Diagenesis of Devonian Donghetang Sandstones in Bachu Uplift, Tarim Basin
详细信息
- 责任者：Li Jianjiao (Petroleum Exploration & Production Research Institute ; SINOPEC ; Beijing 100083 ; China) ; Cao Zicheng
- 刊名：Petroleum Geology & Experiment
- 出版年：2012
- 卷期：34(2)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 成岩作用 ; diagenesis ; 塔里木盆地 ; Tarim Basin
- 页码：p.125-128
- 图表：1 plate, 1 table, 21 refs.
- 分类号：1003
- issnNo：ISSN1001-6112
- isbnNo：CN32-1151/TE
摘要
The thin sections of Devonian Donghetang sandstones from several typical wells in Bachu-Maigaiti area of the Tarim Basin were observed.Devonian Donghetang sandstones were during the middle and late stages of diagenesis.Few primary pores and fissures were found.Epidiagenetic dissolution and burial dissolution dissolved a variety of soluble and carbonate rocks,resulting in intragranular dissolved pores,moldic pores and enlarged dissolved pores.However,since the process of diagenesis was superimposed in the study area,the improvement of reservoir was limited and the physical property of Devonian Donghetang Formation was poor.