应力敏感性是指多孔介质孔隙体积（孔隙度）、渗透率随有效应力变化的该变量。研究储层孔隙体积、渗透率随有效应力的变化规律对于储量计算、储层保护和合理开采制度的确定等具有十分重要的意义。 渗透率随有效应力的变化关系为： 式中，k-渗透率； -初始渗透率； -应力敏感性系数； -原始地层压力；p-地层压力。
The results of experiment show: bigger stress sensitivity is had by mechanical properties of coal contained gas, and the obvious ductility and nonlinear characteristics are showed by coal because the gas exist.3.
试验结果表明,含瓦斯煤样的力学性质具有较强的应力敏感性,同时瓦斯的存在使煤样材料变形表现出明显的延性和非线性。
参考来源 - 含瓦斯煤失稳破坏及声发射特性的理论与实验研究The problem of low precision of in-stress measurement for carbonate formation caused by time and stress sensitivity is solved. The proposed method improves stress measurement system and provides basic data for the efficient exploitation of carbonate formation.
该法应用于西部某油田地应力测量,解释出的地应力结果精度满足工程应用的要求,解决了时间、应力敏感性带来的碳酸盐岩地应力测量精度低的难题,完善了地应力的测量体系,为碳酸盐岩地层高效开发提供了基础数据。
参考来源 - 碳酸盐岩声发射地应力测量方法实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
推荐使用应力敏感性系数来度量储层的应力敏感程度。
We state to use stress sensitive coefficient to characterize stress-sensitivity of different reservoirs.
研究结果表明具有大的应力敏感性的非晶带材料可用来制作力传感器。
The research results show the force sensors can be constructed using amorphous alloy materials with high stress sensitivity.
储层岩石渗透率受应力变化而减小的现象称为储层岩石的应力敏感性。
The phenomenon of the decrease in reservoir rock permeability owing to the change in stress is called reservoir rock stress sensitivity.
应用推荐