Drilling tool with non-rotating sleeve
US6840336B2 · kind B2 · utility
37Cited by
15References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | May 6, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/068
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention refers to a drilling tool and method that, among other aspects, provides for a sleeve with expansible pads for positioning the drilling tool in the desired direction during drilling. The pads are hydraulically expanded and retracted by a valve system which selectively diverts mud flowing through the tool to the desired pads. The tool may also be provided with a flexible tube connecting the sleeve to drilling tool for maneuvering along deviations or curves in the wellbore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.