南海北部准被动陆缘深水区油气地质及与世界深水油气富集区类比

Analogy of Oil and Gas Geology between Quasi-passive Margin of Northern South China Sea and Global Oil and Gas Enriched Areas in Deep Water

南海北部陆坡深水盆地新生代处于准被动大陆边缘的复杂地球动力学环境,具有被动大陆边缘拉张裂陷的基本构造地质属性及含油气盆地的地质特征。南海北部准被动陆缘深水盆地油气运聚成藏地质条件与世界典型被动陆缘盆地深水油气富集区基本类似,但亦存在一定的差异性和特殊性。因此,通过与世界典型被动陆缘深水盆地区域地质背景及构造属性、油气地质条件及成藏控制因素等方面的类比,系统剖析了南海北部深水盆地特殊的油气地质特征与运聚成藏控制因素以及勘探上的关键地质地球物理问题,同时通过类比亦获得了一些有关深水油气勘探的重要启迪与借鉴。

Deep-water basin of northern South China Sea is under complex geodynamic setting of quasi-passive continental margin in Cenozoic,with a passive continental margin extensional tectonic rifting of basic properties and oil and gas geological features.Geological conditions for oil and gas migration and accumulation in the deep-water basin of quasi-passive continental margin in northern South China Sea is similar with some typical deep-water oil and gas-enriched area in global passive continental margin,but there is also some difference and particularity.In this paper,we discuss the special geological background for oil and gas in deep-water basin of the northern South China Sea,accumulation and migration of oil and gas,and geological and geophysical exploration,in comparison with regional geological setting and structural properties,geological condition,and oil and accumulation in deep-water basin of typical passive continental margin in the world.We also received some important suggestion and reference about oil and gas exploration in deep-water basin.