Attenuation of interface waves using single component seismic data
US12000972B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2021 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Aug 6, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for filtering interface waves from single component seismic data are disclosed. In one embodiment, a method of filtering seismic data includes comparing amplitude coefficients of a matrix storing the seismic data in a time-frequency domain against an amplitude threshold, and comparing frequencies of the matrix against a maximum expected frequency of noise. The method further includes, for each amplitude coefficient having less than the amplitude threshold and an associated frequency less than the maximum expected frequency of noise, scaling the amplitude coefficient to reduce its value. The method also includes performing an inverse time-frequency transformation on the matrix to generate a noise model in a time domain, and subtracting the noise model from the seismic data in the time domain to generate filtered seismic data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.