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在皇家学院井间试验场进行了跨井勘探,所确定的P波速度各向异性可与井中岩芯实验室测量值做适当的比较。井孔穿过了Namurian上部灰岩组的砂、页岩及碳酸盐岩沉积层序。在实验室测量了岩芯样品的垂直速度的水平速度,结果表明,页岩层P波各向异性超过了20％,而砂岩和灰岩仅有很小的各向异性。这些离散测量值与电缆数据结合使用可得到P波各向异性的测井记录。加入各向异性信息后,由井间数据集测得的旅行时和合成旅行时之间的拟合得到显著改进。这意味着P波的内在各向异性对频率的依赖性极小。跨井旅行时反演对良好的角度覆盖提出了
Cross-well exploration was conducted at the Royal College Interwell Test Site, and the P-wave velocity anisotropy determined can be properly compared with well core laboratory measurements in the well. The wellbore traverses the sand, shale, and carbonate sedimentary sequences of the Upper Namurian limestone group. The horizontal velocity of the vertical velocity of the core sample was measured in the laboratory and the results showed that the P-wave anisotropy of the shale layer exceeded 20%, while the sandstone and limestone had only small anisotropy. These discrete measurements combined with cable data provide P-wave anisotropy logs. With the addition of anisotropic information, the fitting between travel time and combined travel time, measured by cross-well data sets, is significantly improved. This means that the inherent anisotropy of the P-wave has a very small dependence on frequency. The inversion of cross-well travel was proposed for a good angle of coverage