| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 02/09/2011 | CN201738815U Inclining-prevention PDC drill bit |
| 02/09/2011 | CN201738814U Inner helical barrel type combined rock drill |
| 02/09/2011 | CN201738813U Well drilling equipment and well fixing equipment for radial horizontal well with ultra-short radius |
| 02/09/2011 | CN101970785A Drill bit head for percussion drilling apparatus |
| 02/09/2011 | CN101967963A Formation coring apparatus and methods |
| 02/09/2011 | CN101967956A Tricone bit used for high-rotation speed drilling |
| 02/09/2011 | CN101967826A Vibrating bar-inserting long spiral air-cooled drilling rock-socketed pile forming method and equipment |
| 02/09/2011 | CN101065554B A sidetracking system and method, and its milling cutter and whipstock |
| 02/08/2011 | US7882908 Drill |
| 02/08/2011 | US7882907 Earth boring bit |
| 02/08/2011 | US7882905 Stabilizer and reamer system having extensible blades and bearing pads and method of using same |
| 02/08/2011 | CA2598143C Diamond bit steel body cutter pocket protection |
| 02/08/2011 | CA2597819C Method and device for producing a borehole in the soil |
| 02/03/2011 | WO2011014591A2 Manufacturing methods for high shear roller cone bits |
| 02/03/2011 | WO2011014590A2 High shear roller cone drill bits |
| 02/03/2011 | WO2011012708A1 Polycrystalline diamond compact |
| 02/03/2011 | US20110024201 Polycrystalline diamond composite compact elements and tools incorporating same |
| 02/03/2011 | US20110024200 Cutting element and method of forming thereof |
| 02/03/2011 | US20110024199 Seal Ring With Auxiliary Ring for Earth-Boring Bit |
| 02/03/2011 | US20110024198 Bearing systems containing diamond enhanced materials and downhole applications for same |
| 02/03/2011 | US20110024197 High shear roller cone drill bits |
| 02/03/2011 | US20110024194 System and method for one-trip hole enlargement operations |
| 02/03/2011 | US20110024193 Optimized central cutter and method |
| 02/03/2011 | CA2769170A1 Polycrystalline diamond composite compact |
| 02/02/2011 | CN201730551U Diamond drill bit |
| 02/02/2011 | CN201730550U Composite drill |
| 02/02/2011 | CN201730549U Disc valve revolving drilling tool |
| 02/02/2011 | CN201730548U Back expansion drill |
| 02/02/2011 | CN201730541U Hydraulic auger drill |
| 02/02/2011 | CN201730540U Rotary drilling machine and cylindrical drill thereof |
| 02/02/2011 | CN201730126U Full-hydraulic trench excavator |
| 02/02/2011 | CN101963044A PDC (Polycrystalline Diamond Compact) drilling bit with circular shoulders |
| 02/02/2011 | CN101963043A Positive pressure jet spiral sampling drill |
| 02/02/2011 | CN101963042A Side tooth gage reamer |
| 02/02/2011 | CN101963041A Cone bit with annular elastic floating bushing |
| 02/01/2011 | US7879129 Wear part formed of a diamond-containing composite material, and production method |
| 02/01/2011 | US7878275 Matrix bit bodies with multiple matrix materials |
| 02/01/2011 | US7878274 Steel tooth disk with hardfacing |
| 02/01/2011 | US7878271 Drill bit |
| 02/01/2011 | CA2506056C Drilling a borehole |
| 01/27/2011 | WO2011011771A2 Metal-free supported polycrystalline diamond (pcd) and method to form |
| 01/27/2011 | WO2011011290A2 Diamond-enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements |
| 01/27/2011 | WO2011011259A1 Rotary drill bit |
| 01/27/2011 | WO2011011198A2 Roller cone drill bit with lubricant pressure relief mechanism and method |
| 01/27/2011 | WO2009067650A3 Seal with abrasive particles for roller cone bit bearing |
| 01/27/2011 | US20110017520 Metal-free supported polycrystalline diamond and method to form |
| 01/27/2011 | US20110017519 Polycrystalline diamond compacts, method of fabricating same, and various applications |
| 01/27/2011 | US20110017518 Earth-boring tools with improved retention of cutting elements installed within pockets |
| 01/27/2011 | US20110017517 Diamond-enhanced cutting elements, earth-boring tools employing diamond-enhanced cutting elements, and methods of making diamond-enhanced cutting elements |
| 01/27/2011 | US20110017515 Bore hole tool with magnetic blade retention |
| 01/27/2011 | US20110017514 Roller cone drill bit with lubricant pressure relief mechanism and method |
