Adjustable mechanism for stabbing and threading a drill pipe safety valve
Patent
·
OSTI ID:5568411
This patent describes an apparatus for threading a valve into a well conduit for shutting off upward flow therethrough. The improvement consists of: adjustable drive means for coordinating rotation and vertical displacement of the valve. The drive means operative to thread the valve into a drill pipe thread pitches.
- Assignee:
- NOV; EDB-89-151597; NOV-89-075495
- Patent Number(s):
- US 4846271
- OSTI ID:
- 5568411
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
JOINTS
MACHINING
NATURAL GAS WELLS
OIL WELLS
PIPES
RELIEF VALVES
THREADED JOINTS
TOOLS
VALVES
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
JOINTS
MACHINING
NATURAL GAS WELLS
OIL WELLS
PIPES
RELIEF VALVES
THREADED JOINTS
TOOLS
VALVES
WELLS