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Analysis of reservoir Forming Conditions and Prediction of continuous tight gas reservoirs for the Deep Jurassic in the Eastern Kuqa Depression,Tarim Basin

引用

Acta Geologica Sinica(English Edition) 2011年第5期85卷 1173-1186页

作者： ZOU Caineng JIA Jinhua TAO Shizhen TAO Xiaowan Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China

The exploration targets in the Kuqa Depression at present are mainly structure traps in *** to the complexity of mountain distribution and reservoir forming conditions, the exploration of Jurassic in the eastern Kuqa Depression has been in a state of semi-stagnation since the discovery of the Yinan-2 gas *** to the concept and theory of 'continuous petroleum reservoirs' and the re-analysis of the forming conditions of the Yinan-2 gas reservoir and regional natural gas in the eastern Kuqa Depression,it is believed that the deep Jurassic has good natural gas accumulation conditions as well as geological conditions for forming continuous tight gas *** boundary of the Yinan-2 gas reservoir is not controlled by a structural *** downdip part of the structure is dominated by gas,while the hanging wall of the fault is filled by water and forming obvious inverted gas and *** gas reservoir has the normal temperature and ultrahigh pressure which formed in the near source or *** of these characteristics indicate that the Yinan-2 gas reservoir is different from conventional gas *** deep Jurassic in the eastern Kuqa Depression has multisets of source-reservoir-cap assemblages,which comprise interbedded sandstones and *** assemblages are characterized by a self-generation,self-preserving and self-coverage *** sandstones and coal measure mudstones are interbedded with each other at a large *** the source rocks,Triassic-Jurassic coal measure mudstones distribute continuously at a large scale and can generate and expel *** rocks contact intimately with the overlying sandstone *** the late stage of hydrocarbon expulsion,natural gas charged continuously and directly into the neighboring *** migrated mainly in a vertical direction over short *** ultra-high pressure and strong charging intensity,natural gas accumulat

关键词： forming condition continuous tight gas reservoir deep Jurassic eastern Kuqa Depression

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