Method of wavefield extrapolation for single-station, dual-sensor towed streamer signals
First Claim
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1. A method for wavefield extrapolation in a dual-sensor towed streamer, comprising:
- determining a time-dependent arrival angle at a single receiver station in the towed streamer;
calculating up-going and down-going pressure wavefields from pressure and vertical particle velocity wavefields measured at the receiver station; and
generating extrapolated up-going and down-going pressure wavefields from the up-going and down-going pressure wavefields displaced by a time delay based upon the time-dependent arrival angle.
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Abstract
A time-dependent arrival angle is determined at a single receiver station in a towed streamer. Up-going and down-going pressure wavefields are calculated from pressure and vertical particle velocity wavefields measured at the receiver station. Extrapolated up-going and down-going pressure wavefields are generated from the up-going and down-going pressure wavefields displaced by a time delay based upon the time-dependent arrival angle.
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10 Claims
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1. A method for wavefield extrapolation in a dual-sensor towed streamer, comprising:
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determining a time-dependent arrival angle at a single receiver station in the towed streamer; calculating up-going and down-going pressure wavefields from pressure and vertical particle velocity wavefields measured at the receiver station; and generating extrapolated up-going and down-going pressure wavefields from the up-going and down-going pressure wavefields displaced by a time delay based upon the time-dependent arrival angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification