Method for restoring and extrapolating seismic traces
US4953139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1990 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Feb 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/362
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A seismic record is enhanced through trace restoration and extrapolation. A set of traces surrounding a missing trace or adjacent an edge of the seismic record are transformed into the frequency domain using a fast Fourier transform. Each frequency of the resultant x-f representation a series of complex numbers, one corresponding to each trace, is selected. Autoregressive model coefficients are estimated for this complex series using a recursive least squares method. A complex number is estimated for trace restoration and extrapolation from the series of complex numbers and autoregressive coefficients. After all frequency components are thus processed restored or extrapolated traces are obtained by an inverse Fourier transform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.