Flow diverter
US4444250A · kind A · utility
155Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Dec 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87764
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Flow diverter apparatus is disclosed having a housing and a piston and annular packer disposed therein. The diverter has passages in the piston and housing walls providing fluid communication between the borehole and a vent line. A valve in the vent line is opened before the packer of the apparatus is closed about a tubular member in the bore of the apparatus or completely closes the vertical flow path of the bore of the apparatus when no object is therein, thereby diverting pressurized borehole fluid away from the rig equipment and personnel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.