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《Natural Gas Geoscience》 2013-06
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Forced Regression System Tract and Characteristics of Ledong Area in Yinggehai Basin

ZHANG Rui;SUN Zuo-xing;WANG Ying-chao;Research Institute,Shaanxi Yanchang Petroleum(Group)Corp.Ltd.;Research Institute of Petroleum Exploration and Development,PetroChina;CNOOC Energy Technology & Service-oilfield Engineering Research Institute;  
In the mid-shallow formations of Ledong area of Yinggehai Basin,forced regression system tracts are widely developed.According to the comprehensive analyses of sediments,seismic,logging,core etc.,it is proposed that forced regression system tracts are developed in shallow depositional environment.The depositional wedges prograde toward basin center along downdip direction of the continental slope in section and shorelines migrate toward basin center in turn with method of approximately paralleling in plane. Fine reservoirs include longshore bar,channel sandstone,turbidite sandstone.Forced regression system tracts in Ledong depression area possess the basic condition of forming large-scale oil and gas reservoirs and is strategically important to rolling exploration in the research area.
【CateGory Index】: P618.13
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