Wellbore instrument module having magnetic clamp for use in cased wellbores
US7721809B2 · kind B2 · utility
5Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2008 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/52
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetically clamped wellbore instrument module includes a substantially non-magnetic housing configured to traverse an interior of the wellbore. At least one electromagnet is disposed at a longitudinally spaced apart position along the housing. The at least one electromagnet has a plurality of circumferentially spaced apart contact points that define a diameter greater than a diameter of the housing. The contact points have circumferential spaces therebetween defining a diameter smaller than the diameter defined by the contact points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.