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2011
|
Invention
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Adjustable body supported cutter arms for underreamer. An underreamer for connection with a rotar... |
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2010
|
Invention
|
Hard rock rotary drill bit and method of drilling using crowned cutter elements.
This rotary dri... |
|
|
Invention
|
Positive engagement underreamer and method. An underreamer that can be assembled easily is formed... |
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2009
|
Invention
|
Centralized bi-center reamer and method of use.
This apparatus provides an underreamer and a rea... |
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2006
|
Invention
|
Enhanced drill bit lubrication apparatus and method. A lubricating nutating single cone drill bit... |
|
|
Invention
|
Drill bit lubrication apparatus and method. A lubricating nutating single cone drill bit 10 is di... |
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2005
|
Invention
|
Underreamer and method of use. The present invention discloses a collapsible drilling assembly ha... |
|
|
Invention
|
Improved underreamer and method of use. The present invention discloses a collapsible drilling as... |
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2004
|
Invention
|
Nutating single cone drill bit. The present invention includes a nutating single cone drill bit w... |
|
|
Invention
|
Nutating single cone drill bit. A nutating single cone drill bit includes a bit shank defining a ... |
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2003
|
Invention
|
Reamer having toroidal crusher body and method of use. The present invention provides a reamer (1... |
|
2001
|
Invention
|
Underreamer and method of use. An underreamer (5) is formed from a tubular body (10) having a lon... |
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2000
|
Invention
|
Hole opener with multisized, replaceable arms and cutters. A hole opener (10) having a tubular bo... |
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1998
|
Invention
|
Cantilevered hole opener. A hole opener for enlarging the diameter of bore holes, having a plural... |
|
1992
|
Invention
|
Well orienting tool and method of use. A down hole well tool shown in the form of an orienting to... |
|
1990
|
Invention
|
Blade or member to drill or enlarge a bore in the earth and method of forming. A blade for a memb... |
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1988
|
Invention
|
Seal cage assembly for relatively movable members. A rotatable seal cage assembly for positioning... |
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1987
|
Invention
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Arrangement for reducing seal damage between rotatable and stationary members. A sealing relation... |
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1985
|
Invention
|
Bore hole enlarging arrangement and method. A bore hole enlarging method and arrangement for conn... |
