西南石油大学学报（自然科学版）2016，Vol.38Issue(6)：70-80,11.DOI:10.11885/j.issn.16745086.2015.05.01.02
鄂尔多斯盆地长7段致密储层微观特征研究
A Study on Microscopic Pore Characteristics of Tight Reservoir of Chang 7 Sedimentation Section of Yanchang Formation, Ordos Basin
张忠义 1陈世加 2姚泾利 3刘鑫 1赵应权4
作者信息
- 1. 西南石油大学地球科学与技术学院，四川 成都 610500
- 2. 中国石油长庆油田公司勘探开发研究院，陕西 西安 710018
- 3. 低渗透油气田勘探开发国家工程实验室，陕西 西安 710018
- 4. 中国石油长庆油田公司勘探开发研究院，陕西 西安 710018
- 折叠
摘要
Abstract
There lacks systematic research into the complex characteristics of tight oil reservoir in Ordos Basin. By means of core observation, test data analysis, constant speed mercury injection experiment, field emission and CT scanning etc., we studied the formation and characteristics of Chang 7 tight oil reservoir. The research suggests that tight oil reservoir consists of tight sandstone formation of traction current and gravity flow deposits of Chang 7 section of Yanchang formation, which is of poor reservoir property with fine granularity, thick reservoir, high brittleness, . Pore types are mainly intergranular pores and feldspar dissolved pores which are mainly micro-–nano-scale pores with flake-shaped and tube-shaped throats;due to the filling of clay minerals and organic matter, effective pore volume is small, but micro cracks are highly developed and are of good connectivity;lower limit of oil reservoir physical property is low, and fluid saturation is high.关键词
鄂尔多斯盆地/致密油/微/纳米孔隙/场发射/CT扫描Key words
Ordos Basin/tight oil/micro-pores and nano-pores/field emission/CT sanning分类
能源科技引用本文复制引用
张忠义,陈世加,姚泾利,刘鑫,赵应权..鄂尔多斯盆地长7段致密储层微观特征研究[J].西南石油大学学报（自然科学版）,2016,38(6):70-80,11.
