基于路径积分叠加的方位各向异性校正分析

Azimuthal Anisotropy Correction Analysis Based on Path Integral Stacked Principle

炮检距向量片(Offset Vector Tile, OVT)技术作为宽方位地震资料的处理方法,可提供一个精确、有效的数据域来进行宽方位数据处理。首先介绍了分方位处理和消除方位各向异性的方法,然后针对目前宽方位地震资料处理效率和精度较低的问题,引入了基于路径积分叠加原理的方位各向异性校正方法,并给出了计算方法和流程,实现了剩余时差的自动校正。应用结果表明,利用自动高效的宽方位地震偏移分方位各向异性分析、校正方法,能够克服现有技术对信噪比要求较高、效率低的缺陷,在宽方位地震资料处理中有较好的应用前景。

As a processing method of wide azimuth seismic data, offset vector tile technology can provide an accurate and effective data field for wide azimuth seismic data processing. In this paper, the methods of azimuth processing and elimination of azimuthalanisotropy are introduced firstly. In order to solve the problem of low efficiency and accuracy in the processing of wide-azimuth seismic data, an anisotropy correction method based on the path integral staked principle is introduced, meanwhile, the calculation method and flow chart are given, realizing the automatic correction of the residual moveout is realized. The application results show that the automatic and efficient method of azimuthal anisotropy correction for wide azimuthal seismic migration can overcome the shortcomings of high signal-to-noise ratiorequirements and low efficiency of existing technology. Besides, it has good application prospects in wide azimuth seismic data processing.