Guided wave attenuation well logging excitation optimizer based on waveform modeling
US11066920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2017 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Apr 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/954
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for inspecting oilfield infrastructure components. Methods include estimating an optimal value for at least one excitation parameter for an acoustic excitation source to produce a guided wave of mixed multiple modes in the component; selecting at least one excitation parameter corresponding to an optimal simulated guided wave determined in dependence upon the application of waveform criteria to the time domain waveforms; and generating a guided wave in the tubular using the at least one optimal excitation parameter. Methods may include calculating a guided wave dispersion relation; modeling each of the plurality of simulated guided waves, wherein the modeling comprises generating a time domain waveform for each of a plurality of wave modes in dependence upon the acoustic excitation source; selecting the at least one excitation parameter corresponding to an optimal simulated guided wave determined in dependence upon the application of waveform criteria to the time domain waveforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.