• 责任者：Gao Hui (College of Petroleum Engineering ; Xi’an Shiyou University ; Xi’an 710065 ; China) ; Sun Wei
• 刊名：Rock and Mineral Analysis
• 出版年：2011
• 卷期：30(2)
• 关键词：砂岩储集层 ; sandstone reservoirs ; 储层性质 ; reservoir properties ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.244-250
• 图表：9 illus., 4 tables, 25 refs.
• 分类号：1003
• issnNo：ISSN0254-5357
• isbnNo：CN11-2131/TD

In order to study the relationship between micro-pore throat characteristics and physical property difference, drill core samples of extra-ultra low permeability sandstone from a reservoir in the Yanchang group of the Ordos Basin were selected for physical property analysis, cast section, SEM and mercury penetration techniques. The results indicate that throat type in an extra-ultra low permeability sandstone reservoir is versatile and minute. The content of major throat which makes a dominant contribution to permeability is low, which is the main reason for poor physical property. Physical property is the combined result of the mutual effect of multiple factors. Permeability presents large deviation when the reservoir space is composed of different pore throat types.