Wave-equation based processing and analysis of imaged seismic data
US-2015276956-A1 · Oct 1, 2015 · US
Wave-equation migration velocity analysis using image warping
US9702997B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9702997-B2 |
| Application number | US-201214131962-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 12, 2012 |
| Priority date | Jul 12, 2011 |
| Publication date | Jul 11, 2017 |
| Grant date | Jul 11, 2017 |
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Abstract
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An objective function is disclosed that extracts the velocity error information directly in the image domain without computing common-image gathers. Because of the dimensionality of the problem, gradient-based methods (such as the conjugate-gradient algorithm) are used in the optimization procedure. In order to include the full complexity of the wavefield in the velocity estimation algorithm, a two-way (as opposed to one-way) wave operator is considered, where the imaging operator is not linearized with respect to the model parameters (as in linearized wave-equation migration velocity analysis), and the gradient of the objective function is determined using the adjoint-state method. The velocity estimation methodology is illustrated with a few synthetic examples.
First claim
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The invention claimed is: 1. A method of analyzing seismic image data, comprising: receiving a first image, the first image representing image data of a geological structure obtained from seismic receivers in a first position relative to the geological structure; receiving a second image, the second image representing image data of the geological structure obtained from seismic receivers in a second position relative to the geological structure, wherein the first position and th…
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Physics · mapped topic
Physics · mapped topic
- G01V1/303Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US9702997B2 cover?
- An objective function is disclosed that extracts the velocity error information directly in the image domain without computing common-image gathers. Because of the dimensionality of the problem, gradient-based methods (such as the conjugate-gradient algorithm) are used in the optimization procedure. In order to include the full complexity of the wavefield in the velocity estimation algorithm, a…
- Who is the assignee on this patent?
- Sava Paul, Perrone Francesco, Andreoletti Clara, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G01V1/303. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jul 11 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).