| 01/27/2011 | DE102009034776A1 Method for manufacturing long core hole in wall i.e. masonry, of building i.e. church, involves attaching drill head to drilling rod, and sucking inflow cooling air from bore hole outer side over ring gap surrounding drilling rod |
| 01/26/2011 | EP1616071B1 Drill bit |
| 01/26/2011 | CN201723157U Inwards concave drilling bit of super-strong diamond composite sheet |
| 01/26/2011 | CN201723156U Film coating drill bit for hard rocks |
| 01/26/2011 | CN201723155U Drill without earth fetching |
| 01/26/2011 | CN201723154U Novel sealing structure of rock bit bearing |
| 01/26/2011 | CN201723153U Sliding bearing rock bit with lubrication groove |
| 01/26/2011 | CN101956533A Manufacturing method of PDC bit body |
| 01/26/2011 | CN101956532A Rotary roller reamer |
| 01/26/2011 | CN101956531A Underground horizontal drilling combined drilling tool of oil well drilling platform |
| 01/26/2011 | CN101956530A Underground horizontal bore drilling tool used for petroleum drilling |
| 01/26/2011 | CN101956529A Bearing seal of single-sealing ring cone bit |
| 01/26/2011 | CN101956528A Roller bit of elastic rolling bearing with high rotation speed, high pressure resistance and impact resistance |
| 01/26/2011 | CN101956527A High-pressure and impact resistant bearing roller bit with elastic sliders |
| 01/26/2011 | CN101319599B Side suction type reverse circulation drilling bit |
| 01/26/2011 | CN101061290B Rock drill bit |
| 01/25/2011 | US7874384 Drill bits with increased crown height |
| 01/25/2011 | US7874383 Polycrystalline diamond insert, drill bit including same, and method of operation |
| 01/20/2011 | WO2011008680A2 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |
| 01/20/2011 | WO2011008661A2 Drill bit with extended life seal |
| 01/20/2011 | WO2010120999A3 Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits |
| 01/20/2011 | WO2008066895A3 Discrete element modeling of rock destruction under high pressure conditions |
| 01/20/2011 | US20110011579 Apparatus and System to Allow Tool Passage Ahead of a Bit |
| 01/20/2011 | CA2820193A1 Downhole casing cutting tool |
| 01/19/2011 | EP2274497A2 Reamer with polycrystalline diamond compact inserts |
| 01/19/2011 | CN201714324U Scraper-type steel body PDC airtight coring bit |
| 01/19/2011 | CN201714306U High efficiency PDC drill bit matched with high speed turbine drilling tool |
| 01/19/2011 | CN201714305U Geological drill bit |
| 01/19/2011 | CN201714304U Two-way spiral extruding expansion drilling bit capable of being lengthened |
| 01/19/2011 | CN201714303U Vacuum three-wing bit for hydraulic drilling rig |
| 01/19/2011 | CN201714302U Drilling device |
| 01/19/2011 | CN201714301U Compound seal roller bit |
| 01/19/2011 | CN201714300U Sealing piece for fluorinated coating |
| 01/19/2011 | CN101952540A Drill bit |
| 01/19/2011 | CN101949265A Sapphire spiral complex comprehensive drilling bit |
| 01/19/2011 | CN101949264A Diamond bit for underground horizontal drilling and manufacturing method thereof |
| 01/19/2011 | CN101509351B Non-damage drilling head |
| 01/19/2011 | CN101250983B Single tube all-directional drilling injection slip-casting drilling bit capable of fluid-control starting and stopping auxiliary slip-casting hole |
| 01/18/2011 | CA2596094C Improved milling of cemented tubulars |
| 01/13/2011 | WO2011005996A2 Cutting element for a drill bit used in drilling subterranean formations |
| 01/13/2011 | WO2011005994A2 Cutting element and method of forming thereof |
| 01/13/2011 | WO2011005774A2 Backup cutting elements on non-concentric reaming tools |
| 01/13/2011 | WO2011005404A2 Wear resistant weld overlay on downhole mining components |
| 01/13/2011 | WO2011005403A1 Wear resistant weld overlay on bearing surfaces in tricone mining rockbits |
| 01/13/2011 | WO2010115146A3 Drill bit for earth boring |
| 01/13/2011 | WO2010104777A3 Earth-boring tools with thermally conductive regions and related methods |
| 01/13/2011 | WO2010101881A3 Chip deflector on a blade of a downhole reamer and methods therefor |
| 01/13/2011 | WO2010088233A4 Earth boring tools and bodies of such tools including nozzle recesses, and methods of forming same |
| 01/13/2011 | US20110005841 Backup cutting elements on non-concentric reaming tools |