Electromagnetic casing inspection tool with azimuthal sensitivity
US10087738B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2016 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Jan 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Various downhole logging tools and methods of using and making the same are disclosed. In one aspect, a downhole logging tool for inspecting a well casing is provided that includes a housing adapted to be supported in the well casing by a support cable. A transmitter is positioned in the housing and operable to generate a magnetic field. Plural receivers are positioned in the housing in circumferentially-spaced apart relation and are operable to sense the magnetic field with azimuthal sensitivity. Electronic circuitry is operatively coupled to the receivers to determine a parameter of the sensed magnetic field and determine a characteristic of the well casing based on the parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.