| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 10/03/2007 | CN200955357Y Extrusion-formed '-' shaped alloy drill-rod head |
| 10/03/2007 | CN200955356Y Prolongable-flexible-axle drill-bit for drilling concrete, brick wall and dredging pipeline |
| 10/03/2007 | CN200955355Y Gear-wheel drill-bit with pile-up welding notocentrum teeth |
| 10/03/2007 | CN101048570A Polycrystalline cutter with multiple cutting edges |
| 10/02/2007 | US7275605 Rotatable drill shoe |
| 10/02/2007 | CA2197351C Integral drilling tool bit |
| 09/27/2007 | US20070221417 Jack Element in Communication with an Electric Motor and or Generator |
| 09/27/2007 | US20070221416 Bi-Center Drill Bit |
| 09/27/2007 | US20070221415 Jack Element with a Stop-off |
| 09/27/2007 | US20070221414 Releasable mill |
| 09/27/2007 | US20070221406 Jack Element for a Drill Bit |
| 09/26/2007 | EP1837481A1 Drilling tool and drilling method |
| 09/26/2007 | EP1687505B1 Fluid jet drilling tool |
| 09/26/2007 | EP1276953B1 Expandable apparatus for drift and reaming a borehole |
| 09/26/2007 | CN200952353Y Steel body type diamond composite sheet drill bit body |
| 09/26/2007 | CN200952352Y Geophysical prospecting rotary drill bit for well wall protection and raising chip removabl performance |
| 09/26/2007 | CN200952348Y Long auger boring machine with spillover device |
| 09/26/2007 | CN200952019Y Blast furnace opening tap hole drill |
| 09/26/2007 | CN100339552C Mining three roller bit with an antirunback |
| 09/20/2007 | WO2006012731A3 Integrated magnetic ranging tool |
| 09/20/2007 | US20070215390 Novel bits and cutting structures |
| 09/20/2007 | US20070215389 Matrix Drill Bits With Back Raked Cutting Elements |
| 09/20/2007 | US20070215388 Downhole Apparatus for Mobilising Drill Cuttings |
| 09/19/2007 | EP1834062A2 Downhole tool |
| 09/19/2007 | CN200949424Y Hydraulic driving two-way hole expanding device during drilling |
| 09/19/2007 | CN200949422Y Rod-pit drilling rod |
| 09/19/2007 | CN101040099A Anchoring drill bit, system and method of anchoring |
| 09/19/2007 | CN101037928A Roller cone drill bit with debris flow paths through associated support arms |
| 09/18/2007 | US7270199 Cutting element with a non-shear stress relieving substrate interface |
| 09/18/2007 | US7270197 Steerable soil displacement hammer |
| 09/18/2007 | US7270196 Drill bit assembly |
| 09/13/2007 | WO2007103245A2 Automated steerable hole enlargement drilling device and methods |
| 09/13/2007 | US20070209842 Hard material bit |
| 09/13/2007 | CA2644442A1 Automated steerable hole enlargement drilling device and methods |
| 09/12/2007 | CN200946460Y Fish tail-shape cutting structure of PDC drill bit |
| 09/12/2007 | CN200946459Y Positive rake angle cutting structure PDC borer |
| 09/12/2007 | CN101033680A Gauge structure of single cone bit |
| 09/11/2007 | US7267187 Braze alloy and method of use for drilling applications |
| 09/11/2007 | US7267186 Magnetic face seal for rock drill bit bearings |
| 09/11/2007 | US7267183 Drill bit lubricant with enhanced load carrying/anti wear properties |
| 09/11/2007 | US7267176 Downhole resettable jar tool with axial passageway and multiple biasing means |
| 09/11/2007 | CA2509318C Metal seal with impact-absorbing ring |
| 09/11/2007 | CA2426258C An apparatus for retrieving metal debris from a well bore |
| 09/07/2007 | WO2007100857A2 Nozzle that produce angular momentum and methods for making and using same |
| 09/06/2007 | US20070205024 Steerable fixed cutter drill bit |
| 09/06/2007 | US20070205023 Fixed cutter drill bit for abrasive applications |
| 09/05/2007 | EP1828535A2 Micropore engagement surfaces for earth boring bit |
| 09/05/2007 | EP1266125B8 Rotatable cutting tool |
| 09/05/2007 | CN200943448Y Hydraulic controlled spreading type drill bit device for enlarging diameter |
| 09/05/2007 | CN200943447Y Two body type composite sheet combined drill bit |
