Industry Article: Minimizing time-lapse noise with Wave-Height-Corrected Seismic

Rough seas introduce unwanted noise in 4-D surveys. New techniques - such as wave-height correction - help keep things quiet. In an ideal world towed marine seismic data would always be acquired in flat-calm seas. Unfortunately, this is not often the case, and the rough sea surface introduces perturbations in the recorded seismic data from both the source and the receiver side. Correction for these distortions effectively flattens the sea surface, resulting in data equivalent to that acquired in a calm sea. Source elevations are corrected, and the time-variant receiver ghost is corrected through novel sub-Hz data recordings that image the instantaneous sea surface profile. For the best results, wave height corrections should be applied to all vintages of the 4-D seismic records utilizing the latest seismic acquisition equipment, highly accurate GPS results, and advanced processing techniques.

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	Wave-Height Corrected Seismic

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