Method for compensating marine geophysical sensor measurements for effects of streamer elongation
AssigneePGS Geophysical AS
InventorsGustav Göran Mattias Südow, Andras Robert Juhasz
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Abstract
A method for determining a longitudinal position of at least one geophysical sensor on a towed marine streamer includes measuring a parameter related to tension at least one position along the streamer. A change in length of the streamer is determined using the measured parameter. The longitudinal position of the at least one sensor is determined. A marine streamer includes at least one geophysical sensor and at least one tension sensor capable of measuring a parameter related to axial tension.
Claims20
A method for determining a longitudinal position of at least one geophysical sensor on a towed marine streamer, comprising:
- measuring a parameter related to axial tension at at least one position along the streamer;
- determining a change in length of the streamer using the measured parameter;
- and
- determining the longitudinal position of the at least one sensor.
A method for marine geophysical surveying, comprising:
- towing at least one marine streamer in a body of water, wherein the streamer comprises at least one geophysical sensor;
- measuring a parameter related to axial tension at at least one position along the streamer;
- determining a change in length of the streamer using the measured parameter;
- at selected times actuating an energy source in the body of water;
- recording signals detected by the at least one geophysical sensor;
- and
- compensating the recorded signals for the determined change in length of the streamer.
A marine streamer, comprising:
- at least one geophysical sensor;
- and
- at least one tension sensor capable of measuring a parameter related to axial tension,
- wherein the at least one tension sensor is disposed in a streamer-integrated pressure vessel, is disposed in a module capable of connecting axial ends of streamer segments, the marine streamer comprising a plurality of streamer segments, or is integrated into a streamer strain member.
Dependencies are inferred from the claim text.