Sensor grouping for dual sensor marine seismic streamer and method for seismic surveying
AssigneePGS Geophysical AS
InventorStig Rune Lennart Tenghamn
Life of this patent
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Abstract
A method for marine seismic surveying includes towing a streamer in a body of water. The streamer includes a plurality of spaced apart sensor groups, each including a plurality of longitudinally spaced apart pressure sensors and particle motion responsive sensors. Signals are detected at each of the sensors in response to actuation of a seismic energy source. Components of the sampled motion signals in each group above a selected frequency are combined to generate respective group motion signals. Components of the motion responsive signals below the selected frequency are velocity filtered. The velocity filtered signals are combined with the group motion signals to generate full bandwidth motion responsive signals corresponding to each sensor group.
Claims10
A method for marine seismic surveying, comprising:
- towing at least one seismic streamer in a body of water, the streamer including a plurality of spaced apart sensor groups, each sensor group including a plurality of longitudinally spaced apart particle motion responsive sensors;
- detecting signals at each of the particle motion responsive sensors in response to actuation of a seismic energy source;
- summing components of the signals from each group above a selected frequency to generate respective group motion signals;
- velocity filtering components of the signals from each group below the selected frequency to generate respective group velocity filtered signals;
- and
- combining the group velocity filtered signals with the group motion signals to generate full bandwidth motion responsive signals corresponding to each sensor group.
Dependencies are inferred from the claim text.