| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 07/25/2012 | CN102606076A Eccentric constant-width seal groove of cone bit |
| 07/25/2012 | CN102606075A Energy-storage bearing seal ring for cone bit |
| 07/25/2012 | CN102601374A Energy-saving long-life diamond bit matrix for prospecting at depth |
| 07/25/2012 | CN101892810B Combined drill breaking rocks by cutting method |
| 07/25/2012 | CN101886522B Wheel-type drill for breaking rock in cutting mode |
| 07/25/2012 | CN101864899B Self-control shooting distance water jet drill |
| 07/25/2012 | CN101787857B Cone reamer |
| 07/25/2012 | CN101408091B Steel teeth roller bit |
| 07/24/2012 | US8225890 Impregnated bit with increased binder percentage |
| 07/24/2012 | US8225889 Drill head for rock drills |
| 07/24/2012 | US8225888 Casing shoes having drillable and non-drillable cutting elements in different regions and related methods |
| 07/24/2012 | US8225887 Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods |
| 07/24/2012 | US8225886 Earth-boring bits and other parts including cemented carbide |
| 07/24/2012 | US8225884 Rotor underreamer, section mill, casing cutter, casing scraper and drill string centralizer |
| 07/24/2012 | US8225883 Downhole percussive tool with alternating pressure differentials |
| 07/21/2012 | CA2765055A1 Downhole tool |
| 07/19/2012 | WO2012064737A3 Tools for use in subterranean boreholes having expandable members and related methods |
| 07/19/2012 | WO2012051509A3 Special curve braze sheet for top loading cutter to get better braze strength |
| 07/19/2012 | WO2012044973A3 Bearings for downhole tools, downhole tools incorporating such bearings, and methods of cooling such bearings |
| 07/19/2012 | US20120181090 Rotary drill bit including at least one superabrasive cutting element having a diamond-silicon carbide composite table |
| 07/19/2012 | US20120181088 Garden auger |
| 07/18/2012 | EP2475838A2 Polycrystalline compacts having material disposed in interstitial spaces therein, cutting elements and earth-boring tools including such compacts, and methods of forming such compacts |
| 07/18/2012 | EP2475837A2 Drill bit with rate of penetration sensor |
| 07/18/2012 | EP2475836A2 Earth boring bit with dlc coated bearing and seal |
| 07/18/2012 | CN202338206U Five-blade steel body PDC (Polycrystalline Diamond Compact) drill bit |
| 07/18/2012 | CN202338205U 一种新型pdc钻头 A new pdc drill |
| 07/18/2012 | CN202338204U 砂礓土专用定向螺旋钻头 Sand Jiang special orientation soil auger |
| 07/18/2012 | CN202338203U Open-hole cave-making tool |
| 07/18/2012 | CN202338200U 用于工程钻机的捆绑式冲击器 Rig for bundled impactor |
| 07/18/2012 | CN202337976U 潜孔冲击高压旋喷注浆设备 DTH hammer high pressure jet grouting equipment |
| 07/18/2012 | CN102587855A Core drill suitable for breakable and weak formation |
| 07/18/2012 | CN102587841A Flushing drill bit |
| 07/18/2012 | CN102587840A Hard stratum casing windowing drill bit |
| 07/18/2012 | CN102587839A Polycrystalline diamond compact drill bit |
| 07/18/2012 | CN102587838A Manufacturing method of hot-press polymerized coarse-grain diamond drill bit |
| 07/18/2012 | CN102587837A Labial surface shape of diamond-impregnated drill |
| 07/18/2012 | CN102587836A Two-way reamer |
| 07/18/2012 | CN102587835A Double sealing system for roller bit bearings |
| 07/18/2012 | CN102587834A Drilling tool and piling machinery |
| 07/18/2012 | CN102586843A Manufacturing method for long life electroplated diamond bit |
| 07/18/2012 | CN101522930B Articles having improved resistance to thermal cracking |
| 07/18/2012 | CN101519959B Drilling touching shocking integrative prospecting instrument and use method thereof |
| 07/18/2012 | CN101321925B Cutting rod, cutting bit and cutting tool |
| 07/17/2012 | US8220567 Impregnated bit with improved grit protrusion |
| 07/17/2012 | US8220566 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools |
| 07/17/2012 | CA2548962C Method and apparatus for directional drilling |
