Instrument centralizer configurable for use with cement evaluation well logging instruments
US8235109B2 · kind B2 · utility
2Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Mar 5, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A centralizer for a well logging instrument includes a mandrel, a plurality of bow springs arranged circumferentially about the exterior surface of the mandrel and a biasing device in contact with one longitudinal end of each bow spring. The biasing device is configured to apply longitudinal biasing force to the longitudinal end of the respective bow spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.