Drill pipe handling apparatus
US4897009A · kind A · utility
8Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1989 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Jan 5, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/146
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Drill pipe handling apparatus including a magazine for holding a plurality of lengths of drill pipe and delivering each pipe into position for its removal by drilling apparatus which is operable to drill the pipe into the ground at an angle off vertical, having a brake for preventing rotation of the magazine such as might otherwise occur due to the magazine being in an unbalanced condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.