| Patents for E21B 10 - Drill bits (19,464) |
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| 04/26/2012 | WO2012053733A2 Method for constructing a footing at the bottom of a pile and a fixed anchorage portion of a tension member, and tool for expanding a borehole wall for same |
| 04/26/2012 | WO2012052597A1 Method in earth drill bit arrangement assembly and a bit arrangement |
| 04/26/2012 | WO2012051674A1 A drilling apparatus |
| 04/26/2012 | WO2012051648A1 A drill bit |
| 04/26/2012 | WO2012030926A3 Drill bit with adjustable side force |
| 04/26/2012 | WO2012021302A3 Drilling system for enhanced coring and method |
| 04/26/2012 | US20120097458 Diamond bonded construction with thermally stable region |
| 04/26/2012 | US20120097457 Polycrystalline diamond cutting element |
| 04/26/2012 | US20120097456 Earth-boring tools and components thereof including material having precipitate phase |
| 04/26/2012 | US20120097455 Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components |
| 04/25/2012 | EP2443305A2 Hybrid bit with variable exposure |
| 04/25/2012 | CN202202866U Depth gauge for drill bit |
| 04/25/2012 | CN202202814U 金刚石复合片锚杆钻头 PDC anchor drill |
| 04/25/2012 | CN202202813U 一种具有双排齿结构的钻头 A double row of teeth structure with a drill |
| 04/25/2012 | CN202202806U 墙体开孔机 Wall tapping machine |
| 04/25/2012 | CN102425379A 一种形成稳定预破碎区的镶嵌体钻头 A method of forming a stable pre-broken mosaic zone drill |
| 04/25/2012 | CN102425378A Threaded drill bit with sliding chutes |
| 04/25/2012 | CN102425377A 方便排屑的地埋管钻孔钻头 BTA's easy to drill borehole drilling |
| 04/25/2012 | CN102425376A 一种旋挖钻机用的钻具及包括该钻具的旋挖钻机 One kind of rotary drilling rig with drilling and include the drilling of rotary drilling rig |
| 04/25/2012 | CN101144278B 综合多功能钻孔灌注桩机 Bored integrated multifunction machine |
| 04/24/2012 | US8162082 Superabrasive compact including multiple superabrasive cutting portions, methods of making same, and applications therefor |
| 04/24/2012 | US8162081 Force balanced asymmetric drilling reamer and methods for force balancing |
| 04/24/2012 | CA2671193C Fiber-containing diamond-impregnated cutting tools |
| 04/19/2012 | WO2012051509A2 Special curve braze sheet for top loading cutter to get better braze strength |
| 04/19/2012 | WO2012050959A2 Downhole reamer asymmetric cutting structures |
| 04/19/2012 | WO2012050674A1 Bearing systems containing diamond enhanced materials and downhole applications for same |
| 04/19/2012 | WO2012049353A1 Drill assembly |
| 04/19/2012 | WO2012006281A4 Methods of forming inserts and earth-boring tools |
| 04/19/2012 | US20120090900 Special curve braze sheet for top loading cutter to get better braze strength |
| 04/19/2012 | US20120090896 Auger for digging holes |
| 04/19/2012 | CA2814489A1 Bearing systems containing diamond-enhanced materials and downhole applications for same |
| 04/19/2012 | CA2814141A1 A down-the-hole hammer |
| 04/18/2012 | EP2441914A2 Hydraulic breaker |
| 04/18/2012 | EP2440735A2 Drill bit with weight and torque sensors |
| 04/18/2012 | EP2242892B1 Directional drilling system |
| 04/18/2012 | CN202194577U 一种超硬材料潜孔钻头 One kind of superhard material DTH drill |
| 04/18/2012 | CN202194576U 三刀翼金刚石钻头 Mito wing diamond drill |
| 04/18/2012 | CN202194575U 空气潜孔锤对心跟管钻具 DTH hammer drill core with tube |
| 04/18/2012 | CN202194574U 一种复合式钻头 A composite drill bits |
| 04/18/2012 | CN202194573U Well drilling tool used for superficial layer soil texture |
| 04/18/2012 | CN202194572U 一种钻具及具有该钻具的工程机械 One kind of drill and drill having the engineering machinery |
| 04/18/2012 | CN202194571U 一种破碎硬岩钻头 One kind of crushing hard rock drill |
| 04/18/2012 | CN102421984A 旋转式凿岩钻头的轴颈轴承中的空气循环口 The rotary rock bit journal bearing air circulation port |
| 04/17/2012 | US8157029 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same |
| 04/17/2012 | US8157028 Masonry drill bit |
| 04/17/2012 | US8157026 Hybrid bit with variable exposure |
| 04/17/2012 | CA2673112C Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods |
| 04/17/2012 | CA2671313C Rotary drag bits having a pilot cutter configuration and method to pre-fracture subterranean formations therewith |
| 04/17/2012 | CA2669044C Drill bit nozzle assembly, insert assembly including same and method of manufacturing or retrofitting a steel body bit for use with the insert assembly |
| 04/12/2012 | WO2012048025A2 Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| 04/12/2012 | WO2012048017A2 Diamond impregnated cutting structures, earth-boring drill bits and other tools including diamond impregnated cutting structures, and related methods |
