岩屑泊松比实验测定仪

针对目前地层泊松比测定方法的局限 ,提出了利用上返岩屑压实测定地层泊松比的设想 ,并研制出岩屑泊松比实验测定仪。某油田已有的压实岩屑泊松比与实际声波测井资料计算泊松比对比发现 ,运用岩屑泊松比实验测定仪所得的实验结果与原始地层的泊松比有很好的一致性(两者的误差在± 5 %之间 )。利用该测定仪 ,可实现对钻井过程中上返岩屑的连续快速测定 ,大大降低工程取心所增加的钻井成本 ,还可为钻井施工在第一时间提供相关的地层信息

Test system for Posson's ratio of rock cuttings

In the light of the limit of the determining method of formation Poisson's ratio, a test system for Poisson's ratio of rock cuttings is developed based on a assumption of utilizing the compact returned rock cuttings to determine the Poisson's ratio. Test result shows that the value measured by the test system accords with the calculated value of the Poisson's ratio, and by using the measuring system, the drilling cost for coring is reduced greatly, and continuous and rapid determination of the returned cuttings can be realized.