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全球被动陆缘深水区具有优越的石油地质条件,蕴藏着巨大的油气资源。目前,全球约有60多个国家在深水区开展油气勘探,已探明石油可采储量约300×108t。巴西近海、美国墨西哥湾、西非近海、亚太地区大陆边缘等4大被动陆缘富油气深水区正逐渐成为全球油气勘探的新热点,也是近几年大型油气田发现的重要领域。2000—2007年全球被动陆缘深水区(>300 m)共发现33个大型油气田,占全球同期发现的大型油气田的42%。在分析近年墨西哥湾深水区、巴西大坎普斯盆地、西非近海和澳大利亚西北大陆架的油气重大发现和探讨其含油气系统特征的基础上,对比了国内外被动陆缘深水油气地质特征,并讨论分析了国外被动陆缘深水勘探领域的大型油气田发现对我国南海油气勘探的启示意义及下一步勘探对策。未来几年,我国应将南海深水区油气勘探开发上升到国家战略的高度,加强勘探投入,开展重、磁、电、震联合采集与处理技术研究,建立适应南海地区特点的深水大型油气盆地勘查及综合评价技术系统,为深水油气勘探开发的全面展开提供技术支撑,并进一步加强深水区勘探目标评价与优选研究。
The global passive marginal deep water area has excellent petroleum geological conditions, contains a huge oil and gas resources. Currently, there are about 60 countries in the world to conduct oil and gas exploration in the Sham Shui Po area. It has proven that the recoverable oil reserves are about 300 × 108t. The four passive deep margins of deep oil and gas in the coastal areas of Brazil, the Gulf of Mexico, the west coast of Mexico and the continental margin of the Asia Pacific region are gradually becoming new hot spots in global oil and gas exploration and are also important areas discovered in large-scale oil and gas fields in recent years. A total of 33 large-scale oil and gas fields were found in the global passive margin continental margin (> 300 m) from 2000 to 2007, accounting for 42% of the large-scale oil and gas fields discovered in the world over the same period. Based on the analysis of major hydrocarbon discoveries in the deep waters of the Gulf of Mexico, the Campos Basin in Brazil, the offshore West Africa and the northwestern continental shelf of Australia in recent years, the geological characteristics of deep-water oil and gas in the passive continental margins are compared and discussed This paper analyzes the implications of the discovery of large-scale oil and gas fields in the deep-water exploration of passive continental margins and the exploration measures for the next step. In the next few years, our country should raise oil and gas exploration and development in the deepwater area of the South China Sea to the level of national strategy, strengthen exploration investment, carry out joint acquisition and treatment technologies of heavy, magnetic, electrical and seismic, and establish a deep-water large-scale oil and gas basin exploration that meets the characteristics of the South China Sea And comprehensive evaluation of technical systems to provide technical support for the full implementation of deep-water oil and gas exploration and development, and to further enhance the evaluation and optimization of exploration targets in deep-water areas.