陆相断陷盆地成油气单元初探——以渤海湾盆地车西洼陷为例  

Preliminary Study on Oil-Gas Unit Formation in Continental Faulting-Depression Basin—an example from Shahejie formation in Chexi sag

作　　者：宋传春[1] 王如良[1] 

机构地区：[1]胜利石油管理局地质录井公司研究解释中心,山东东营257200

出　　处：《新疆石油地质》2001年第2期111-114,共4页Xinjiang Petroleum Geology

摘　　要：从生、储、盖层、遮挡物及构造特征等方面研究了渤海湾盆地车西洼陷沙河街组含油气系统中的油气运移和聚集，结合洼陷鼻状构造、弧形断层及砂体展布特征的分析，探讨了油气分布规律。将生、储、盖层与圈闭统一到一个基本成藏单元——成油气单元，并根据地质构造发育特征将其细分为一、二、三级，认为在含油气系统中油气的运移和聚集存在一个主要指向，油气分布及油气藏的形成受成油气单元的控制，表现为油气分布既有放射状分布特征，又有环带状分布形态，放射状与环状分布的径、环向复合构成了不同样式的油气分布格局，在一定程度上揭示了断陷盆地生油岩、砂体分布、构造特征与油气藏形成的内在联系。In view of various aspects of source bed reservoir rock caprock barrier and structural features this paper studied the oil-gas migration and accumulation of petroleum system of Shahejie formation in Chexi sag of Bohai bay basin． Furthermore combining the analysis of nose structure and arch-shape faults in the depression as well as the distribution of sand bodies we also discussed the oil-gas distribution． The author integrate the source rock reservoir rock caprock and trapment as an unified basic pool-forming unit—oil-gas pool forming unit． Then according to characteristics of geological structure it was subdivided into Ⅰ Ⅱ Ⅲ classes． It is considered that in petroleum systems there exists a principal orientation of oil-gas migration and accumulation namely the oil-gas distribution and formation unit which is dominated by oil-gas unit． It is represented by various kinds of oil-gas pool distribution patterns including radiating distribution form circular distribution form． And combined distribution the above two forms dominate the various types of oil and gas distribution． It revealed the internal relations to a certain degree of source rock of fault-depression basin sandbody distribution structures characteristics with the formation of oil-gas pools．

关 键 词：陆相断陷盆地 构造特征 车西洼陷 盖层 渤海湾盆地 油气分布 砂体分布 含油气系统 成藏 沙河街组 

分 类 号：TE122[石油与天然气工程—油气勘探] P618[天文地球—矿床学]