Top drive well casing system
US6920926B2 · kind B2 · utility
26Cited by
12References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2004 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Jan 16, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/084
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator can remotely manipulate the elevators to pick up and position a joint of casing above the casing already secured in the drilling hole. The operator can then engage the gripper head and use the rotational capability of the top drive to remotely couple the two joints of casing together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.