| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 01/03/2007 | CN2854044Y Square pile drill for boring and concreting |
| 01/03/2007 | CN1888373A Drilling bit for borehole pump pouring large flowing concrete and guniting enlarging footing piling |
| 01/02/2007 | US7156187 Electric hand screwdriver with adjustable head |
| 01/02/2007 | CA2330987C Protected lubricant reservoir with pressure control for sealed bearing earth boring drill bit |
| 01/02/2007 | CA2324705C Dual cutting mill |
| 01/02/2007 | CA2321469C Dual-seal drill bit with fluid cleaning capability |
| 01/02/2007 | CA2294447C Drill bit directional nozzle |
| 01/02/2007 | CA2259072C Automated hardfacing system |
| 12/27/2006 | EP1735520A2 Improvements in or relating to rock drilling equipment |
| 12/27/2006 | CN2851520Y Hydraulic diameter-changeable type stabilizer |
| 12/27/2006 | CN2851505Y PDC combined drill bit |
| 12/27/2006 | CN2851504Y Hard alloy sheet for drill bit |
| 12/27/2006 | CN2851503Y Hydraulic automatic anti-deflection drilling tools |
| 12/27/2006 | CN2851502Y Hole expander blade |
| 12/27/2006 | CN1886573A Drill bit with protection member |
| 12/26/2006 | US7152703 Compact for earth boring bit with asymmetrical flanks and shoulders |
| 12/26/2006 | US7152702 Modular system for a back reamer and method |
| 12/26/2006 | US7152701 Cutting element structure for roller cone bit |
| 12/26/2006 | US7152346 Method for making a trench wall in the ground, trench wall cutter and trench wall cutting device |
| 12/21/2006 | WO2005084376A3 Rotating systems associated with drill pipe |
| 12/21/2006 | US20060283640 Stepped polycrystalline diamond compact insert |
| 12/21/2006 | US20060283639 Drill bit and insert having bladed interface between substrate and coating |
| 12/21/2006 | US20060283638 Shirttails for reducing damaging effects of cuttings |
| 12/21/2006 | DE102005026921A1 Hammer-drilling arrangement for drilling purposes comprises a hammer-drill head, a flushing medium supply unit, a drill pipe with a conveying channel for the drillings and an overlaying pipe connected to a drilling crown |
| 12/20/2006 | EP1734222A1 System for making concrete piles in a ground and drilling- tool therefor |
| 12/20/2006 | EP1733116A1 Device for a drilling tool |
| 12/20/2006 | EP1581722B1 Cutting ring for disk rolls pertaining to partial and/or full cutting machines |
| 12/20/2006 | EP1296792B1 Perforating drill |
| 12/20/2006 | CN2849120Y Drill bar |
| 12/20/2006 | CN2849119Y Profile borer for rock drilling |
| 12/20/2006 | CN2849118Y Unequal width hard alloy sheet of alloy soldering head |
| 12/20/2006 | CN2849117Y Inward concave type coal/rock drill |
| 12/20/2006 | CN1882501A Dual-phase hard material, method for the production thereof and its use |
| 12/20/2006 | CN1291222C Visual device of PDC drilling bit flow field |
| 12/19/2006 | CA2187717C Drilling liquid containment apparatus for a rotating head |
| 12/14/2006 | WO2005043012A3 Ion-beam assisted deposition of inorganic coatings for elastomeric seal wear resistance improvement |
| 12/14/2006 | US20060278442 Drill bit |
| 12/14/2006 | US20060278441 Cutting element apparatuses and drill bits so equipped |
| 12/14/2006 | US20060278436 Drilling apparatus with reduced exposure of cutters |
| 12/14/2006 | US20060278433 Multi-Sectional Percussive Drill Bit Assembly |
| 12/14/2006 | US20060278432 Method of securing a rotary cutter to a body of a down hole tool and a rotary cutter assembly |
| 12/13/2006 | EP1730386A2 Rotating systems associated with drill pipe |
| 12/13/2006 | EP1641998B1 Percussive drill bit |
| 12/13/2006 | EP1438479B1 Liquid seal for wet roof bit |
| 12/13/2006 | EP1339939B1 A drilling tool used in horizontal drilling applications |
| 12/13/2006 | EP1272728B1 Apparatus and method for directional drilling |
| 12/13/2006 | CN2846707Y Heat resistance diamond cutting teeth |
| 12/13/2006 | CN2846706Y Alloy coated drilling bit |
