台西南盆地中新生界石油地质与油气勘探前景  

Petroleum Geology and Exploration Prospect of Mesozoic and Cenozoic in Taixinan Basin, Northern South China Sea

作　　者：何家雄[1] 夏斌[1] 陈恭洋[2] 孙东山 

机构地区：[1]中国科学院边缘海地质重点实验室,广州510640 [2]长江大学勘探系,湖北荆州434023 [3]中海石油南海西部研究院,广东湛江524057

出　　处：《新疆石油地质》2006年第4期398-402,共5页Xinjiang Petroleum Geology

基　　金：中国科学院知识创新工程项目(kzcx2-sw-117-03);中科院广州地球化学研究所所域创新项目;南海形成与演化及油气资源(GIGCX-03-07);国家自然基金(40306010)联合资助

摘　　要：台西南盆地是南海北部大陆架东区边缘盆地链上的中、新生代含油气盆地之一,与其西边的珠江口盆地相邻,处在中国近海陆架盆地天然气富集区带的有利位置,具有良好油气资源潜力和勘探前景。该盆地由北部凹陷、南部凹陷及中央隆起带等3个构造单元所组成。迄今为止,其勘探及研究程度较低,仅在中央隆起带中部勘探中发现了CFC、CFS及CGF等渐新统砂岩及中生界白垩系裂缝性储集层之含油气构造,且探井及研究亦主要集中于该区,其他区域则勘探及研究均十分薄弱。由于中央隆起带处在盆地中部区域上有利油气运聚的低势区,具有良好的油气运聚成藏条件,故迄今勘探发现的商业性油气均集中于该带,因此处于两凹之隆之中央隆起带应是该区最佳的油气富集区带及远景区,而加大勘探力度、全面解剖中央隆起带、深入研究其油气富集规律,则应是台西南盆地尽快获得油气勘探突破之关键。Taixinan basin, one of Mesozoic and Cenozoic petroliferous basins, is located in marginal basins of eastern continental shelf in northern South China Sea, adjacent to Pearl River Mouth basin. It is of good petroleum potential and exploration prospect for its vantage point with rich natural gas resources. This basin consists of such three structural units as north sag, south sag and central uplift zone. Because of less effort for its exploration and research, the petroliferous structures of CFC, CFS and CGF focusing in central uplift zone have been found so far, which belong to Oligocene sandstone reservoir and Cretaceous fractured reservoir. Because the central uplift zone is regionally situated in favorable petroleum migration area in center of the basin, with good petroleum accumulation conditions, the commercial oil and gas found so far are centralized within this zone. Therefore, the central uplift zone should be the best petroliferous abundance zone and prospective region. To take more efforts for exploration, make a thorough research of this zone and make in-depth studies of its hydrocarbon-enriched rule would be the key for quick breakthrough of Taixinan basin.

关 键 词：叠合盆地 隆起带 成藏条件 勘探 

分 类 号：TE111[石油与天然气工程—油气勘探]