Method of and apparatus for carrying out acoustic well logging
US11353615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2018 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | May 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/582
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In acoustic well logging, for each inversion depths of a well at which logging of data occurs, acoustic log signals representative of waveforms received at acoustic receivers are processed in a frequency domain to derive field dispersion curve(s). A neural net is operated to generate formation shear slowness value(s) from the curve(s), and resulting signal(s) indicative of shear slowness values are saved, transmitted, plotted, printed or processed. An apparatus for carrying out the method includes a logging tool having at least one activatable acoustic wave source; spaced and acoustically isolated therefrom in the logging tool an array of acoustic detectors that on the detection of acoustic wave energy generate electrical or electronic log signal(s) characteristic of acoustic energy waves detected by the acoustic detector(s); and at least one processing device associated with or forming part of the logging tool for processing the log signal(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.