环顾南海,北有珠江口盆地与莺歌海盆地,西有湄公盆地(Mekong Basin),南有婆罗洲西北盆地(Northwest Borneo Basin)或称文莱—沙巴盆地(Brunei-Sabah Ba-sin)与巴拉望盆地(Balaoan Basin)。除了南海东部边缘的菲律宾岛弧西侧为马尼拉海沟外,上述这些陆架边缘盆地都围绕着中间的深海洋盆地分布,沉积了很厚的第三系,发现了一批重要的油气田或含油气构造,以其丰富的石油资源为世人所瞩目。随着勘探活动的增强,我国南海北部的沉积盆地,完成了地震普查,钻探了一些构 Looking around the South China Sea, there are the Pearl River Mouth Basin and the Yinggehai Basin in the north, the Mekong Basin in the west, and the Brunei-Sabah Ba-sin in the north of the Borneo Basin (Northwest Borneo Basin) And the Balaoan Basin. Except for the Manila trench to the west of the Philippine island arc on the eastern margin of the South China Sea, these shelf margin basins are distributed around the middle deep oceanic basins, depositing very thick Tertiary and discovering a number of important oil and gas fields or petroleum-bearing structures , With its rich oil resources for the world attention. With the enhancement of exploration activities, the sedimentary basins in the northern part of the South China Sea have completed the earthquakes survey and some structures have been drilled