Secondary Porosity Formation of Upper Paleozoic Low Porosity-Permeability Coal-Formed Gas Reservoirs, oft-com:office:smarttags" />Ordos Basin
详细信息
- 责任者：Zhang Wenzheng (Research Institute of Exploration & Development ; PetroChina Changqing Oilfield Company ; Xi’an 710018 ; China) ; Yang Hua
- 刊名：Petroleum Exploration and Development
- 出版年：2009
- 卷期：36(3)
- 关键词：低渗透储集层 ; low permeability reservoirs ; 次生孔隙 ; secondary pore ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.383-391
- 图表：10 illus., 3 tables, 12 refs.
- 分类号：1003
- issnNo：ISSN1000-0747
- isbnNo：CN11-2360/TE
摘要
An experimental device and flowchart were designed to carry out experiments simulating dissolution of anorthites, pyroxenes and amphiboles in acetic acid solution under different temperature and pressure conditions. Anorthites, pyroxenes and amphiboles all show features of erosion and dissolution, with Ca displaying the highest dissolution and Al and Si displaying the lowest dissolution among the major constituent elements. With increase in temperature, the dissolution rates of elements like Ca, Si, and Mg as well as the total dissolution amount of minerals can be remarkably increased, exhibiting a positive temperature effect.oft-com:office:office" />