Centralizer including measurement means
US7071697B2 · kind B2 · utility
12Cited by
18References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2001 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Aug 8, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/113
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A centralizer (1) for position a casing (3) in a conduit (4) passing through underground formations includes measurement means (7) such as an electrode for deriving at least one representative parameter of the formations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.