Drilling head method and apparatus
Patent
·
OSTI ID:6322918
A rotary drilling head wherein rotary friction between the rotary spindle assembly and the spindle housing is limited by improvements in bearing and seal lubrication and by seal structure such that the gripping action of a resiliently flexible packer on a drill string provides a rotary drive connection sufficient to impart rotation to the spindle assembly through rotation of the drill string.
- Assignee:
- Washington Rotating Control Heads
- Patent Number(s):
- US 4531591
- OSTI ID:
- 6322918
- 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
BEARINGS
DESIGN
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
FRICTION
LUBRICATION
MOTION
NATURAL GAS WELLS
OIL WELLS
PIPES
ROTARY DRILLING
ROTARY DRILLS
ROTATION
SEALS
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BEARINGS
DESIGN
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
FRICTION
LUBRICATION
MOTION
NATURAL GAS WELLS
OIL WELLS
PIPES
ROTARY DRILLING
ROTARY DRILLS
ROTATION
SEALS
WELLS