Pipe wiper system
Patent
·
OSTI ID:5671766
This patent describes improvement in a pipe wiper assembly for stripping fluid from the outer surface of a well string. The assembly comprises: a container having side walls, a pair of pipe wiper blades situated within the container and movable between an open position, wherein they are disassociated from the well string, and a closed position, wherein they are pressed against the well string. The improvement comprises: a frame situated within the container, for limited horizontal movement therein, having a horizontal guideway to accept the pipe wiper blades for movement from opposite sides of the well string between the open and the closed positions; a pair of fluid power cylinder assemblies for each of the pipe wiper blades, mounted on the frame, arranged for linking the frame and the pipe wiper blade for movement between the open and the closed positions; and flexible means, connected to the fluid power cylinder assembly, for supplying fluid power thereto.
- Assignee:
- NOV; NOV-91-016071; EDB-91-092076
- Patent Number(s):
- A; US 4982787
- Application Number:
- PPN: US 7-495470
- OSTI ID:
- 5671766
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wiper device for stripping fluid from well pipe
Pipe wiper and washer system
Pneumatic pipe wiper system
Patent
·
Tue Jul 03 00:00:00 EDT 1984
·
OSTI ID:6525625
Pipe wiper and washer system
Patent
·
Tue Apr 07 00:00:00 EDT 1992
·
OSTI ID:5125187
Pneumatic pipe wiper system
Patent
·
Tue Sep 01 00:00:00 EDT 1987
·
OSTI ID:6070152