• 责任者：Ma Limin (School of Geosciences and Technology ; China University of Petroleum ; Qingdao 266555 ; China) ; Lin Chengyan
• 刊名：Xinjiang Petroleum Geology
• 出版年：2013
• 卷期：34(2)
• 关键词：成岩作用 ; diagenesis ; 结晶岩类储集层 ; crystalline reservoirs ; 塔里木盆地 ; Tarim Basin
• 页码：p.165-168
• 图表：illus., 12 refs.
• 分类号：1003
• issnNo：ISSN1001-3873
• isbnNo：CN65-1107/TE

The cores, thin-section and SEM data were used to research the diagenesis of volcaniclastic rocks and its effects on reservoir quality of Tongbomiao formation in Tanan sag in Inner Mongolia. The results show that the volcanielastic rocks of Tongbomiao formation mainly consist of ignimbrite, tuff, tuffites, tuffaceous sandstone and tuffaceous conglomerate. In addition to the compaction, cementation and dissolution, the diagenetic characteristics of the volcanoclastic rocks are of peculiar properties, compared with normally sedimentary elastic rocks, such as clinkering process, devitrification and reerystallization. The clinkering and devitrification processes result in abun- dant secondary pores which improve the physical property of the reservoir. The existence of microcrystalline quartz cladding is beneficial to the conservation of primary intergranular porosity. The compaction and the carbonate cementation are mainly factors to allow the reservoir quality to be poor.