Method for separating variable offset vertical seismic profile (VSP) wave fields
A technology of variable offset distance and wave field separation, which is applied in the field of seismic exploration data processing, and can solve the problem that it is difficult to separate the two
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[0129] Effective separation of up-going waves and down-going waves is a basic task of VSP data processing. Only by correctly identifying, separating and extracting up-going waves and down-going waves can the useful information of VSP be fully utilized to supplement the insufficiency of ground exploration and contribute to structural exploration, Lithology exploration and oil and gas development services. The main basis for separating the upgoing and downgoing waves recorded by the VSP is the difference in their apparent velocities.
[0130] Discrete Radon transform is an improvement in the early stage of seismic exploration when linear Radon transform is the main method. Parabolic Radon transform has obvious effects on suppressing linear interference waves, multiple waves, and separating longitudinal and transverse waves. But because the reflected wave event of seismic data is mostly a hyperbola, it becomes an ellipse in the transform domain. Although the difference in velocit...
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