用Mohr-Coulomb破坏准则预测最小水平主应力的实验方法
Petroleum Exploration and Development(2003)
Abstract
通过岩石力学实验,测定岩样的内聚力、摩擦系数和单轴抗压强度等岩石力学参数,可以用常规的Mohr-Coulomb破坏准则确定最小主应力.采用长庆油田、二连油田、吉林油田和四川盆地、塔里木盆地以及委内瑞拉将要进行水力压裂施工的砂岩地层的岩样,用该方法测定最小主应力,将测定结果与长源距声波测井和微压裂测定结果对比,误差一般为2~3MPa,证实这是一种经济可靠的方法.图1表1参12
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Key words
in-situ,mohr-coulomb
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