| 低渗储层砂岩应力敏感性实验研究与分析 |
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| 引用本文： | 张熙,单钰铭,洪成云,郭静妹.低渗储层砂岩应力敏感性实验研究与分析[J].新疆石油天然气,2011,7(1):76-80,112. |
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| 作者姓名： | 张熙 单钰铭 洪成云 郭静妹 |
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| 作者单位： | 1. 成都理工大学"油气藏地质及开发工程"国家重点实验室,四川,成都,610059
2. 中国石油西南油气田分公司勘探开发研究院,四川,成都 |
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| 摘 要： | 本实验通过对某地区的深层低渗砂岩岩样进行气体渗透率的变围压测试,表明该地区深层砂岩存在渗透率应力敏感性:渗透率随着围压增大而减小,高渗透砂岩的渗透率比低渗透砂岩更具应力敏感性,且渗透率与围压的回归函数能很好地满足二项式关系。本文从岩石的材料属性和微观结构入手,分析了该地区岩样具有此应力敏感性的原因,并为该地区储层砂岩应力敏感性的研究和应用提供了实验依据。
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| 关 键 词： | 低渗透砂岩 应力敏感性 应力加载卸载 微观结构 弹塑性变形 |
EXPERIMENTAL RESEARCH AND ANALYSIS ON STRESS-SENSITIVE PERMEABILITY OF LOW PERMEABILITY RESERVOIR SANDSTONE |
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| Zhang Xi,Shan Yu-ming,Hong Cheng-yun,Guo Jing-mei.State Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu,SC ,China.EXPERIMENTAL RESEARCH AND ANALYSIS ON STRESS-SENSITIVE PERMEABILITY OF LOW PERMEABILITY RESERVOIR SANDSTONE[J].Xinjiang Oil & Gas,2011,7(1):76-80,112. |
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| Authors: | Zhang Xi Shan Yu-ming Hong Cheng-yun Guo Jing-meiState Key Laboratory of Oil Gas Reservoir Geology Exploitation Chengdu University of Technology Chengdu SC China |
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| Affiliation: | Zhang Xi,Shan Yu-ming,Hong Cheng-yun,Guo Jing-mei.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,SC 610059,China |
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| Abstract: | This experimental study by measuring the gas permeability of the low permeability deep reservoir sandstone samples in an area in the change of confining pressure,shows that reservoir sandstone in the area has the stress sensitivity of permeability: the permeability increases with decreasing the confining pressure,the stress sensitivity of high permeability core is larger than low permeability,the regularity of permeability changes is in accordance with Quadratic function.This article examined the reasons of... |
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| Keywords: | low permeability sandstone stress sensitivity Microcosmic structure stress unloading and loading elasticoplastic deformation |
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