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1970-06-05 |
1972-11-10 |
Boehler & Co Ag Geb |
Rock drill bits, in particular for percussion drills
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1973-10-10 |
1975-05-27 |
Sam C Skidmore |
Combination rotary and percussion drill bit
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1974-05-16 |
1975-10-28 |
Adel E Sheshtawy |
Rotary drilling bit
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1974-07-01 |
1975-11-11 |
Hughes Tool Co |
Rotary percussion earth boring bit
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1974-08-19 |
1976-04-20 |
Vance Industries, Inc. |
Archimedes spiral drill bit
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1975-02-03 |
1976-05-11 |
Skidmore Sam C |
Percussion drill bit
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1975-12-15 |
1977-02-01 |
Kennametal Inc. |
Impact or demolition tool
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GB1583839A
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1977-06-22 |
1981-02-04 |
Christensen Inc |
Well casing window mill
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1977-06-22 |
1981-05-12 |
Christensen, Inc. |
Well casing window mill
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DE2749613B2
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1977-11-05 |
1979-12-20 |
Fried. Krupp Gmbh, 4300 Essen |
Impact drill bit for rock drilling
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DE2856205A1
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*
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1978-12-27 |
1980-07-10 |
Hilti Ag |
Rock drill head assembly - has protruding steel insets in ring segments with axial grooves and central recess
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DE3510048C1
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1985-03-20 |
1986-04-10 |
Siegfried 5883 Kierspe Treitz |
Hammer drill bit for rock drilling machines
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1985-05-31 |
1995-01-05 |
Klemm Bohrtech |
Rotary impact drill bit
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SE503325C2
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1990-03-26 |
1996-05-28 |
Sandvik Ab |
dRILL BIT
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1990-05-04 |
1992-03-31 |
Dresser Industries, Inc. |
Unbalanced PDC drill bit with right hand walk tendencies, and method of drilling right hand bore holes
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SE508490C2
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1996-03-14 |
1998-10-12 |
Sandvik Ab |
Rock drill bit for striking drilling
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1997-06-30 |
2002-03-13 |
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Improvements in or relating to drill bits
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1997-06-30 |
2005-07-19 |
Smith International |
Drill bit with large inserts
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2005-11-21 |
2012-10-30 |
Schlumberger Technology Corporation |
Turbine driven hammer that oscillates at a constant frequency
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2005-11-21 |
2009-09-22 |
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Drilling at a resonant frequency
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2005-12-22 |
2009-12-01 |
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Downhole hammer assembly
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2005-11-21 |
2013-09-10 |
Schlumberger Technology Corporation |
Downhole mechanism
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2005-11-21 |
2013-04-02 |
Schlumberger Technology Corporation |
Flow guide actuation
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2005-11-21 |
2008-09-16 |
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Rotary valve for a jack hammer
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2005-11-21 |
2010-07-13 |
Schlumberger Technology Corporation |
Drill bit with a retained jack element
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2006-03-23 |
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Jack element with a stop-off
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2005-11-21 |
2009-05-19 |
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Jet arrangement for a downhole drill bit
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2005-11-21 |
2009-03-03 |
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Jack element adapted to rotate independent of a drill bit
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2006-03-23 |
2008-09-02 |
Hall David R |
Bi-center drill bit
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2005-11-21 |
2013-09-03 |
Schlumberger Technology Corporation |
Lead the bit rotary steerable tool
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2006-03-24 |
2009-08-11 |
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Jack element for a drill bit
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2006-03-23 |
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Jack element in communication with an electric motor and or generator
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2005-11-21 |
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Drill bit
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2006-11-01 |
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Cam assembly in a downhole component
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2006-12-15 |
2009-10-13 |
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System for steering a drill string
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2006-03-23 |
2013-01-29 |
Schlumberger Technology Corporation |
Lead the bit rotary steerable tool
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2005-11-21 |
2009-07-14 |
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Downhole steering
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2009-11-17 |
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Fluid-actuated hammer bit
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2006-03-23 |
2012-11-27 |
Schlumberger Technology Corporation |
Drill bit transducer device
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2005-11-21 |
2010-06-08 |
Schlumberger Technology Corporation |
Drill bit porting system
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2005-11-21 |
2012-10-30 |
Schlumberger Technology Corporation |
Downhole turbine
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2005-11-21 |
2011-06-28 |
Schlumberger Technology Corporation |
Downhole mechanism
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2005-11-21 |
2012-07-24 |
Schlumberger Technology Corporation |
Downhole percussive tool with alternating pressure differentials
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2006-03-23 |
2012-03-06 |
Schlumberger Technology Corporation |
Drill bit with an electrically isolated transmitter
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2012-06-26 |
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Lead the bit rotary steerable system
