Systems and methods for downhole cement evaluation
US9822627B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/1299
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods for cement evaluation by determining a shear velocity of a shear wave (26) propagating within a medium (20) located between a formation (12) and a casing (13) in a borehole (11) are presented. The method can include positioning an ultrasonic transducer array (21) in the borehole inside the casing. The method can also include in a pushing mode, generating a shear wave in the medium with the ultrasonic transducer array inside the casing. The method can also include in an interrogation mode, measuring a shear velocity of the shear wave in the medium with the ultrasonic transducer array. The shear velocity may be used to determine whether the medium is solid or liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.