Actuation system for an oilfield tubular handling system
US7878237B2 · kind B2 · utility
37Cited by
18References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | May 12, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An actuation system for a tubular handling mechanism of a tubular handling assembly has a mud flow path passing through rotating parts and non-rotating parts of the tubular handling assembly. A ball drop assembly has an opening to the mud flow path through which a ball is released. The ball drop assembly opening is positioned in a non-rotating part. A lateral passage joins the mud flow path downstream of where the ball is released. A valve is positioned in the mud flow path at the lateral passage for selectively directing a purge fluid from the mud flow path out the lateral passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.