新疆石油地质 ›› 2001, Vol. 22 ›› Issue (2): 111-114.

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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

宋传春, 王如良   

  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
  • 收稿日期:2000-05-24 出版日期:2001-04-01 发布日期:2020-08-13
  • 作者简介:宋传春(1960-),男,山东巨野县人,博士,从事油气勘探工作。

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

SONG Chuan-chun, WANG Ru-liang   

  • Received:2000-05-24 Online:2001-04-01 Published:2020-08-13
  • About author:SONG Chuan-chun(1960-), Male, Doctor, Oilfield Development, Research and Interpretation Center, Geologic Logging Company, Shengli Petroleum Administration Bureau, Dongying, Shandong 257200, China

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。

关键词: 生油层, 油气生成, 油气聚集, 油气运移, 油气圈闭, 鼻状构造

Abstract: In view of various aspects of source bed, reservoir rock, caprock, barrier and structural features, this pa- per 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.

Key words: source rock, oil and gas generating, oil and gas accumulating, oil and gas migration, oil and gas entrapment, nose-like structure

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