| 09/05/2007 | CN100335738C High-pressure water jet drill bit capable of punching and cutting by switching of water pressure |
| 09/04/2007 | US7264879 Composite constructions with oriented microstructure |
| 08/30/2007 | WO2007098159A2 Backup cutting element insert for rotary drill bits |
| 08/30/2007 | US20070199739 Cutting element insert for backup cutters in rotary drill bits, rotary drill bits so equipped, and methods of manufacture therefor |
| 08/30/2007 | CA2660854A1 Cutting element insert for backup cutters in rotary drill bits, rotary drill bits so equipped, and methods of manufacture therefor |
| 08/29/2007 | CN200940447Y Drill bit water hole clamp with filter net |
| 08/29/2007 | CN200940446Y Pile and hole enlaring drill bit for drilling concrete |
| 08/29/2007 | CN101027456A Bottom drill combination |
| 08/29/2007 | CN101025076A Roller cone drill bit with enhanced debris diverter grooves |
| 08/28/2007 | US7261753 Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool |
| 08/28/2007 | US7261752 Molten braze-coated superabrasive particles and associated methods |
| 08/28/2007 | US7261169 Shank for a rotary/percussion tool |
| 08/23/2007 | WO2007094532A1 Auger boring machine having vibrator and boring method using the same |
| 08/23/2007 | WO2007093771A1 Downhole assembly and cutter assembly |
| 08/23/2007 | US20070193785 Drilling head for an anchor |
| 08/23/2007 | US20070193784 Rock drilling head |
| 08/23/2007 | US20070193783 Drilling head |
| 08/23/2007 | US20070193782 Polycrystalline diamond carbide composites |
| 08/23/2007 | US20070193781 Roller Cone Drill Bit With Debris Flow Paths Through Associated Support Arms |
| 08/23/2007 | US20070193779 Roller Cone Drill Bit With Debris Diverter Plugs |
| 08/23/2007 | CA2641391A1 Downhole assembly and cutter assembly |
| 08/22/2007 | EP1819483A2 Methods of maximizing retention of superabrasive particles in a metal matrix |
| 08/22/2007 | EP1819469A1 Cutting insert with cutting tips anchor portions. |
| 08/22/2007 | CN2937441Y Double-wing concrete pouring drill bit of pile foundation drilling machine |
| 08/22/2007 | CN101023240A 岩石钻头 Rock drill |
| 08/22/2007 | CN101021146A Inverted feaming reamer |
| 08/21/2007 | US7260514 Bending moment |
| 08/21/2007 | US7258180 Rotary hammerdrill bit |
| 08/21/2007 | US7258179 Rotary bit with an indenting member |
| 08/21/2007 | US7258178 Auger planter |
| 08/21/2007 | US7258177 Fracture and wear resistant compounds and rock bits |
| 08/21/2007 | US7258176 Drill bit |
| 08/21/2007 | US7258175 Method and apparatus and program storage device adapted for automatic drill bit selection based on earth properties and wellbore geometry |
| 08/21/2007 | US7258165 Hole opener and drillable casing guide and methods of use |
| 08/21/2007 | CA2444972C Apparatus and method for forming a pilot ledge in a wellbore |
| 08/21/2007 | CA2299606C Bearing assembly for wellbore drilling |
| 08/21/2007 | CA2280669C Rotary cone drill bit with improved bearing system |
| 08/16/2007 | US20070192074 Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
| 08/16/2007 | US20070192073 Multiple inserts of different geometry in a single row of a bit |
| 08/16/2007 | US20070187155 Thermally stable ultra-hard polycrystalline materials and compacts |
| 08/16/2007 | US20070187154 Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool |
| 08/16/2007 | US20070187153 Polycrystalline diamond apparatuses and methods of manufacture |
| 08/16/2007 | US20070187149 Drill bit |
| 08/16/2007 | US20070186483 Composite abrasive compact |
| 08/15/2007 | EP1818501A2 Advanced expandable reaming tool |
| 08/15/2007 | EP1818500A1 Positive pressure equalizing system |
| 08/15/2007 | EP1818499A1 Apparatus for simultaneously drilling and casing boreholes |
| 08/15/2007 | CN2934549Y Bearing sealing structure for roller drill bit |
| 08/15/2007 | CN1332116C Well bottom hydraulic suction pressure lowering drilling tool |
| 08/15/2007 | CN1332115C Percussion drill bit and a button therefor |