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近年来,国内地层油气藏的勘探已引起普遍关注。文章在前人研究的基础上,以不整合面为切入点,依据圈闭机制的不同,给出了地层圈闭新的划分方案,把地层圈闭划分为不整合面之上超覆型地层圈闭、不整合面之下遮挡型地层圈闭以及不整合面之间削截型地层圈闭。地层油气藏的形成与不整合强度、不整合结构有着密切的关系,文章从以上2个方面对地层油气藏的形成机制进行了分析。此外,文章还对不同类型地层油气藏的分布规律进行了总结,对其勘探提出了建议,并且指出了一些亟须发展的理论和技术。
In recent years, the exploration of stratigraphic reservoirs in China has drawn widespread attention. Based on the previous studies, based on the unconformity, this paper presents a new classification scheme of stratigraphic traps based on the different trapping mechanisms, and divides the stratigraphic trap into overlying strata above unconformities Trap, trapped stratigraphic trap below unconformity, and cut-off stratigraphic trap between unconformities. Formation of stratigraphic reservoirs is closely related to unconformity and unconformity structure. The formation mechanism of stratigraphic reservoirs is analyzed from the above two aspects. In addition, the article also summarizes the distribution rules of different types of stratigraphic reservoirs, puts forward suggestions for its exploration, and points out some theories and technologies that are in urgent need of development.