Processing seismic data by nonlinear stacking
US10641916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2013 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Oct 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Seismic data processing using one or more non-linear stacking enabling detection of weak signals relative to noise levels. The non-linear stacking includes a double phase, a double phase-weighted, a real phasor, a squared real phasor, a phase and an N-th root stack. Microseismic signals as recorded by one or more seismic detectors and transformed by transforming the signal to enhance detection of arrivals. The transforms enable the generation of an image, or map, representative of the likelihood that there was a source of seismic energy occurring at a given point in time at a particular point in space, which may be used, for example, in monitoring operations such as hydraulic fracturing, fluid production, water flooding, steam flooding, gas flooding, and formation compaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.