- 责任者：Feng Chong (Tianjin Branch ; CNOOC ; Tianjin 300452 ; China) ; Wang Qingbin
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2013
- 卷期：32(5)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 成岩作用 ; diagenesis ; 辽宁 ; Liaoning Province
- 页码：p.31-35
- 图表：4 illus., 1 table, 18 refs.
- 分类号：1003
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
Comprehensively utilizing the data of cast thin section, scanning electron micrograph （ SEM ） , X-ray diffraction, cathodoluminescence/cathodeluminescence and physical properties, the petrological characteristics, di- agenesis, overpressure and secondary pore geneses and so on are figured out for Member 2 reservoir of Shahejie For- mation （ E2s2 ） in Structure Jinzhou 20-A. The results show that the sandstone types are mainly feldspathic sand- stone and lithic-feldspar sandstone, which have abundant content of preferring solution; the diageneses main refer to compaction, cementation, metasomatism and dissolution, which are typically characterized by early-stage carbon- ate cementation and later dissolution, the diagenetic evolution is within middle-A stage, which is lagging behind comparing the regional diagenetic evolution; the pressure sure and moreover the pressure coefficient decreases with line of E2s2 formation is parallel to the hydrostatic pres- the depth increases, as a overpressure connecting trans- mission. The dissolution ＆ redistribution of the carbonate cements in the overpressure mothballing box and the re- tardation of the clay minerals by the overpressure are the main controlling factors of the generation of the high-poros-ity belts in the deep part.