When exploring new areas, it is desirable to have a robust inversion methodology that can obtain reliable results in a reasonable time. In addition, it is also desirable that such inversion be run with or without any a priori well information. This is particularly important in deep water where well information is sparse and seismic data is the only information on which the initial exploration strategy can be based.

This paper describes a combination of prestack and poststack inversion that allows efficient inversion of large data volumes in the absence of well information. This hybrid methodology first runs prestack genetic...

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