Method for measuring remote field eddy current thickness in multiple tubular configuration
US9310338B2 · kind B2 · utility
5Cited by
99References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2011 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | May 23, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In accordance with aspects of the present invention, a method of inspecting a well tubular is disclosed. The method utilizes a probe with a transmitter and detectors spaced from the transmitter by at least twice the diameter of the pipe to be tested. In some cases where multi-tubular structures are tested, the probe can include further detectors spaced from the transmitter by at least twice the diameter of the outer pipes as well. The phase of signals detected by the detectors relative to the transmitter are utilized to detect faults in the pipes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.