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2006-01-18 |
2011-03-08 |
Schlumberger Technology Corporation |
Downhole drive shaft connection
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2006-03-23 |
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Downhole percussive tool with alternating pressure differentials
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2006-03-23 |
2011-09-06 |
Schlumberger Technology Corporation |
Downhole hammer assembly
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2006-03-23 |
2010-04-13 |
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Indenting member for a drill bit
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2006-03-23 |
2010-07-27 |
Schlumberger Technology Corporation |
Drill bit
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2006-08-11 |
2013-11-26 |
Schlumberger Technology Corporation |
Downhole drill bit
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2006-08-11 |
2014-01-07 |
Schlumberger Technology Corporation |
Pointed diamond working ends on a shear bit
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2006-08-11 |
2011-02-15 |
Schlumberger Technology Corporation |
Drill bit nozzle
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2008-02-14 |
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Roof Mining Drill Bit
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2007-06-22 |
2012-02-28 |
Schlumberger Technology Corporation |
Rotary drag bit with pointed cutting elements
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2006-08-11 |
2013-12-31 |
Schlumberger Technology Corporation |
Fixed bladed bit that shifts weight between an indenter and cutting elements
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2006-08-11 |
2012-08-14 |
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Roof bolt bit
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2006-08-11 |
2010-03-11 |
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Cutting Element with Low Metal Concentration
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2006-08-11 |
2016-04-19 |
David R. Hall |
High impact resistant degradation element
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2006-08-11 |
2014-05-06 |
Schlumberger Technology Corporation |
Method for drilling with a fixed bladed bit
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2006-08-11 |
2015-06-09 |
Schlumberger Technology Corporation |
Downhole drill bit
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2006-08-11 |
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Degradation assembly
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Shank for an attack tool
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Sensor on a formation engaging member of a drill bit
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2006-08-11 |
2012-07-10 |
Schlumberger Technology Corporation |
Thermally stable pointed diamond with increased impact resistance
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2006-08-11 |
2009-12-29 |
Hall David R |
Pick assembly
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2006-08-11 |
2013-10-29 |
Schlumberger Technology Corporation |
Cutting element attached to downhole fixed bladed bit at a positive rake angle
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2007-12-21 |
2012-10-23 |
Hall David R |
Retention for holder shank
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2006-08-11 |
2012-06-19 |
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Holder assembly
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2006-08-11 |
2015-09-29 |
Schlumberger Technology Corporation |
Pointed working ends on a drill bit
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2006-10-13 |
2009-05-05 |
Hall David R |
Percussive drill bit
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2006-10-26 |
2015-02-24 |
Schlumberger Technology Corporation |
High impact resistant tool with an apex width between a first and second transitions
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2006-10-26 |
2015-06-30 |
Schlumberger Technology Corporation |
Dense diamond body
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2006-10-27 |
2011-06-07 |
Schlumberger Technology Corporation |
Method of assembling a drill bit with a jack element
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2007-01-03 |
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Apparatus and method for vibrating a drill bit
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Drill bit with a pointed cutting element
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2010-04-23 |
2014-09-23 |
Schlumberger Technology Corporation |
Tracking shearing cutters on a fixed bladed drill bit with pointed cutting elements
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2007-02-12 |
2013-01-15 |
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Drill bit with a pointed cutting element and a shearing cutting element
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2007-05-15 |
2011-04-19 |
Schlumberger Technology Corporation |
Spring loaded pick
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2011-01-11 |
Schlumberger Technology Corporation |
Clutch for a jack element
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2007-09-06 |
2010-05-25 |
Schlumberger Technology Corporation |
Downhole jack assembly sensor
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2007-09-06 |
2011-06-28 |
Schlumberger Technology Corporation |
Sensor for determining a position of a jack element
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2008-04-30 |
2013-09-24 |
Schlumberger Technology Corporation |
Layered polycrystalline diamond
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2009-04-16 |
2012-12-04 |
Schlumberger Technology Corporation |
Seal with contact element for pick shield
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2009-04-29 |
2014-04-22 |
Schlumberger Technology Corporation |
Drill bit cutter pocket restitution
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2010-04-01 |
2013-10-08 |
David R. Hall |
Inner bit disposed within an outer bit
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2010-05-11 |
2013-04-16 |
David R. Hall |
Central cutting region of a drilling head assembly
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2010-10-01 |
2014-09-02 |
David R. Hall |
Drill bit steering assembly
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2010-10-01 |
2012-12-18 |
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Timed Steering Nozzle on a Downhole Drill Bit
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2016-11-29 |
2020-09-16 |
Mincon Int Ltd |
Drill bits
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2017-01-13 |
2019-12-03 |
Baker Hughes, A Ge Company, Llc |
Impregnated drill bit including a planar blade profile along drill bit face
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2023-04-17 |
2024-07-02 |
Saudi Arabian Oil Company |
Hybrid impression block
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