详细信息   

• 责任者：Li Haihua (Wuxi Research Institute of Petroleum Geology ; Exploration and Production Research Institute ; SINOPEC ; Wuxi 214151 ; China) ; Zhang Yanxia
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2010
• 卷期：29(5)
• 关键词：碎屑岩储集层 ; clastic reservoirs ; 成岩作用 ; diagenesis ; 次生孔隙 ; secondary pore ; 松辽平原 ; Songliao Plain
• 页码：p.29-34
• 图表：4 illus., 14 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

The clastic reservoirs in Changling faulted depression are primarily feldspathic lithic sandstone, arkose and lithic arkose of fan-delta, underwater turbidite fan and fluvial facies, accordingly. These sandstones have experienced mechanical compaction, cementation, denudation and metasomatic replacement. The denudation refers to the impact of organic acid formed by thermal mature evolution of organic matter and water of dehydration transformed from clay mineral on the lyotrope. The diagenesis stage could be divided into early diagenesis A and B, late diagenesis A, B and C. The denudation of faulted depression mainly occurred in late diagenesis A. The porosity types include primary porosity and secondary porosity formed by carbonate cements, feldspars and partly debris dissolutions. The secondary porosities, with the buried depth of 3 500 m in Yaoyingtai area （ Denglouku Formation） and 2 100 m, 2 400 m in Dongling area （ Denglouku Formation ) , are developed well, which is controlled by diagenesis evolution stage.