Prediction of surrounding rock permeability in tunnel is the base of estimating the water gushing yield for deep lying tunnel.
围岩渗透性预测是深埋隧道涌水量评估的重要基础。
With development of the coalbed methane, the shrinking function of the coal base material would enlarge the permeability of the seam.
随着煤层气的开采煤基质的收缩作用增大了煤层渗透性。
Formation damage in recovery process of A-Nan low permeability sandstone reservoir is thoroughly studied on base of analysis of production performance and cores.
在分析生产动态和岩心分析基础上，对阿南低渗透砂岩油藏开发过程中的储层伤害做了较为深入的研究。
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