Multi-scale photoacoustic detection method of geological structure around borehole and related devices
US11892577B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 2, 2021 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Oct 20, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/6222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are a multi-scale photoacoustic detection method of geological structure around a borehole and related devices. The method includes: obtaining depth information and direction information of the borehole; generating trajectory data of the borehole according to the depth information and direction information; obtaining an optical image of the geological structure around the borehole; generating a first velocity model according to the optical image and the trajectory data; obtaining low-frequency acoustic wave data and high-frequency acoustic wave data of the geological structure around the borehole; performing a full waveform inversion on the first velocity model according to the low-frequency acoustic wave data and the high-frequency acoustic wave data to obtain a second velocity model; and determining the geological structure around the borehole according to the second velocity model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.