西南石油大学学报（自然科学版）Issue(3)：105-110,6.DOI:10.3863/j.issn.1674-5086.2013.03.014
确定低渗岩芯气体启动压力梯度的一种新方法*
A New Method for Determining Gas Threshold Pressure Gradients in Low-permeability Rock
李中超 1李闽 2蒋雨江3
作者信息
- 1. 成都理工大学沉积地质研究院，四川 成都 610059
- 2. 中国石化中原油田分公司勘探开发研究院，河南 濮阳 457001
- 3. 西南石油大学石油工程学院，四川 成都 610500
- 折叠
摘要
Abstract
Many experiment results show that there exists a threshold pressure gradient when gas is percolating in low per-meability reservoir. As it is difficult to directly determine the threshold pressure gradient,the low-pressure and low-velocity percolation experiment is the usual method used to obtain the threshold pressure gradient. However,the effect of gas slippage under low pressure does not work under the formation condition. Thus there exist differences between the threshold pressure gradient value obtained by Wufan’s method and the actual results. In order to get a more accurate value of threshold pressure gradient,a new method which eliminates the slippage effect is presented this paper and provides a more accurate threshold pressure gradient for developing low-permeability gas fields.关键词
低渗透/气藏/渗流/启动压力梯度/气体滑脱效应Key words
low-permeability/gas reservoir/percolation/threshold pressure gradient/gas slippage effect分类
能源科技引用本文复制引用
李中超,李闽,蒋雨江..确定低渗岩芯气体启动压力梯度的一种新方法*[J].西南石油大学学报（自然科学版）,2013,(3):105-110,6.
