Abstract
Summary In a dual-sensor Ocean Bottom Cable (OBC) survey, both hydrophones and geophones are used to record the seismic signal. Primary reflection and water-column reverberations exhibit different behavior on hydrophone and geophone data. Rather than focusing on eliminating the reverberation by careful calibration of the hydrophone and geophone data, we present here a method of using pre-stack depth migration to use the reverberations as well as the primary reflection as part of the imaging. Combining the subsurface image from both not only significantly reduced the multiple effect as noise but also has extended the coverage. We demonstrate by applying the method to the Teal South 4D_4C survey.
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