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US 9,851,463 B2Granted
Interference attenuation of a residual portion of seismic data
AssigneePGS Geophysical AS
InventorsRolf H. Baardman, Roald G van Borselen, Steven Fishburn, Alan Ryder
Life of this patent
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Abstract
The present disclosure is related to methods, systems, and machine-readable media for interference attenuation of a residual portion of seismic data, such as may be recorded in a marine seismic survey. Recorded seismic data can be separated into a portion attributed to a source and a residual portion. Seismic interference attenuation can be performed on the residual portion.
Claims22
A method, comprising:
- separating, by a machine, recorded seismic data indicative of a subterranean formation into a residual portion and a quantity of portions that are coherent in a data domain, each portion attributed to a respective one of a quantity of sources actuated as part of a marine survey designed to generate the seismic data,
- wherein the quantity of portions is equal in number to the quantity of sources;
- performing, by the machine, seismic interference attenuation on the residual portion to remove seismic interference from the residual portion;
- and
- subtracting the seismic interference from the recorded seismic data to yield seismic interference attenuated recorded seismic data better indicative of the subterranean formation.
2 more elements
A system, comprising:
- a source separation engine configured to separate recorded seismic data indicative of a subterranean formation into a first respective portion for each of a plurality of sources actuated as part of a marine survey designed to generate the seismic data and a residual portion;
- and
- an interference attenuation engine configured to remove seismic interference from the residual portion to yield a seismic interference attenuated residual portion;
- wherein the source separation engine is configured to:
- separate the seismic interference attenuated residual portion into a second respective portion for each of the plurality of sources and an updated seismic interference attenuated residual portion;
- and
- add the first respective portion for each of the plurality of sources and the second respective portion for each of the plurality of sources to yield a total separated portion for each of the plurality of sources;
- and
- wherein the interference attenuation engine is further configured to subtract the seismic interference from the recorded seismic data to yield seismic interference attenuated recorded seismic data better indicative of the subterranean formation.
6 more elements
A non-transitory machine-readable medium storing instructions executable by a processing resource to cause a computing system to:
- separate recorded seismic data indicative of a subterranean formation into a portion attributed to a source actuated as part of a marine survey designed to generate the seismic data and a residual portion not attributed to a source actuated as part of the marine survey,
- wherein the portion attributed to the source corresponds to one source element or one source unit;
- and
- wherein the residual portion is determined based on the recorded seismic data, a blending operator, and separated data for individual actuations of the one source element or the one source unit;
- perform a seismic interference attenuation on the residual portion to identify seismic interference in the residual portion;
- and
- subtract the seismic interference from the recorded seismic data to yield seismic interference attenuated recorded seismic data better indicative of the subterranean formation.
4 more elements
A method of generating a geophysical data product, the method comprising:
- obtaining geophysical data;
- processing the geophysical data to generate the geophysical data product, wherein processing the geophysical data comprises:
- separating, by a machine, recorded seismic data indicative of a subterranean formation into a residual portion and quantity of portions that are coherent in a data domain, each portion attributed to a respective one of a quantity of sources actuated as part of a marine survey designed to generate the seismic data,
- wherein the quantity of portions is equal in number to the quantity of sources;
- performing, by the machine, seismic interference attenuation on the residual portion to remove seismic interference from the residual portion;
- and
- subtracting the seismic interference from the recorded seismic data to yield seismic interference attenuated recorded seismic data better indicative of the subterranean formation.
4 more elements
Dependencies are inferred from the claim text.