Adaptive control of marine seismic streamers
First Claim
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1. A system for controlling the position and shape of marine seismic streamer cables, comprising the steps of:
- receiving a plurality of real time signals, including hydrophone noise, from a marine seismic data acquisition system and a plurality of threshold parameters, including maximum allowable hydrophone noise, from an input device;
comparing the real time signals to the threshold parameters to determine if the streamer cables should be repositioned; and
repositioning the streamer cables when the real time hydrophone noise signal is within the maximum allowable hydrophone noise threshold and when the remaining real time signals exceed the threshold parameters.
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Abstract
A method for controlling the position and shape of marine seismic streamer cables, whereby a plurality of real time signals from a marine seismic data acquisition system and a plurality of threshold parameters from an input device are received. The real time signals are compared to the threshold parameters to determine if the streamer cables should be repositioned. The streamer cables are repositioned when the real time signals exceed the threshold parameters.
92 Citations
10 Claims
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1. A system for controlling the position and shape of marine seismic streamer cables, comprising the steps of:
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receiving a plurality of real time signals, including hydrophone noise, from a marine seismic data acquisition system and a plurality of threshold parameters, including maximum allowable hydrophone noise, from an input device; comparing the real time signals to the threshold parameters to determine if the streamer cables should be repositioned; and repositioning the streamer cables when the real time hydrophone noise signal is within the maximum allowable hydrophone noise threshold and when the remaining real time signals exceed the threshold parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for controlling the position and shape of marine seismic streamer cables, comprising the steps of:
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receiving a plurality of real time signals, including streamer cable positions, streamer cable shapes, streamer cable separations, obstructive hazard positions, subsurface seismic coverage, recorded seismic data and hydrophone noise, from a marine seismic data acquisition system; receiving a plurality of threshold parameters, including minimum allowable separations between streamer cables, minimum allowable separations between any streamer cable and an obstructive hazard, minimum allowable subsurface seismic coverage and maximum allowable hydrophone noise, from an input device; calculating a position correction that will keep the streamer cables within the threshold parameters; determining if the streamer cables are in an at risk situation; sending the position correction to a streamer device controller for adjusting a plurality of streamer positioning devices when the streamer cables are in an at risk situation; determining if the streamer cables are in use for recording seismic data; sending the position correction to the streamer device controller when the streamer cables are not in use for recording seismic data; determining if the real time signals of hydrophone noise are within the threshold parameters of maximum allowable hydrophone noise; and sending the position correction to the streamer device controller when the real time hydrophone noise is within the maximum allowable hydrophone noise threshold.
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Specification