Method of seismic migration using a massively parallel computer
CA 2126325 C · Owner: Pieprzak, Andrew · Inventors: Highnam, Peter T.; Pieprzak, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for 3 dimensional, one pass migration of post stack seismic data is implemented on a massively parallel computer. The quality of the migration and speed of execution makes possible iterative 3D post stack depth migrations. The depth migration method computes in the frequency domain and downward continues one or more frequency planes through all depth levels of interest. For a single frequency, at mach depth level, the method extrapolates a shifted position for each x, y position by applying a filter for 2D convolution. A processing component is assigned to each subgrid of x, y spatial positions and the processing components operate concurrently in parallel to determine filter …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 18, 1992 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.