Pipe handling apparatus and method
US4791997A · kind A · utility
146Cited by
13References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1988 |
| Grant date | Dec 20, 1988 |
| Priority date | — |
| Expiry date | Jan 7, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pipe handling apparatus for a drilling rig is mounted on the rig floor. The drilling rig has a top drive with a power drive stem. Elevators are suspended below the drive stem. The lifting member has a supporting arm to receive the bottom of a stand of drill pipe lifted by the elevators. A stabilizing arm is mounted to the lifting member above the supporting arm to stabilize the stand. The lifting member telescopes upward to slide the stand of drill pipe upward through the elevators and into engagement with the drive stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.