- 责任者：Zeng Xiaoying (Exploration and Development Institute of Southwest Petroleum Branch Company ; SINOPEC ; Chengdu 610081) ; Zhang Xiaoqing
- 刊名：Acta Sedimentologica Sinica
- 出版年：2007
- 卷期：25(6)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 四川 ; Sichuan Province
- 页码：p.896-902
- 图表：6 illus., 1 plate, 3 tables, 11 refs.
- 分类号：1003
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
On the basis of thin sections identification and data statistics, the lithology, diagenesis, petrophysical properties and pore development properties for calcarenaceous sandstone in Fenggu area are analyzed in detail. It is indicated from the research that calcarenaceous sandstone layers in Fenggu are characterized by large thickness of single sand body, high content of carbonate debris, low content of calcite and well-developed secondary pores. Major pore type is dissolved intergrnular pores; and natural gas is mainly produced from source rock of lower Triassic Maantang Formation, the third member of Xujiahe Formation (T3x3) and the forth member of T3x4. Gas layers of calcarenaceous sandstone are closely related to its diagenesis, which belong to digenetic trap. The form process of calcarenaceous sandstone gas layers in Fenggu area offers guidance for exploration of similar lithologic gas reservoirs.