Manifold arrangement for use with a top drive power unit
US4854383A · kind A · utility
92Cited by
14References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/05
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A manifold arrangement for use with a top drive power unit to enable fluid circulation to be conducted to a well string for well bore conditioning to be effected with cementing plugs in place in the manifold arrangement and for conducting a pumpable substance such as cement to the well string without first circulating it through the top drive power unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.