Schlumberger

Receiver Motion Compensation (RMC)

Overview Library

Remove errors due to continuous receiver movement during marine towed-streamer seismic acquisition

With marine towed-streamer acquisition, the receivers continue to move through the water after the source is fired. This movement introduces time-variant positioning errors in the recorded data, effectively smearing data horizontally. Receiver motion compensation (RMC) removes these errors, placing data in the position they would have been recorded had the receivers remained stationary for the duration of the recording.

The 2D process applies a spatial correction to data based on the sample Interval, receiver spacing, and sample rate, shifting data toward the front of the cable. The amount of correction increases with recording time and the speed at which the cable is towed.

Benefit from a wide range of applications

RMC is applied early in the processing sequence, directly after the navigation information is merged with the seismic data, so that all subsequent processing steps can take advantage of the correction.

The technique is applicable to

  • any marine towed-streamer seismic data where the vessel speed is known with reasonable accuracy
  • marine seismic data with any source-receiver configuration.

Suitable for the dense inline single-sensor sampling used by WesternGeco single-sensor acquisition techniques and IsoMetrix marine isometric seismic technology, RMC is also applicable to data recorded by other acquisition technologies and to legacy data if the data are interpolated to the optimal receiver spacing.

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WesternGeco

Ensure Accuracy of Streamer Seismic Data

Time-variant receiver motion correction filter applied to seismic data to compensate for forward motion of the vessel.
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