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

Abstract

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

CLC Number:

TElll.3

HU Tao, CHEN Su. Relationship between the Sequence Stratigraphy Framework and Petroleum Accumulation in Lower Member of Xingouzui Formation, Eastern Jianghan Basin[J]. Xinjiang Petroleum Geology, 2005, 26(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

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