Schlumberger

Wave-Height Corrected Seismic

Improved repeatability in time-lapse (4D) surveys

Ideally, towed marine seismic data would always be acquired in flat-calm seas. Usually, however, this is not the case, and the rough sea surface introduces perturbations in the recorded seismic data from both the source and receiver side.

We can now correct for these perturbations using a combination of newly developed data processing technology and unique Q-Marine measurements.

In the field, finely sampled single-sensor streamers allow for accurate pressure gradient measurements from ultra-low frequency (<0.5Hz) recorded data, whilst two antennas on each gun float provide high accuracy RTK-GPS x, y and z measurements for positioning and elevation.

New data processing technology allows us to invert the pressure measurements and apply wave-height corrections, resulting in improved reflector continuity, improved wavelet stability and, most significantly, improved repeatability between time lapse (4D) surveys.

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Industry Article

Minimizing Time-lapse Noise with Wave-Height-Corrected Seismic  

Technical Paper

Source and Receiver Measurements and Corrections for the Effects of Sea Surface Wave Heights

Corrected Datasets Show Improved Repeatability

The application of wave height corrections improves the repeatability of two seismic datasets
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