Technology and Application of Full Azimuth Angle Domain Migration

• DOI: 10.3997/2214-4609.202210238
• Publication Date: 2022-05-25T02:02:20Z
• Authors: S. Zang; X. Xu; Z. Yang; J. Wu; Y. Zhao
• Keywords: Seismic migration; SIGNAL (programming language); Magnetic dip

Summary Seismic data in complicated structures have low signal-to-noise ratio and strong lateral variable velocities, it is difficult to obtain the accurate subsurface images. The full-azimuth local angle domain prestack depth migration applies all wavefield within aperture build a at imaging point. It retains azimuth information of values different propagation directions, which can more accurately reflect underground points. Specular weighted function constructed using generated directional gathers improve image quality through specular stacking. On other hand, points, sub-dip sub-azimuth stacking are implemented specific dip or inclination. This method was applied area with steep complicate Western China, achieved good effect.