Elastic full wavefield inversion with refined anisotropy and VP/VS models
US11815642B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2019 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Apr 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods for inversion of seismic data to infer subsurface physical property parameters, comprising constructing an inhomogeneous anisotropy model and/or inhomogeneous VS/VP or VP/VS model; and inverting the seismic data in a sequential or simultaneous approach to obtain at least one subsurface physical property parameter using an elastic inversion algorithm and the inhomogeneous anisotropy model and/or inhomogeneous VS/VP or VP/VS model. Constructing an inhomogeneous anisotropy model may comprise deriving geobodies from at least one of seismic facies analysis, regional geologic information, or seismically derived earth models; and adjusting at least one of ε, δ, γ, or parameters of the elastic stiffness tensor matrix in a homogeneous anisotropy model in areas corresponding to the geobodies. Constructing an inhomogeneous VS/VP or VP/VS model may comprise deriving geobodies and adjusting values in a homogeneous VS/VP or VP/VS model in areas corresponding to the geobodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.