Downhole tool string component that is protected from drilling stresses
US8201645B2 · kind B2 · utility
14Cited by
58References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Apr 10, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one aspect of the present invention, a downhole tool string component has a first and second threaded end on a mandrel, the first threaded end attached to a first sleeve and the second threaded end attached to a second sleeve. An intermediate sleeve assembly is disposed circumferentially around the mandrel and intermediate the first and second threaded ends, and the intermediate sleeve assembly is primarily isolated from stress of the first or second sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.