Apparatus and methods for tubular makeup interlock
US6742596B2 · kind B2 · utility
159Cited by
76References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | May 17, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and methods to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used for running in casing, running in wellbore components or for a drill string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.