Ultrasonic logging methods and apparatus for measuring cement and casing properties using acoustic echoes
US10358905B2 · kind B2 · utility
1Cited by
19References
23Claims
0Family size
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Key dates
| Filing date | Jan 13, 2014 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Mar 5, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for measuring parameters of a borehole using an acoustic logging system. By transmitting a high frequency acoustic signal essentially perpendicular to the major axis of a borehole casing using a transducer, the high frequency acoustic signal may produce one or more acoustic echoes. By receiving and analyzing a first acoustic echo from an inner wall of the borehole casing and at least one second acoustic echo from a back wall of the borehole casing, borehole parameters such as the impedance of the casing cement and the thickness of thicker borehole casings, up to and greater than 1 inch, may be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.