Hydromechanical drilling device
Patent
·
OSTI ID:863156
- Rolla, MO
A hydromechanical drilling tool which combines a high pressure water jet drill with a conventional roller cone type of drilling bit. The high pressure jet serves as a tap drill for cutting a relatively small diameter hole in advance of the conventional bit. Auxiliary laterally projecting jets also serve to partially cut rock and to remove debris from in front of the bit teeth thereby reducing significantly the thrust loading for driving the bit.
- Research Organization:
- Missouri Univ., Rolla (USA)
- Assignee:
- Curators of University of Missouri (Columbia, MO)
- Patent Number(s):
- US 4106577
- OSTI ID:
- 863156
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/175/
advance
auxiliary
bit
combines
cone
conventional
cut
cutting
debris
device
diameter
drill
drilling
driving
front
hydromechanical
hydromechanical drilling
jet
jets
laterally
loading
partially
pressure
pressure water
projecting
reducing
reducing significantly
relatively
remove
remove debris
rock
roller
serve
serves
significantly
tap
teeth
thrust
tool
type
water
water jet
advance
auxiliary
bit
combines
cone
conventional
cut
cutting
debris
device
diameter
drill
drilling
driving
front
hydromechanical
hydromechanical drilling
jet
jets
laterally
loading
partially
pressure
pressure water
projecting
reducing
reducing significantly
relatively
remove
remove debris
rock
roller
serve
serves
significantly
tap
teeth
thrust
tool
type
water
water jet