Multi-scale unsupervised seismic velocity inversion method based on autoencoder for observation data
US11828894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2021 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Dec 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-scale unsupervised seismic velocity inversion method based on an autoencoder for observation data. Large-scale information is extracted by the autoencoder, which is used for guiding an inversion network to complete the recovery of different-scale features in a velocity model, thereby reducing the non-linearity degree of inversion. A trained encoder part is embedded into the network to complete the extraction of seismic observation data information at the front end, so it can better analyze the information contained in seismic data, the mapping relationship between the data and velocity model is established better, then the inversion method is unsupervised, and location codes are added to the observation data to assist the network in perceiving the layout form of an observation system, which facilitates practical engineering application. Thus a relatively accurate inversion result of the seismic velocity model when no real geological model serves as a network training label can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.