| 12/13/2006 | CN2846705Y Composite diamend layer cutting teeth |
| 12/13/2006 | CN2846704Y Novel hard alloy drill bit |
| 12/13/2006 | CN2846703Y Antomatic anti-inclination well drilling tool |
| 12/13/2006 | CN2846702Y Combined broaching bit for mine |
| 12/13/2006 | CN2846500Y Reinforcing device for flexible drilling road bed |
| 12/12/2006 | US7147068 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 12/12/2006 | US7147064 Laser spectroscopy/chromatography drill bit and methods |
| 12/12/2006 | CA2434378C Easy hold power auger |
| 12/12/2006 | CA2388241C Underreamer and method of use |
| 12/12/2006 | CA2331177C A roller bit with parallel inlayed compacts |
| 12/12/2006 | CA2119410C Rock bit grease composition |
| 12/12/2006 | CA2113054C Ultra hard insert cutters for heel row rotary cone rock bit applications |
| 12/07/2006 | WO2006130332A1 Directable nozzle for rock drilling bits |
| 12/07/2006 | WO2006130066A1 Method for manufacturing a cutting pick |
| 12/07/2006 | DE102004059711A1 Boring device consists of casing tubes with boring chisel located in last casing tube as well as cutting spindle that facilitates driving of the casing tube into the ground |
| 12/07/2006 | CA2603422A1 Method for manufacturing a cutting pick |
| 12/07/2006 | CA2510136A1 Drill bit |
| 12/06/2006 | EP1444404B1 Pile reamer with spoil container |
| 12/06/2006 | CN2844390Y Downhole expandable driller |
| 12/06/2006 | CN1875167A 流体喷射钻具 Drilling fluid jet |
| 12/05/2006 | US7143847 Drilling apparatus |
| 12/05/2006 | US7143846 Method for drilling and drilling apparatus to enable reverse circulation |
| 12/05/2006 | CA2413913C Fracture and wear resistant rock bits |
| 12/05/2006 | CA2233382C Hardfacing on steel tooth cutter element |
| 11/30/2006 | US20060269361 Apparatus for on-grade boring |
| 11/30/2006 | US20060266559 Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance |
| 11/30/2006 | US20060266558 Thermally stable ultra-hard material compact construction |
| 11/30/2006 | US20060266557 Directable nozzle for rock drilling bits |
| 11/30/2006 | US20060266556 Drilling apparatus, method, and system |
| 11/29/2006 | EP1725736A1 Single pass drilling apparatus, use a one -piece drill bit, method and rock bolt for single pass rock bolting. |
| 11/29/2006 | EP1627130B1 Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole |
| 11/29/2006 | EP1272731B1 Drillable drill bit nozzle |
| 11/29/2006 | CN1871408A Nozzle unit and method for excavating a hole in an object |
| 11/29/2006 | CN1287064C Soil excavating tool, swivel, connecting device and ground improving method |
| 11/28/2006 | US7140456 Easy hold power auger |
| 11/28/2006 | US7140454 Well drilling bit |
| 11/28/2006 | US7140448 Stepped polycrystalline diamond compact insert |
| 11/28/2006 | US7140444 Downhole cutting tool and method |
| 11/28/2006 | CA2417318C Expandable underreamer/stabilizer |
| 11/28/2006 | CA2390814C Composite constructions with ordered microstructure |
| 11/28/2006 | CA2338375C Drilling apparatus with a radially displaceable reamer as well as a reamer and a pilot bit |
| 11/28/2006 | CA2326738C Apparatus and method for mitigating wear in downhole tools |
| 11/26/2006 | CA2851894A1 Thermally stable ultra-hard material compact constructions |
| 11/23/2006 | US20060260850 Tool insert |
| 11/23/2006 | US20060260849 Bit for excavation and compaction equipment for erecting piles, and excavation equipment provided with said bit |
| 11/23/2006 | US20060260848 Attachment means for drilling equipment |
| 11/23/2006 | US20060260847 Cutting elements of gage row and first inner row of a drill bit |
| 11/23/2006 | US20060260846 Drill Bit and Cutting Inserts For Hard/Abrasive Formations |
| 11/23/2006 | US20060260845 Stable Rotary Drill Bit |
| 11/22/2006 | EP1570150B1 One-step directional coring or drilling system |
| 11/22/2006 | CN2839544Y Antiimpact PDC drill bit |
| 11/22/2006 | CN2839543Y Mixed PDC cutting piece drilling bit |