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Relationship Between Abnormal Pressure and Hydrocarbon Accumulation in Ying'er Sag,Jiudong Basin

KOU Ke-peng1, LI Yong-min1, LIU Guang-di2 (1.Research Institute of Exploration and Development, Yumen Oilfield Company, PetroChina, Yumen, Gansu 735200, China; 2.China University of Petroleum, Beijing 100083, China)  
Ying'er sag in Jiudong basin is characterized by well developed abnormal pressure environment. The distinct geologic characteristic is studied and the 3D abnormal pressure field is established using available sonic logging data and seismic impedance information of Ying'er sag. The feature of the fluid compartment is analyzed. In view of the relations between petroleum distribution and vertical abnormal pressure belt as well as the fluid potential and the petroleum migration and accumulation, the relationship between abnormal pressure and hydrocarbon accumulation is investigated and the favorable targets for petroleum exploration are given.
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