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偶极子横波测井仪接收器为一四极子接收源， 即可视为方向互相垂直的两个偶极子接收器， 当垂直分量信号的振幅式能量为０ 或最小时， 平行分量信号反映地层快、慢横波的传播特征。四分量旋转变换法利用该原理对偶极横波成像测井（ＤＳＩ） 记录的偶极横波资料进行处理， 在各向异性的地层中， 通过分离出的快、慢横波的时差和波至时间， 计算出地层各向异性系数， 评价地层各向异性。实际资料处理结果表明快、慢横波的时差和到达时间可有效显示地层的各向异性。
Dipole Transverse Logger Receiver is a quadrupole receiving source, which can be regarded as two dipole receivers whose directions are perpendicular to each other. When the amplitude energy of the vertical component signal is 0 or minimum, the parallel component signal Reflects the fast, slow shear wave propagation characteristics. The four-component rotation transformation method uses dipole-shear-wave imaging logging (DSI) to record dipole-shear data by using this principle. In the anisotropic formation, the time difference and wave arrival time of fast and slow shear waves are calculated The formation anisotropy coefficient, evaluation of formation anisotropy. The actual data processing results show that the time difference and arrival time of fast and slow shear waves can effectively reveal the anisotropy of formation.