Handling and recovery devices for tubular members and associated methods
US9546524B2 · kind B2 · utility
5Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Jun 6, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/008
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Implementations described herein include a hoisting device and method for handling, coupling and recovery of tubular members such as drill string components. The hoisting device has a self-energizing gripping means configured to releasably engage a drill string component. In one aspect, the self-energizing gripping means can be operable to increase at least one of a radial biasing force and a contact friction force applied to a drill string component, causing the gripping means to increase the overall gripping force applied to the component with minimal effort exerted by a hoisting device operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.