摘要
渤海湾盆地发育雁列式、帚状等多种构造体系类型且空间分布复杂,不同级序的构造体系控制了渤海湾盆地内油气聚集与分布,将渤海湾盆地划分为济阳及黄骅帚状油气区、下辽河—渤海弧形油气区、冀中和东濮雁列式油气区5个大型油气区。各油气区的油气聚集量及油气分布规律存在较大差异,其中济阳帚状油气区的油气资源最丰富,而东濮雁列式油气区的油气探明储量最小。古近纪是渤海湾盆地构造演化的最重要时期,与油气生成和成藏的关系最密切,是渤海湾盆地烃源岩发育的鼎盛时期,并发育多种油气藏类型和多套生储盖组合。新近纪发育以披覆构造油气藏为主的次生油气藏和良好的区域性盖层。渤海湾盆地复杂的构造演化形成多套生储盖组合,具备形成大型油气区的基本地质条件。
The Bohai Gulf basin is an important hydrocarbon base of China. In the basin many types of structural systems such as en-echelon and brush structural systems are developed and show a complex spatial distribution. The hydrocarbon accumulation and occurrence in the basin are controlled by different orders of the structural systems. Five hydrocarbon provinces, namely, the Jiyang and Huanghua brush hydrocarbon provinces, Lower Liaohe-Bohai arcuate hydrocarbon province and Jizhong and Dongpu enechelon hydrocarbon provinces, may be distinguished in the Bohai Gulf basin. There are appreciable differences in hydrocarbon amounts and distribution characteristics between the five hydrocarbon provinces. Among these hydrocarbon provinces, the Jiyang brush hydrocarbon province contains the most abundant hydrocarbon resources and the Dongpu en-echelon hydrocarbon province has the smallest reserves. The Paleogene was the most important stage of structural evolution in the Bohai Gulf basin and is most closely related to hydrocarbon generation and accumulation formation. In the stage, the development of source rocks reached the culmination and many types of petroleum accumulation and several source-reservoir-seal combinations occurred. The Neogene witnessed the development of secondary petroleum accumulations dominated by drape anticline accumulations and good regional cap rocks in the basin. The complicated structural evolution of the Bohai Gulf basin brought about the formation of multiple source-reservoir-seal combinations. So the basin possesses basic geological conditions for the formation of large hydrocarbon regions.
出处
《地质力学学报》
CSCD
2005年第3期259-265,共7页
Journal of Geomechanics
基金
中国石油天然气集团公司石油科技中青年创新基金(04E7041)
中国石油大学博士基金。
