Method for seismic data processing using depth slice decomposition
US5657223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Aug 12, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/57
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of processing geophysical data on a parallel processor. The method involves decomposition of an analysis cube into depth slices, a second decomposition of a data acquisition cube into traveltime slices, and determination of a variably dimensioned analysis aperture. Precomputed traveltimes are stored in packed format to minimize storage volume and data bandwidths. The method relies on staged access of traveltime fields from high speed mass storage to disk storage and via input/output processors to analysis processor memory. The input/output processors monitor analysis processor memory to optimize the direct scatter download of traveltime fields to the analysis processors. The seismic trace data download is also staged, preferably from tape storage to disk storage to processor memory. A control processor preprocesses the trace data while downloading the trace data from disk storage to processor memory. The control processor monitors analysis processor memory to optimize the trace data download, which involves a logarithmic tree broadcast technique. The method allows multiple common offsets to be simultaneously processed, and can be carried out on any type of parallel process…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.