Method for sharpening prestack depth migration images by removin

Details Method for sharpening prestack depth migration images by removin Method for sharpening prestack depth migration images by removin

1991-07-16

1992-07-07

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 51, 367 52, G01V 136

Patent

active

051288990

ABSTRACT:
A method for removing residual moveout includes sorting the results of common offset depth migration into common image point gathers. A subset of image point gathers are selected for analysis. Each common image point gather is separated vertically into windows, each of which centers on a strong event. For each window, all the offset traces are summed to produce a brute stack trace to be used as an anchor. All offsets are cross-correlated to the anchor to determine how much each trace window should be shifted to sum most constructively with the anchor. A set of dynamic shifts is produced, which when applied, will remove the residual moveouts and produce a truly flat image for stacking. These shifts vary with depth and offset and can be interpolated between the selected image point gathers.

REFERENCES:
patent: H482 (1988-07-01), Berryhill et al.
patent: 4206509 (1980-06-01), Ruehle
patent: 4241429 (1980-12-01), Bloomquist et al.
patent: 4736347 (1988-04-01), Goldberg et al.
patent: 4745585 (1988-05-01), Larner
patent: 4766574 (1988-08-01), Whitmore, Jr. et al.
patent: 4802146 (1989-01-01), Moeckel
patent: 4802147 (1989-01-01), Moeckel
patent: 4813027 (1989-03-01), Tieman
patent: 4964103 (1990-10-01), Johnson

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