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US 2013/0294196 A1Published application
Inversion using a filtering operator
AssigneeWesternGeco L.L.C.
InventorsPAUL N. CHILDS, ROBIN FLETCHER, XIANG DU, EUGENE WILLIAM STARR
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Abstract
To perform inversion to produce a model of a structure, a filtering operator based at least on an angle between a propagating direction of a source wavefield and a propagating direction of a back-propagated receiver wavefield is computed. The filtering operator is used in performing the inversion to produce the model of the structure.
Claims20
A method comprising:
- receiving a representation of a source wavefield and a representation of a back-propagated receiver wavefield in a structure;
- computing a filtering operator based at least on an angle between a propagating direction of the source wavefield and a propagating direction of the back-propagated receiver wavefield;
- and
- using the filtering operator in performing the inversion to produce a model of the structure.
1 more element
An article comprising at least one machine-readable storage medium that stores instructions that upon execution cause a system to:
- compute a filtering operator based at least on an angle between a propagating direction of a source wavefield and a propagating direction of a back-propagated receiver wavefield in a structure;
- and
- iteratively apply the filtering operator in a plurality of iterations of an inversion process for producing a model of the structure, wherein applying the filtering operator causes reduction of a backscattering artifact in the model.
A computing system comprising:
- at least one processor to:
- receive a representation of a source wavefield and a representation of a back-propagated receiver wavefield in a structure;
- compute a filtering operator based at least on an angle between a propagating direction of the source wavefield and a propagating direction of the back-propagated receiver wavefield;
- and
- use the filtering operator in performing the inversion to produce a model of the structure.
2 more elements
Dependencies are inferred from the claim text.