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US 2006/0217890 A1Published application
Processing seismic data
AssigneeWesternGeco L.L.C.
InventorsKambiz Iranpour, James Martin, Julian Kragh, Ali Ozbek
Life of this patent
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AssigneeWesternGeco L.L.C.
InventorsKambiz Iranpour, James Martin, Julian Kragh, Ali Ozbek
Estimating the term…
A method of processing seismic data comprises transforming seismic data which contain coherent noise to a domain in which at least some of the coherent noise is transformed to incoherent noise. The seismic data are then filtered in the new domain, to remove or attenuate the incoherent noise. If desired, the filtered data may subsequently be transformed back to the domain in which the data were acquired. The filtering process may be carried out using a multichannel interference canceller. A seismic data trace to be filtered is input to the principal channel of the interference canceller, and one or more other seismic data traces are input to the interference canceller as reference traces. Use of seismic data traces as the reference trace(s) avoids the need to determine a noise reference trace.
A method of processing seismic data comprising the steps of:
A method as claimed in claim Z wherein the first portion of the seismic data is input to the principal channel of the multichannel interference canceller;
An apparatus for processing seismic data, and comprising:
An apparatus for processing seismic data containing a signal of interest and incoherent noise, the apparatus comprising a multi-channel interference canceller having a principal channel for receiving a first portion of the seismic data and a reference channel for receiving a signal reference signal.
Dependencies are inferred from the claim text.