Analysis on Controlling Factors of Oil/Gas-Bearing Properties of Fault-Related Traps in Rifting Basins --Takinc Tanan Sac in Hailar-Tamtsag Basin as an Example

详细信息   

• 责任者：Qu Yonghong (China University of Petroleum ; Changping 102249 ; China) ; Fu Xiaofei
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2011
• 卷期：30(1)
• 关键词：断陷盆地 ; fault-downwarping basins ; 油气藏形成 ; reservoir formation ; 海拉尔盆地 ; Hailar Basin
• 页码：p.38-46
• 图表：11 illus., 17 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

In the Middle-west of Tanan Sag, the typical fault trap is developed, and the typical fault-screened reservoirs are formed. Under the prerequisite of existing hydrocarbon sources, there are three factors that influence oil/gas bearing properties of fault-related traps ： the first one is the degree of hydrocarbon filling; the second is the lateral seal ability ; the third is the degree of late reformation. The degree of hydrocarbon filling displays as the coupling of ＂hydrocarbon supplying＂, ＂transporting＂ and ＂accumulating＂ There are two effective hydrocarbon supplying patterns： the continuous hydrocarbon supplying by lateral migration and the high effective faulting aggregation after early scattered aggregation of source rock with thin sand-shale interbeds. Only when these three conditions match reasonably, the large scale hydrocarbon accumulation can be realized.