摘要:
南海南部曾母、文莱—沙巴盆地油气资源丰富,已发现一大批油气田及含油气构造。曾母盆地南部与文莱—沙巴盆地油气的生成、运移和聚集与婆罗洲地块息息相关。婆罗洲地块地质特征复杂,自古新世开始,古南海逐渐消失,与婆罗洲地块发生碰撞,中新世开始隆升造山。在这种地质背景下,婆罗洲拉让河和巴兰河为曾母盆地南部与文莱—沙巴盆地的主要物源,发育三角洲相、滨浅海相、浊积扇相、浅海相砂岩储层;同时,压扭型构造发育,不仅形成断块与背斜型油气藏,同时具有良好的油气运移条件。
Abstract:
The Zengmu Basin and Brunei-Shaba Basin of Southern South China Sea are rich in oil and gas resources. A large amount of oil and gas fields and structures have been found there. Facts show that the characteristics of hydrocarbon generation, migration and accumulation are closely related with the Borneo Block to the Southern Zengmu Basin and Brunei-Shaba Basin. The geology of the Borneo Block is complex. The ancient South China Sea disappeared gradually in Paleocene, and collided with the Borneo Block. The Borneo Block uplifted in Miocene. In such geological conditions, the Rajang River and Baram River in the Borneo Block were the major sources to supply sediments to the southern Zengmu Basin and Brunei-Shaba Basin. Deltas, coastal deposits, turbidite fans, and shallow marine sandstone reservoirs were developed. At the same time, the compression and twisting type of structures were widely developed. They provided not only the formation conditions for the fault block and anticline types of reservoir, but also the conditions for oil and gas migration.
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