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《Acta Petrolei Sinica》 2004-06
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Analysis on tectonic evolution and exploration potential in Dabashan foreland basin

WANG Ze-cheng 1 ZOU Cai-neng 1 TAO Shi-zhen 1 LI Jun 1 WANG Shi-qian 2 ZHAO Chao-yang (1.Research Institute of Petroleum Exploration and Development, PetroChina,Beijing 100083,China; 2.Research Institute of West-South Oil Company, PetroChina, Chengdu 610051,China; 3.The Forth Oil Recovery Plant,Huabei Oil Field Ltd., Langfang 065001,China)  
On the basis of outcrop survey,seismic interpretation and a lot of coring data,the evolution and exploration potential of Dabashan foreland basin were analyzed. This foreland basin was formed in the mid-Yanshan cycle and underwent four stages including J 1—J 1 2 depression stage,J 2 2—J 3 foreland basin stage, K 1*.N basin shrunk and final deformation of thrust-folded end in Himalayan period. In this basin, two sets of high-quality resource rocks developed in the Daanzhai Formation and Lianggaoshan Formation have high abundance of organic matters which mainly contain Ⅱ 1 type and Ⅱ 2 type kerogen. The favorable assemblages of source-reservoir-cap rocks in Jurassic include self-generated and self-reservoir type Daanzhai Formation and Lianggaoshan Formation as well as lower-generated and upper-reservoir type lower Shaximiao Formation. The favorable plays include the thrust belt in Dabashan area,sag in the north Sichuan province and uplift in the central Sichuan province.
【Fund】: 国家重点基础研究规划项目 (2 0 0 1CB2 0 91 0 0 );; 中国石油天然气股份公司科技攻关项目资助
【CateGory Index】: P631.4
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