Pipe moving apparatus and method
US4834604A · kind A · utility
103Cited by
29References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Oct 19, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/155
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Machine for moving casing or pipe from a horizontal position adjacent a well to a vertical position over the well bore. The machine includes a boom movable between a lowered position and a raised position by a hydraulic ram. A strongback grips the pipe and holds the same until the pipe is vertically positioned. Thereafter, an hydraulic ram on the strongback is actuated thereby lowering the pipe or casing onto the string suspended in the well bore and the additional pipe or casing joint is threaded thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.