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US 10,509,139 B2Granted
Removing noise from a seismic measurement
AssigneeWesternGeco L.L.C.
InventorsAhmet Kemal Ozdemir, Bent Andreas Kjellesvig
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Abstract
A technique includes using a filter having filtering parameters based at least in part on a dispersion curve of at least one vibration mode of a streamer to filter a measurement acquired by at least one sensor of the streamer and using results of the filtering to suppress vibration noise present in the measurement.
Claims15
A method comprising:
- performing a seismic survey using a towed streamer having at least one sensor;
- acquiring a measurement using the at least one sensor during the seismic survey;
- using a filter having filtering parameters based at least in part on a dispersion curve of at least one vibration mode of the towed streamer to filter the measurement acquired by the at least one sensor of the streamer;
- and
- using results of the filtering to suppress vibration noise present in the measurement, wherein using the filter and using results of the filtering includes convolving the measurement in a time-spatial domain to suppress the vibration noise, wherein using the results of the filtering further includes generating a vibration noise suppressed signal and applying frequency subband-based decomposition and reconstruction filtering to the vibration noise-suppressed signal.
2 more elements
An apparatus comprising:
- an interface to receive data representing a measurement acquired by at least one sensor of a streamer while in tow;
- and
- a processor to process the data to:
- filter the data based at least in part on a dispersion curve for the streamer;
- use results of the filtering to suppress the vibration noise present in the measurement;
- convolve the measurement in a time-spatial domain to suppress the vibration noise;
- and
- apply frequency subband-based decomposition and reconstruction filtering to the results of the filtering based on the dispersion curve.
5 more elements
An article comprising a non-transitory computer readable storage medium to store instructions that when executed by a computer, cause the computer to:
- use a filter having filtering parameters based at least in part on a dispersion curve of at least one vibration mode of a towed streamer to filter a measurement acquired by at least one sensor of the streamer;
- use results of the filtering to suppress vibration noise present in the measurement;
- convolve the measurement in a time-spatial domain to suppress the vibration noise;
- and
- apply frequency subband-based decomposition and reconstruction filtering to the vibration noise suppressed signal.
2 more elements
Dependencies are inferred from the claim text.