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2014
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G/S
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Hydraulic drilling and earth boring machines; PDC (polycrystalline diamond compact) drill bits; d... |
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2013
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Invention
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High thermal conductivity hardfacing. A hardmetal composition comprises tungsten carbide in an am... |
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2009
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Invention
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High thermal conductivity hardfacing for drilling applications.
A high thermal conductivity hard... |
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2007
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G/S
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Distributorship services in the field of roller cone and fixed cutter drilling bits for use in th... |
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2006
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Invention
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Roller cone drill bit that includes components with planar reference surfaces for gauging and ins... |
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2005
|
Invention
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Composite structure having a non-planar interface and method of making same.
A composite structu... |
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Invention
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Fluid-soluble pattern material for investment casting process, and methods for using same.
The p... |
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2004
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Invention
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Removable equipment housing for downhole measurements.
The present invention is directed to a re... |
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Invention
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Self-aligning insert for drill bits.
The present invention is generally directed to various embo... |
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Invention
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Equipment housing for downhole measurements.
The present invention is directed to a housing for ... |
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G/S
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Downhole drilling equipment, namely, drill bits, core bits, parts and fittings for all the afores... |
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2003
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G/S
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Polycrystalline diamond compact cutters. |
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Invention
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Hydraulic optimization of drilling fluids in borehole drilling. A method for optimizing drilling ... |
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2002
|
Invention
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Water-treating device. A water-treating device having a water jar, a magnetic agitator, an additi... |
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Invention
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Sub-reamer for bi-center type tools. An improved bi-center with improved directional stability an... |
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|
Invention
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Drilling system and method suitable for coring and other purposes. A wellbore assembly is provide... |
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2001
|
Invention
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Fabrication process for powder composite rod. The present invention relates to a method of formin... |
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Invention
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Rock bit face seal having lubrication gap. A seal arrangement useful in a rolling cutter rock dri... |
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Invention
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Bi-center bit adapted to drill casing shoe. The invention is directed to a bi-center drilling too... |
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Invention
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Failure indicator for rolling cutter drill bit. A bearing failure indicator for sealed and lubric... |
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|
Invention
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Accelerometer caliper while drilling. An accelerometer caliper while drilling arrangement compris... |
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|
Invention
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Fabrication process for high density powder composite hardfacing rod. The present invention is a ... |
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2000
|
Invention
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Rolling cutter drill bits. A rolling cutter drill bit comprises a body and three legs, each leg h... |
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Invention
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Non-circular gauge reaming row inserts. Disclosed is a wear resistant cutting insert for use in r... |
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Invention
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Cutting element with stress reduction. The present invention is directed to an improved cutting e... |
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Invention
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Tooth type drill bit with secondary cutting elements and stress reducing tooth geometry. Disclose... |
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Invention
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Volume reduction mandrel for use in pneumatic isostatic forging. A densified sintered product, su... |
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1999
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Invention
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Single energizer face seal for rocks bits with floating journal bearings. The present invention i... |
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|
Invention
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Drag-type rotary drill bit. There is provided a rotary drag-type drill bit comprising a bit body ... |
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|
Invention
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Rock bit face seal having anti-rotation pins. The invention provides a mechanical face seal for r... |
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|
Invention
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Bi-center bit adapted to drill casing shoe. A bi-center bit adapted to be consecutively used in c... |
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|
Invention
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Cutting element with stress reduction. An improved cutting element is disclosed. The cutting elem... |
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|
Invention
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Rock bit lubricant relief valve. The present invention is a low differential pressure relief valv... |
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|
Invention
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Rock bit hardmetal overlay and proces of manufacture. Methods of forming a new wear and abrasion ... |
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|
Invention
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Method and apparatus for loading lubricant into earth boring bits. A method and apparatus for loa... |
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Invention
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Two stage drill bit. A bi-center downhole drilling bit is disclosed, which bit includes a body de... |
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Invention
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Fixed cutter drill bits with thin, integrally formed wear and erosion resistant surfaces. A fixed... |
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Invention
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Rolling cutter drill bit with stabilized insert holes and method for making a rolling cutter dril... |
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1998
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Invention
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Face seal having strain induced face geometry. A mechanical seal for rotary rock bits with a uniq... |
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Invention
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Pneumatic isostatic forging of sintered compacts. A densified sintered product, such as a rolling... |
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|
Invention
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Wear indicator for rotary drilling tools. A wear indicator is provided for a rotary drilling tool... |
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Invention
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Stabilizing drill bit with improved cutting elements. A drilling tool operational with a rotation... |
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|
Invention
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Cutting element with stress reduction. An improved disc-shaped cutting element including first an... |
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|
Invention
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Reduced erosion nozzle system and method for the use of drill bits to reduce erosion. Subterranea... |
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|
Invention
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Cutting element. A novel cutting element is disclosed as comprised of at an attachment body and a... |
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Invention
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Coring tool. A coring assembly comprising a body securable at its upper end to a mandrel add at i... |
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1997
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Invention
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Bi-center bit with oppositely disposed cutting surfaces. An improved bi-center bit with improved ... |
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Invention
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Rock bit hardmetal overlay and process of manufacture. Methods of forming a new wear and abrasion... |
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|
Invention
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Hardmetal facing for earth boring drill bit. A steel tooth rolling cutter earth boring drill bit ... |
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|
Invention
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Methods and related equipment for rotary drilling. Methods and related equipment for drilling a w... |
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|
Invention
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Hydrostatic thrust face lubrication system. A rolling cutter drill bit comprises a main body and ... |
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1996
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Invention
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Different stiffness energizers for mf seals. A rolling cutter drill bit has at least one roller c... |
