湖盆坡折带_地层岩性圈闭勘探的新领域_英文_王英民.pdfVIP

2004 Petroleum Science Vol.1 No.2 Lacustrine Basin Slope Break — A New Domain of Strata and Lithological Trap Exploration 1,2 1,2 3 1 1 1 Wang Yingmin , Liu Hao , Xin Renchen , Jin Wudi , Wang Yuan and Li Weiguo (1 Basin Reservoir Research Center, University of Petroleum, Beijing 102249, China) (2 Key Laboratory for Hydrocarbon Accumulation of Education Ministry, University of Petroleum, Beijing 102249, China) (3 China University of Geoscinces, Beijing 100083, China) Received January 30, 2004 Abstract: Based on the studies of the Songliao Basin characterized by Cretaceous down-warping, of the Jurassic compressional flexural Junggar basin and of the Bohai Bay Basin characterized by Paleogene rifting, the multiple-grades slope break has developed in lacustrine basins of different origins. Their genetic types can be divided into tectonic slope break, depositional slope break and erodent slope break. The dominant agent of the slope break is tectogenesis, and the scale of slope breaks relates with the size of tectogenesis. The results of the study show that control of mutual grades slope breaks on atectonic traps mainly represent : 1) Atectonic traps develop close to mutual grades slope breaks, with beads-shaped distribution along the slope breaks. 2) In the longitudinal direction, the development of atectonic traps is characterized by the i