南海北部陆架盆地隐蔽油气藏勘探

Exploration of subtle reservoirs in the northern shelf basins of South China Sea

张伟 武强 黄敬利

Zhang Wei Wu Qiang Huang Jingli

中国地质调查局资源评价部, 北京 100011; 中海石油有限公司深圳分公司, 广东深圳 518067

Department of Mineral Resources Assessment, China Geological Survey, Beijing 100011; Shenzhen Company, CNOOC, Shenzhen 518067, China

南海北部陆架盆地含有丰富的油气资源,其中非构造成因的隐蔽油气藏占总油气储量的1/3以上。因此,合理地开发这些隐蔽油气藏成为今后几年我国海洋石油所面临的突出问题。南海北部隐蔽油气藏主要类型以岩性、地层、潜山和底辟为主,而主要发育于盆底扇、斜坡扇、陆架边缘三角洲和碳酸盐岩等沉积体系内。因此合理地开发南海北部隐蔽油气藏,必须明确其发育环境进而认清其成藏机理,从而对其进行全面开发。

There are huge reservoirs in the northern shelf basins of South China Sea, in which more than 1/3 are non-structural subtle reservoirs. Therefore how to exploit these subtle reservoirs with reason is an important matter for our marine petroleum in the future. The main types of subtle reservoirs in the north of South China Sea are lithologic reservoir, stratigraphic reservoir, burial hill reservoir and diapir reservoir. The upgrowth depositional systems of these subtle reservoirs include submarine fans, slope fans, shelf margin deltas and carbonates rocks. Thus we must know the upgrowth environment and further recognize the reservoir mechanism for exploiting and exploiting completely the subtle reservoirs in the north of South China Sea.