Low stress traction system
US8286716B2 · kind B2 · utility
19Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2008 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Sep 5, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/129
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A technique enables anchoring of a tool in a wellbore. The technique provides traction against a well component without creating high stress concentrations that weaken the well component. An anchoring device comprises anchoring members that are selectively movable to an expanded configuration for anchoring the tool. The anchoring members have traction surfaces able to selectively engage a smooth anchoring surface of the well component at any desired location along the well component. Each traction surface is formed to facilitate traction while minimizing stress concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.