摘要
测试储集层岩石孔隙结构的常规方法是压汞和铸体的薄片图像分析法,气体泡压法利用流体在孔喉内流动的物理规律来测定孔隙结构特征,能较真实地反映流体通过喉道的实际情况。对比分析气体泡压法与压汞法测试结果,后者测试出的主流孔喉直径是前者的2～4倍,前者测试储集层中参与渗流的有效喉道的分布特征,且更切合工程实际需要;对岩样酸化前后以及含水敏性矿物的岩样在水化前后的有效喉道分布进行了对比分析,能够明显地表征出酸化及水化前后有效喉道分布特征的变化情况,测试结果的对比性强、价值高。气体泡压法为测试储集层孔隙结构提供一种新方法和新途径。
The conventional methods for testing reservoir pore structure are mercury penetration and cast thin slice analysis.Gas bubble-pressure method is based on physical law of liquid flowing in pore,which can truly reflect the reality of liquid flowing through throats.The results of gas bubble-pressure and mercury penetration is compared with those of mercury in the paper.The tested main pore throat diameter of the latter is 2-4 times larger than the former's.However,the distribution features of effective throat participating in flow through porous media tested in the former is more correspondent to project needs.It can obviously characterize the differences between effective throat distribution features of rock samples before and after hydration or acidizing,so the results have powerful comparability and high value.Gas bubble-pressure method provides a new way to test reservoir pore structures.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期17-20,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油天然气集团公司中青年科技创新基金项目(06E1019)
四川省教育厅青年基金项目(2006B061)
关键词
气体泡压法
压汞法
储集层
孔隙结构
有效喉道
gas bubble-pressure method
mercury penetration methods
reservoir
pore structure
effective throat
