【摘要】 南海北部大陆架西区的莺-琼盆地、珠三拗陷,年代新、沉降快、沉积厚(上第三系及第四系沉积厚度逾万米)。盆地双层结构发育,不同时期张裂幕控制不同的生、储、盖组合。盆地内不但有陆相烃源岩,还有中新统的海相烃源岩。盆地内具高温高压环境,发育了大量的泥底辟构造,高温高压对本区油气的生成、运移和聚集带来了许多特色。盆地内发育了许多上百平方公里的大背斜、大砂体。大量的研究工作及勘探实践表明本区是一个具有良好勘探前景并以天然气为主的远景地区。莺歌海盆地的泥底辟构造带和①号断裂带、琼东南盆地的"黄金组合"以及珠三神狐A凹陷的深盆气是下步勘探的重点目标。更多还原

【Abstract】 The Yinggehai Basin, Qiongdongnan Basin and Zhu Three Depression of Pearl River Mouth Basin are young marine sedimentary basins. They are characterized by high subsidence rate and great thickness with more than 10 km of Neogene and Quarternary. There are not only nonmarine source rock but also miocene marine one. A high temperature and high Pressure environment exists under 3km and a group of diapir structrues develope in the depocenter of the yinggehai Basin. The environment plays an important role to the generation,migration and accumulation of petroleum. A number of huge sand bodies and anticlnes with areas more than 100km~2 have been found. The existing exploration activities indicate the area is a good prospective for gas the diapir structure areas and the No. 1 Fault Zone of the Yinggehai Basin,the "Golden combination" of the Qiongdongnan Basin and the "Deep Basin Gas" of the Zhu Three Depression are the Key farget areas of next step.更多还原