世界主要深水含油气盆地烃源岩特征  

Characteristics of Hydrocarbon Source Rocks in Major Deepwater Petroliferous Basins in the World

作　　者：范玉海[1] 屈红军[1] 张功成 冯杨伟[1] 关利群[1] 雷露[1] 

机构地区：[1]西北大学大陆动力学国家重点实验室地质学系 [2]中国海洋石油研究中心

出　　处：《海相油气地质》2011年第2期27-33,共7页Marine Origin Petroleum Geology

基　　金：国家科技重大专项“南海深水区油气勘探关键技术”(编号2008ZX05025-06)基金项目

摘　　要：对墨西哥湾、巴西东部大陆边缘、西非被动大陆边缘、澳大利亚西北陆架、挪威中部陆架、南海等六个地区的22个深水含油气盆地烃源岩特征(主力烃源岩形成的时代、构造背景、沉积环境、类型、地球学化指标等)的综合研究结果表明,世界深水含油气盆地主力烃源岩主要集中在白垩系,其次为第三系和侏罗系;裂谷期烃源岩占绝对优势,其次为被动陆缘期;沉积环境以湖相和海陆过渡相为主,其次为海相。墨西哥湾、巴西东部大陆边缘和非洲西海岸的烃源岩以Ⅰ—Ⅱ型干酪根为主,澳大利亚西北陆架、挪威中部陆架和南海的烃源岩以Ⅱ—Ⅲ型干酪根为主。Characteristics of hydrocarbon source rocks of 22 major deepwater petroliferous basins in the world are researched and analyzed.The characteristics involve with formation geologic ages,tectonic settings,sedimentary environments and kerogen types as well as geochemical indexes.These basins distribute in the Gulf of Mexico,the eastern continental margin of Brazil,the passive continental margin of West African,the Northwest Shelf of Australia,the continental shelf of Mid-Norway and South China Sea.The comprehensively analysis indicates that the principal source rocks in these basins are mainly Cretaceous and subordinately are Tertiary and Jurassic in geological ages.They dominantly formed in rift stages and next in passive continental margin stage in tectonic settings,and mainly were lacustrine and transitional facies and following marine facies in Sedimentary environment.The kerogen commonly are TypeⅠand TypeⅡ in Gulf of Mexico,the eastern continental margin of Brazil,the passive continental margin of West African but TypeⅡand Type Ⅲ in the Northwest Shelf of Australia,the continental shelf of Mid-Norway and South China Sea.

关 键 词：全世界 深水盆地 含油气盆地 烃源岩特征 沉积相 成熟度指标 

分 类 号：TE112.113[石油与天然气工程—油气勘探]