Seismogram correction for absorption effects
US7574303B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Correcting seismograms to compensate for absorption or dissipative effects that occur in the earth. In one implementation, a ratio of traveltime (t) to absorption parameter (Q) may be computed for each seismogram. The ratio may be referred to as R. Further, the ratio may be computed for a predetermined set of traveltimes. As a result, a system of linear equations may be generated, where each ratio is represented by a linear equation having a number of unknown components. The system of linear equations may then be solved for the unknown components. The solved components may then be recombined or added to generate an estimate of R. In one implementation, only a portion of the solved components may be added. The seismograms may then be corrected using the estimate of R. As such, the seismograms may be corrected for absorption effects in a surface consistent manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.