Drilling head method and apparatus

Patent · Tue Jul 30 00:00:00 EDT 1985

OSTI ID:6322918

Johnston, V R

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
• Resource Relation: Patent File Date: Filed date 24 Aug 1983; Other Information: PAT-APPL-526067
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
ROTARY DRILLING
OIL WELLS
ROTARY DRILLS
DESIGN
BEARINGS
DRILL PIPES
FRICTION
LUBRICATION
ROTATION
SEALS
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MOTION
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing