Elastic reverse-time migration

Zaiming Jiang and John C. Bancroft and Laurence R. Lines

ABSTRACT

Two aspects of elastic reverse-time migration are addressed. First, a new method of imaging conditions is proposed and compared to two popular methods. The comparison is done using a point reflector subsurface model, and the proposed method is used in migration of a shrunk Marmousi2 model. Second, a prestack reverse-time migration workflow is proposed and tested with a shrunk Marmousi2 model. The processing workflow is very different from the traditional seismic data processing workflow. For example, it is not necessary to remove ground roll from surface records.

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