天然气与石油2017，Vol.35Issue(4)：58-62,5.DOI:10.3969/j.issn.1006-5539.2017.04.010
致密油碎屑岩储层分类方法探讨
Discussion on the Classification Method ofTight Oil Clastic Rock Reservoirs
金涛 1邹娟 1周春林 1陈龙 1乐园 1李秀清 1李育聪1
作者信息
- 1. 中国石油西南油气田公司勘探开发研究院, 四川 成都 610041
- 折叠
摘要
Abstract
The classification of conventional pyroclastic rocks in Chinese oil industry is often classified by the multiples of porosity.But unconventional oil and gas reservoirs, such as tight oil, have no uniform industry standard for tight reservoir classification.Generally speaking, oil has non-wettability and water has wettability for pyroclastic rocks.Therefore, oil and water will produce capillary pressure between the pore throat of tight reservoir and external environment which will promote oil and water flow.The flow rate is related to pore throat diameter, capillary pressure and buoyancy, which will cause the variation of oil and water saturation with porosity.The inflection point, extreme point or mutation point can be used as the boundary point of tight oil reservoir classification.Thus, the tight oil reservoir in the Sichuan basin can be divided into three kinds of tight reservoirs: fluid binding, capillary and oil-water balance.关键词
致密油/碎屑岩储层/分类标准/孔隙度/饱和度Key words
Tight oil/Pyroclastic rock reservoirs/Classification standard/Porosity/Saturation引用本文复制引用
金涛,邹娟,周春林,陈龙,乐园,李秀清,李育聪..致密油碎屑岩储层分类方法探讨[J].天然气与石油,2017,35(4):58-62,5.
