渤南洼陷断层封闭性评价——以义37断块为例  

Evaluation of fault sealing capacity in Bonan Sag-taking Yi37 fault block as an example.

作　　者：魏艳萍[1] 

机构地区：[1]中国石化股份胜利油田分公司地质科学研究院,山东东营257015

出　　处：《油气地质与采收率》2008年第4期36-38,共3页Petroleum Geology and Recovery Efficiency

基　　金：中国石化股份公司重点科技攻关项目"陆相断陷盆地油气成藏过程定量研究"(P06016)

摘　　要：断裂在油气成藏与分布中起到了非常重要的作用。它不仅仅可以圈闭油气,更重要的是作为连接烃源岩与圈闭之间的"桥梁与纽带"。渤南洼陷内断裂极其发育,它们对油气的运移、聚集以及油气藏的进一步分割起到了重要的控制作用。通过对渤南洼陷义37断块油藏的重点解剖,明确了断层在侧向和垂向上的封闭机理,运用净毛比、断层泥比率和断面压力等参数分析了断层的封闭能力,揭示了油气运移的方向和路径,并且认为义37断层在沙二段油气成藏过程中,侧向上起到了很好的封闭作用。Faults play an important role in the hydrocarbon accumulation and distribution.They can provide traps for hydrocarbon accumu- lation and act the role of bridge between source rocks and traps. In Bonan Sag,there are lots of developed faults,which exerted significant control on the migration,accumulation,and subse- quent compartmentalization of hydrocarbon reservoirs.In this pa- per,the important petroleum reservoirs such as Yi37 fault block were analyzed.The lateral and vertical fault sealing mechanisms were recognized.Fault sealing capacity was evaluated through many methods such as net-gross ratio,shale gouge ratio,and fault surface pressure,etc.The direction and ways of hydrocarbon mi- gration were discovered.And the faults have good lateral sealing during Es_2 hydrocarbon reservoir forming.

关 键 词：断层 侧向封闭性 垂向封闭性 油气运移 渤南洼陷 

分 类 号：TE111.2[石油与天然气工程—油气勘探]