Drill string, connection system, earth drilling device and method to connect a drill string section
US9725962B2 · kind B2 · utility
1Cited by
12References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Dec 2, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/03
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill string section includes at least one plug-and-rotate seat (bayonet seat) for interacting with a (bayonet) catch, wherein the seat allows an additional plug-in step for fixing the catch in a connection secure against rotation in both directions of rotation about the longitudinal axis of the drill string section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.