tract (TST) of SⅢ1, whilst sandstone reservoirs occurs in lowstand sys-tem tract (LST) of it. There are regional sealing and partial sealing in SⅢ1, which vertically formed three types of source -reservoir cap rock combinations. The proved reserves pri marily distribute in the IST, secondly in the TST. Each system tract of SⅢ1 has different pool-forming types for diferences in reservoir conditions

Key words: Jianghan basin, sequence stratigraphy, stratigraphic classification, hydrocarbon accumul ation

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