System and method for generating modeled data based on wavefield propagation with time-variant subsurface property
Patent Information
- Authority / Receiving Office
- GB · GB
- Patent Type
- Patents
- Current Assignee / Owner
- CGG SERVICES SAS
- Filing Date
- 2025-01-31
- Publication Date
- 2026-07-16
AI Technical Summary
Existing seismic data processing methods, such as Full Waveform Inversion (FWI), struggle to accurately calculate modeled data, leading to inaccurate images of subsurface formations, particularly in complex 3D models, and fail to accurately represent amplitude variations with reflection angles.
The method involves propagating wavefields through parameter volumes that vary as a function of travel-time, allowing for more accurate modeling by iteratively updating the earth model to minimize the misfit between recorded and modeled data, using elastic or visco-elastic wave equations to account for varying subsurface properties.
This approach generates more accurate images of subsurface formations by improving the representation of amplitude variations with reflection angles, enhancing the precision of hydrocarbon detection and reservoir characterization.
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