Mud saver valve with increased flow check valve
Patent
·
OSTI ID:6498701
This patent describes a closure plug. It is mounted in a mud saver valve for retaining fluids within a drill string. The mud saver valve includes a tubular body adapted to be disposed within the drill string and an axially movable piston having a fluid passageway and disposed within the tubular body.
- Assignee:
- Drilex Systems, Inc., Houston, TX (USA)
- Patent Number(s):
- US 4955949; A
- Application Number:
- PPN: US s 7-305319
- OSTI ID:
- 6498701
- 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
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FLOW REGULATORS
FLUIDS
NATURAL GAS WELLS
OIL WELLS
PIPES
RELIEF VALVES
VALVES
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FLOW REGULATORS
FLUIDS
NATURAL GAS WELLS
OIL WELLS
PIPES
RELIEF VALVES
VALVES
WELLS