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US 7,599,798 B2Granted
Migrating composite seismic response data to produce a representation of a seismic volume
AssigneeWesternGeco L.L.C.
InventorsCraig J. Beasley, Phil Kitchenside, Nicolae Moldoveanu
Life of this patent
Estimating the term…
Abstract
A subterranean structure is characterized using composite seismic response data received from a plurality of sources. Phase encoding is applied to the data in which phase shifts are selected based on frequency variation of noise terms. The phase-encoded data is then migrated and a representation of the subterranean structure is produced according to the migrating.
Claims21
A method of characterizing a subterranean structure comprising:
- receiving, by a computer, composite seismic response data resulting from a plurality of seismic sources;
- applying, by the computer, phase encoding to the composite seismic response data in which phase shifts are selected based on considering frequency variation of noise terms in the composite seismic response data;
- migrating, by the computer, the phase-encoded composite seismic response data;
- and
- producing, by the computer, a representation of the subterranean structure according to the migrating.
2 more elements
An article comprising at least one computer-readable storage medium containing instructions that when executed cause a computer to:
- receive composite seismic response data resulting from activations of a plurality of seismic sources;
- determine phase factors to combine with the composite seismic response data, wherein the phase factors are determined based on computing phase shifts that vary with frequency;
- apply phase encoding to the composite seismic response according to the determined phase factors;
- migrate the phase-encoded composite seismic response data;
- and
- produce a representation of the subterranean structure according to the migrating.
3 more elements
A computer comprising:
- a processor;
- and
- software executable on the processor to:
- receive composite seismic response data resulting from a plurality of seismic sources;
- apply phase encoding to the composite seismic response data in which phase shifts are selected based on considering frequency variation of noise terms in the composite seismic response data;
- migrate the phase-encoded composite seismic response data;
- and
- produce a representation of the subterranean structure according to the migrating.
5 more elements
Dependencies are inferred from the claim text.