摘要
250多年的世界油气勘探表明,全球石油和天然气储量主要富集在少数的大型油气田中。2010年发现的Leviathan和Franco等一系列世界级大油气田,更是增强了勘探家对大油气田的勘探信心。研究新增大油气田的分布规律和成藏特征,对未来寻找大油气田更具有实践指导意义。通过搜集2007—2012年间新增的57个大油气田资料,在对新增大油气田分布特征、成藏条件和富集规律的分析基础上,结合典型油气田实例分析,总结了新增大油气田成藏特征和对今后的勘探启示。新增大油气田主要分布在21个盆地,上侏罗—下白垩统页岩是主要烃源岩,下白垩统是大油气田主力富集层位。海底扇和斜坡水道等浊积砂岩是大油气田的有利储集相带。泛特提斯域盆地的中生界和南大西洋两岸盐盆的下白垩统是未来寻找大型油气田的主要场所。
More than 250 years of petroleum exploration indicated that reserves of oil and gas are centralized in a minority of large oil and gas fields. In 2010, some world-class fields have been discovered, such as Leviathan and Franco, enhancing the confidence in discovering large fields. Research of new large fields in terms of distribution and accumulation potential may provide guidance for exploring potential large fields. Databases have been built for the 57 large fields discovered from 2007 to 2012. Based on analysis of the distribution, accumulation conditions and patterns of new large fields, this paper summarizes their accumulation characteristics and revelation to future exploration through instance analysis of typical fields. A majority of new large oil and gas fields are mainly distributed in 21 key basins. The Upper Jurassic-Lower Cretaceous is the major hydrocarbon source rocks, though a majority of reserves are distributed in Lower Cretaceous. Turbidite sandstones of subsea fans and slope channels are the further potential reservoirs for discovering large fields. Mesozoic of pan-Tethyan basins and Lower Cretaceous basins located in both sides of the south Atlantic ocean are the next areas for exploring potential large fields.
出处
《科技导报》
CAS
CSCD
北大核心
2014年第8期76-83,共8页
Science & Technology Review
基金
国家科技重大专项(2011ZX05030-001)
关键词
大油气田
石油地质
油气田勘探
油气田分布
large oil and gas fields
petroleum geology
petroleum exploration
fields distribution
