TI介质中三分量转换波的速度比研究

对TI介质中三分量转换波的速度比进行了研究，给出了转换波速度比求取的系列公式；通过推证得出VTI与HTI介质中速度比与裂缝隙同测线的夹角无关，TI介质速度比的计算不受裂缝、隙方位角影响.对速度比误差的讨论表明，转换波速度较小的误差可给转换波速度比带来较大的误差，而当P波速度和转换波速度均含有误差且误差方向相同时，速度比的误差率可相对减小；当P波速度的误差率和转换波速度的误差率相同时，可消除速度比的误差.

Study of three component converted wave velocity ratio in TI media

Studied the velocity ratio of the three component converted wave in TI media, and given the calculation formulas of the velocity ratio of converted wave. Through analysis, it reveals that the velocity ratio in the VTI and HTI media has no relation to the fracture azimuth angle, and which calculation will not be influenced by the fracture azimuth angle. The error discussions of the converted wave velocity ratio show that a small error of the converted wave can bring a big error into the velocity ratio, but the error requirement may be lowered when the error of the P wave velocity and the converted wave velocity increase or decrease at the same time. And the error will be erased when the error rate of the P wave and the converted wave velocity are equal.