Generating common image gather using wave-field separation
US10295685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2017 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jul 15, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for generating Angle Domain Common Image Gathers (ADCIGs). One computer-implemented method includes receiving, at a data processing apparatus, a set of seismic data associated with a subsurface region wherein the set of seismic data includes receiver signal data at a plurality of time steps; for each time step in the plurality of time steps: calculating a receiver wavefield based on the receiver signal data at the respective time step; separating a first direction receiver wavefield and a second direction receiver wavefield of the receiver wavefield using Hilbert transformation of the receiver signal data at the respective time step; and applying an optical flow process on the first direction receiver wavefield to calculate wavefield directions; and generating an Angle Domain Common Image Gather (ADCIG) based on the wavefield directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.