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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。
The Cenozoic of continental slope deep water basin in the northern South China Sea is located in the complex geodynamic environment at the margin of quasi-passive continental margin. It has the basic tectonic attribute of tensile rifting in the passive continental margin and the geological characteristics of petroliferous basins. The geological conditions for hydrocarbon accumulation and accumulation in the quasi-passive continental marginal basin in the South China Sea are basically similar to those in the deep-water oil and gas-rich areas in the typical marginal margin basins in the world, but there are also some differences and particularities. Therefore, by analyzing the geological background, tectonic attributes, hydrocarbon geologic conditions and hydrocarbon accumulation control factors of the typical passive continental marginal deepwater basin in the world, this paper systematically analyzes the special characteristics of petroleum geology and the factors controlling the migration and accumulation of deep-water basins in the northern South China Sea As well as the exploration of the key geophysical and geophysical issues. At the same time, some important enlightenments and references on deepwater oil and gas exploration have also been obtained through analogy.