世界深水勘探特点及中国深水勘探现状分析

深水勘探具有5大特点,即盆地类型以被动陆缘盆地为主,勘探区带以有油气发现浅水油气区的延伸深水区为主,圈闭类型以大型构造为主,储层以第三系深水扇体类型的高孔高渗储层为主,油气类型以油为主。我国目前的深水勘探区域主要分布于南海海域,又可进一步细分为南海西部海域、南海东部海域、南海南部海域。南海西部深水区圈闭条件较好,总体上属相对较高风险区。南海东部深水区与南海西部深水区条件基本相似,因此,从近期来看,该区的勘探条件同样不很成熟;但从长远来看,该区有一定的勘探潜力。南海南部深水区与南海北部深水区条件差别较大,从近期来看,该区的勘探条件较为成熟,勘探潜力大。但随着世界深水勘探的成熟,对地质风险的承受能力增强,南海北部深水区将成为可勘探的油气区。

Characters of World Deep-water Exploration and Current Situation of Deep-water Exploration in China

Deep-water exploration has 5 characters,which include that basin types are dominated with passive marginal basins,exploration zones are mainly in extended deep-water zones with oil-bearing zones in shallow-water,types of traps are mainly of large structures,and reservoirs are high permeability reservoirs with tertiary deep fans,oil type is dominated with oil.Deep-water exploration zones in China are mainly distributed over South China Sea(SCS),which can be divided into the west of SCS,the south of SCS.Trap condition is better in the west of SCS,it belongs to high risk area totally,condition in the east is similar with that in the west,of which exploration condition is not mature of both,but judging from long aspects,certain exploration potential exists,great differences-exist between the south and north deep water areas.Seeing from recent situation,exploration condition is available with big exploration potential.With the development of world deep-water exploration and enhanced capacity of risk resistance,the north deep-water area will be the hydrocarbon exploration area.