珠江口盆地白云凹陷天然气成因及油气资源潜力分析  

Origin of Nature Gas and Resource Potential of Oil and Gas in Baiyun Sag,Pearl River Mouth Basin

作　　者：崔洁[1] 何家雄[2] 周永章[1] 崔莎莎[2] 

机构地区：[1]中山大学地球科学系,中山大学地球环境与地球资源研究中心,广东广州510275 [2]中国科学院边缘海地质重点实验室,广东广州510640

出　　处：《天然气地球科学》2009年第1期125-130,共6页Natural Gas Geoscience

基　　金：国家重点基础研究发展计划(编号:2007CB41170501);中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-203-2)联合资助

摘　　要：白云凹陷是南海北部珠江口盆地最大的沉积凹陷,新生代最大沉积厚度超过12km,处在珠江口盆地新生代沉降和沉积中心,具备了油气运聚成藏的巨大沉积充填体系和基本地质条件。根据邻近深水区部分探井和深水区LW3-1-1井已获天然气组分、轻烃组成、碳同位素特征,对该区天然气成因类型及气源构成进行深入分析,并结合其油气成藏地质条件,初步分析了其资源潜力及勘探前景。Baiyun Sag is the largest sedimentary basin depression in the Pearl River Mouth Basin northern South China Sea, located at the center of subsidence and deposition of Tertiary in the basin, and the maxi- mum thickness of sediment is more than 12 km in Cenozoic era, in which there are a huge reservoir sedi- ment filling system and basic geological conditions for the migration and accumulation of oil and gas. Based on the component of natural gas and light hydrocarbon, as well as the characteristics of carbon isotope and hydrogen isotopes, acquired from adjacent exploration wells and LW3-1-1 well in deep water region, this article analyzed the origin of nature gas and the type of gas composition in this area, and also analyzed and discussed its resources potential and exploration prospects in combination with its oil and gas reservoir geological conditions.

关 键 词：白云凹陷 天然气成因 气源构成 资源潜力 勘探前景 

分 类 号：TE122.111[石油与天然气工程—油气勘探]