The convergence of advanced computing technologies and innovative algorithm designs has made it possible to provide 3D wave equation depth migration methods to many explorationists. It is well known that the wave equation method can provide the full wavefield solution to most imaging problems. On the other hand, the Kirchhoff technique, which has become the industry's standard prestack depth migration (preSDM) algorithm, has some inherent limitations, such as diverging raypaths in steeply dipping areas where high lateral velocity contrasts exist. More accurate imaging in such challenging geologic conditions can often be addressed by a wave equation (WE) depth migration.


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