Collocated multitone acoustic beam and electromagnetic flux leakage evaluation downhole
US10465509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2016 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Oct 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Methods, systems, devices, and products for well logging using a logging tool in a borehole in an earth formation. Methods include conveying the logging tool in the borehole on a carrier; taking acoustic well logging measurements with the logging tool including generating a multitone acoustic beam from at least one transmitter on the tool, the beam comprising a high frequency signal modulated by a low frequency envelope, the high frequency signal including a first subsignal at a first frequency and a second subsignal at a second frequency, and generating measurement information at at least one acoustic receiver on the logging tool in response to a plurality of acoustic reflections of the acoustic beam from at least one volume of interest in the formation; and estimating a property of the volume of interest using the measurement information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.