表层多波模型调查方法

Surface layer structure multi-wave investigation method

为满足多波勘探中转换横波静校正的需要,开展了以多波微测井为主的表层多波模型调查方法研究。按照传统叩板式横波震源原理研制了实用的横波激发装置,分析了横波敲击激发系统的稳定性及其与雷管激发方式的时差,总结了横波激发、接收、处理及解释的技术方法,形成了一套以研制SH横波震源为重点的表层多波模型调查方法技术。通过川西XC地区现场数据采集,验证了方法的可靠性。将上述方法获取的横波静校正量应用于研究区三分量地震勘探资料采集现场监控资料处理,使该区转换横波剖面叠加效果得到了显著改善。

In order to satisfy the requirements of shear wave static correction in multi-wave exploration,the surface layer structure multi-wave investigation method were studied mainly by multi-wave uphole.According to the principle of conventional knocking plate type shear wave vibrator,we have tentatively studied on shear wave shooting device.It is analyzed that the stability of generating shear wave of the device and methods of correcting time difference stimulated by detonator.We obtained a mass of detailed technical methods about shooting including receiving,processing and interpretation techniques and the surface layer structure multi-wave investigation method is generated.The reliability of this method was verified by the field data acquisition in XC region of western Sichuan Basin.The values of shear wave static correction by the method were applied to field monitoring data processing of three-component seismic data acquisition.It shows that the converted shear wave stack sections were obviously improved.