Mitigation of noise in marine multicomponent seismic data through the relationship between wavefield components at the free surface
First Claim
1. A computer-implemented method for mitigating noise in multicomponent, marine seismic data, comprising:
- on a computer,determining a noise component in a set of multicomponent seismic data representing a recorded wavefield from the relationship at the free surface of an upgoing component and a downgoing component decomposed from the recorded wavefield, wherein the noise is any information that does not obey the acoustic equation of motion; and
removing the determined noise component from the seismic data.
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Abstract
A method and apparatus implementing a technique for mitigating noise in seismic data are presented. The technique includes estimating a noise component in a set of multicomponent seismic data representing a recorded wavefield from the relationship at the free surface of an upgoing component and a downgoing component decomposed from the recorded wavefield; and removing the estimated noise component from the seismic data. The noise component can be estimated by decomposing a recorded wavefield into an upgoing component and a downgoing component and isolating a noise component in the recorded wavefield from the relationship of the decomposed upgoing and downgoing components at the free surface.
23 Citations
32 Claims
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1. A computer-implemented method for mitigating noise in multicomponent, marine seismic data, comprising:
on a computer, determining a noise component in a set of multicomponent seismic data representing a recorded wavefield from the relationship at the free surface of an upgoing component and a downgoing component decomposed from the recorded wavefield, wherein the noise is any information that does not obey the acoustic equation of motion; and removing the determined noise component from the seismic data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for mitigating noise in seismic data comprising:
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acquiring a set of multicomponent seismic data in a marine survey; and on a computer, removing a noise component in the seismic data determined from the relationship of the decomposed upgoing and downgoing components at the free surface, wherein the noise is any information that does not obey the acoustic equation of motion. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A apparatus, comprising:
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a marine survey system capable of acquiring multicomponent seismic data; and a computing apparatus programmed to remove noise component in the seismic data determined from the relationship at the free surface of an upgoing component and a downgoing component decomposed from the recorded wavefield, wherein the noise is any information that does not obey the acoustic equation of motion. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification