Drill pipe transfer arm for angle drilling
US4892160A · kind A · utility
21Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1989 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Jun 13, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/146
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill pipe transfer arm supports the bottom portion of a drill pipe and positions it in relationship to the drill string to permit angle drilling with a tilted drill tower. The transfer arm is uniquely suited to circular carousels and features a drill pipe conforming saddle which permits close-quarter operation with a packed carousel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.