3-D harmonic-source reverse time migration systems and methods for seismic data analysis

摘要

Computing device and method for processing seismic traces to produce an image of a subsurface area. The method includes receiving a series of seismic traces related to the subsurface area and recorded by one or more seismic receivers, wherein the one or more seismic sources are originally generated by a source; applying a phase encoding function to the series of seismic traces, at least a portion of said seismic traces comprise signals reflected by geological interfaces of the subsurface area; applying a 3 dimensional (3D) harmonic-source reverse time migration of the series of seismic traces encoded with the phase encoding function; computing a forward wavefield by solving a first wave equation; computing a backward wavefield by solving a second wave equation; and cross-correlating the forward wavefield with the backward wavefield to generate an image of the subsurface.

主权项

1. A method for processing seismic traces to produce an image of a subsurface area, said method comprising:
receiving a series of seismic traces related to the subsurface area and recorded by one or more seismic receivers; applying a 3 dimensional (3D) phase encoding function to the series of seismic traces to generate a 3D harmonic-source migration (h3D), wherein at least a portion of the series of seismic traces comprises signals reflected by geological interfaces of the subsurface area; computing a forward wavefield based on the 3D phase encoding function; computing a backward wavefield based on the 3D harmonic-source migration (h3D); and cross-correlating in a computing device the forward wavefield with the backward wavefield to generate an image of the subsurface.