| 04/12/2012 | WO2012047863A2 Remotely controlled apparatus for downhole applications and related methods |
| 04/12/2012 | WO2012047847A1 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools |
| 04/12/2012 | WO2012047837A2 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods |
| 04/12/2012 | WO2012047820A1 Method and apparatus for efficient implementation of design changes |
| 04/12/2012 | WO2012047795A1 Micro-jet cooling of cutting tools |
| 04/12/2012 | WO2011160027A4 Oil operated rotary steerable system |
| 04/12/2012 | US20120085585 Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| 04/12/2012 | CA2813943A1 Composite materials including nanoparticles, earth-boring tools and components including such composite materials, polycrystalline materials including nanoparticles, and related methods |
| 04/12/2012 | CA2813709A1 Method and apparatus for efficient implementation of design changes |
| 04/12/2012 | CA2813620A1 Remotely controlled apparatus for downhole applications and related methods |
| 04/12/2012 | CA2813618A1 Status indicators for use in earth-boring tools having expandable members and methods of making and using such status indicators and earth-boring tools |
| 04/12/2012 | CA2813611A1 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods |
| 04/12/2012 | CA2813610A1 Micro-jet cooling of cutting tools |
| 04/11/2012 | EP2439299A2 Method of producing a aterial containing diamond and an intermetallic compound (silicon) |
| 04/11/2012 | EP2439298A2 Method of making a aterial containing diamond and an intermetallic compound (boron) |
| 04/11/2012 | EP2438030A1 Polycrystalline diamond |
| 04/11/2012 | EP2437903A2 Methods systems and compositions for manufacturing downhole tools and downhole tool parts |
| 04/11/2012 | CN202187721U 防磨损刀排 Anti-wear knife row |
| 04/11/2012 | CN202187720U 牙轮钻头钢基复合钻齿 Cone drill steel matrix composite drilling teeth |
| 04/11/2012 | CN202187719U Core bit for creaming mud stone stratum |
| 04/11/2012 | CN202187718U 高速聚晶金刚石复合片 High-speed polycrystalline diamond compact |
| 04/11/2012 | CN202187717U 聚晶金刚石复合片 Polycrystalline diamond compact |
| 04/11/2012 | CN202187716U 牙轮钻头内置槽涂层强化钻齿 Built-in slot coating reinforced cone bit drilling teeth |
| 04/11/2012 | CN1963139B 自贯入水下开孔绞吸钻机 Since the penetration hole cutter suction underwater rig |
| 04/11/2012 | CN102414394A Cutting elements with re-processed thermally stable polycrystalline diamond cutting layers, bits incorporating the same, and methods of making the same |
| 04/11/2012 | CN102414393A Casing bit and casing reamer designs |
| 04/11/2012 | CN102409981A Assembled diamond compound sheet |
| 04/11/2012 | CN102409980A 一种刀翼式ｐｄｃ钻头 One kind of knife-wing pdc drill |
| 04/11/2012 | CN102409979A Stone-crushing drill bit |
| 04/10/2012 | US8155377 Method for determining rock physics relationships using computer tomographic images thereof |
| 04/10/2012 | US8151911 Polycrystalline diamond compact, methods of fabricating same, and rotary drill bit using same |
| 04/10/2012 | US8151906 Microtunnelling system and apparatus |
| 04/10/2012 | CA2671423C Expandable reamers for earth-boring applications and methods of using the same |
| 04/10/2012 | CA2671343C Expandable reamers for earth boring applications |
| 04/05/2012 | WO2012044973A2 Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings |
| 04/05/2012 | WO2012044888A2 Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit |
| 04/05/2012 | WO2012044568A2 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 04/05/2012 | WO2012044514A1 Wear resistant material for the shirttail outer surface of a rotary cone drill bit |
| 04/05/2012 | WO2012031108A8 Auger with butterfly flighting |
| 04/05/2012 | US20120080240 Diamond impregnated cutting structures, earth-boring drill bits and other tools including diamond impregnated cutting structures, and related methods |
| 04/05/2012 | US20120080239 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 04/05/2012 | US20120080238 Wear resistant material at the leading edge of the leg for a rotary cone drill bit |
| 04/05/2012 | US20120080237 Wear resistant material for the shirttail outer surface of a rotary cone drill bit |
| 04/05/2012 | US20120080236 Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit |
| 04/05/2012 | US20120080230 Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings |
| 04/05/2012 | US20120080229 Formation Sensing and Evaluation Drill |
| 04/05/2012 | CA2813446A1 Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings |
| 04/05/2012 | CA2812573A1 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 04/05/2012 | CA2812557A1 Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit |