• 责任者：Wu Kongyou (Faculty of Geo-Resources and Information ; China University of Petroleum ; Qingdao 266555 ; China) ; Zhao Zhongxiang
• 刊名：Journal of Geomechanics
• 出版年：2012
• 卷期：18(1)
• 关键词：断层封闭性 ; fault sealing property ; 油气藏形成 ; reservoir formation ; 济阳坳陷 ; Jiyang Depression
• 页码：p.32-41
• 图表：7 illus., 21 refs.
• 分类号：1003
• issnNo：ISSN1006-6616
• isbnNo：CN11-3672/P

Xiakou fault plays an important role in controlling oil-gas accumulation in Huimin depression.By analyzing the lithologic association on two sides of fault, the mudstone-smearing and fault tightness index, Xiakou fault-sealing is studied quantitatively. The result shows that Xiakou fault sealing varies significantly in different locations. Based on the analysis of the fractured surface form of Xiakou fault, combined with the oil-gas migration simulation experiment, Xiakou fault is determined as the migration path in the south Huimin depression.It is found that Xiakou fault has two dominant migration channels, which contain most of the oil and gas. According to the relationship between faulting stage and hydrocarbon migration period of Xiakou fault, Xiakou fault accounts for the major oil and gas migration pathways in the south of Huimin depression, with the main hydrocarbon source rocks rowing in bulk. The complex closure property of Xiakou fault leads to the uneven oil-gas distribution in the south of Huimin depression.