【摘要】 孟加拉湾深水盆地位于印度洋东北部,是亚太地区深水油气勘探最有希望的盆地之一。以前人研究成果为基础,结合DSDP 217、218号钻孔资料,对孟加拉湾深水盆地石油地质特征作了初步分析,认为:孟加拉湾深水盆地地层可划分为3个地震层序,垂向上可识别出古印度陆隆和孟加拉扇2期沉积;构造演化与印度板块裂离冈瓦纳大陆过程密不可分;虽然有机质丰度较低,但已进入成熟区;孟加拉扇水下辫状河道砂体为良好的储集体,孟加拉扇中扇是岩性油气藏最有利的勘探区。更多还原

【Abstract】 Located in the Northeast Indian Ocean,the deep water basin of the Bay of Bengal is one of the most potential petroliferous basins in Asia-Pacific Region.Based on previous studies and the data of DSDP sites 217 and 218,this article deals with the petroleum geological characteristics of the deep water basin.The results show that(1) the strata of the basin can be divided into 3 seismic sequences,and two stages of sedimentation,the Bengal fan and pre-Bengal fan.(2) The tectonic evolution of the basin has close relation with the separation of Indian plate from Gondwana.(3) Even though the organic matter is low in the deep water basin,it has entered into the a mature stage.(4) Braided channel sandstone in the Bengal fan could be good reservoir bodies.In conclusion,there are possibilities to find lithologic oil and gas reservoirs in the Middle-fan of Bengal.更多还原