| 07/12/2012 | WO2012094676A2 Apparatus and method for supplying electrical power to an electrocrushing drill |
| 07/12/2012 | WO2012058045A3 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 07/12/2012 | WO2012050959A3 Downhole reamer asymmetric cutting structures |
| 07/11/2012 | EP2473699A2 A multifunctional screw drill and reaming device |
| 07/11/2012 | EP2473698A1 A drill bit assembly for fluid-operated percussion drill tools |
| 07/11/2012 | EP2099944B1 Method of making a material containing diamond and an intermetallic compound |
| 07/11/2012 | CN202325250U Plastic stratum well-drilling drilling tool structure |
| 07/11/2012 | CN202325249U 金刚石复合片 PDC |
| 07/11/2012 | CN202325248U 一种长螺旋加强型钻头 A long-enhanced spiral drill |
| 07/11/2012 | CN202325247U 带有滑槽的螺纹式钻头 Threaded drill with chutes |
| 07/11/2012 | CN202325246U 一种定向pdc钻头 As a directional drill pdc |
| 07/11/2012 | CN202325245U 滑块式对心扩孔钻具 Sliding on the heart reaming drill |
| 07/11/2012 | CN202325244U 一种凿进钻头 One kind of chisel into the drill |
| 07/11/2012 | CN202325243U Drill bit |
| 07/11/2012 | CN202325242U 模块式多用途无磁导向钻头 Modular multi-purpose non-magnetic drill guide |
| 07/11/2012 | CN202325241U 大通孔开闭式全方位钻进钻头 Chase retractable round hole drilling drill |
| 07/11/2012 | CN1938497B Drilling apparatus, method, and system |
| 07/11/2012 | CN102575499A Hard metal insert for a drill bit for percussion drilling and method for grinding a hard metal insert |
| 07/11/2012 | CN102561953A Self-adapting hybrid bit |
| 07/11/2012 | CN102561952A Large-through-hole opening type all-dimensional drilling bit and sieve tube lowering method thereof |
| 07/11/2012 | CN102561951A Double-stage and double-speed well drilling tool |
| 07/11/2012 | CN102561950A Process for realizing grouting consolidation for aggregates filled in cavities of strata and jetting drill bit |
| 07/11/2012 | CN102561949A Attachment type automatic water feeder for hydraulic drill |
| 07/11/2012 | CN102561432A Deep sand dredging device from earth surface of continental riverway |
| 07/11/2012 | CN102561311A Multifunctional high-pressure rotary ejecting step-reaming bit |
| 07/11/2012 | CN102561267A Unidirectional high-pressure impact extrusion grouting nozzle |
| 07/11/2012 | CN101636551B Device or actuating a bottom tool |
| 07/10/2012 | US8215420 Thermally stable pointed diamond with increased impact resistance |
| 07/10/2012 | US8215418 Expandable reamer apparatus and related methods |
| 07/10/2012 | CA2683705C Morphible bit |
| 07/05/2012 | WO2012092042A1 Drill bits, cutting elements for drill bits, and drilling apparatuses including the same |
| 07/05/2012 | WO2012089142A1 Combined one cone bit |
| 07/05/2012 | WO2012044568A3 Cutting elements, earth-boring tools incorporating such cutting elements, and methods of forming such cutting elements |
| 07/05/2012 | WO2012033741A3 Apparatus and system to allow tool passage ahead of a bit |
| 07/05/2012 | US20120168232 Localized features and manufacturing methods for inserts of rock bits |
| 07/05/2012 | US20120168231 Drill bits with bearing elements for reducing exposure of cutters |
| 07/05/2012 | US20120168229 Expandable downhole tool apparatus |
| 07/05/2012 | US20120168228 Apparatus and methods for drilling a wellbore using casing |
| 07/05/2012 | US20120168177 Apparatus and Method for Supplying Electrical Power to an Electrocrushing Drill |
| 07/05/2012 | CA2822817A1 Drill bits, cutting elements for drill bits, and drilling apparatuses including the same |
| 07/04/2012 | EP2470743A2 Synergic surface modification for bearing seal |
| 07/04/2012 | CN202300234U 组合式钻具 Combined drill |
| 07/04/2012 | CN202300218U 一种扩孔式预应力锚索钻头装置 One kind of prestressed anchor reaming drill bit device |
| 07/04/2012 | CN202300207U 一种新型可换刀翼扩孔器 A new wing of the reamer may ATC |
| 07/04/2012 | CN202300206U 一种水泥土双向搅拌桩用钻头的注水气喷嘴 A cement mixing pile of soil with a bit bi-directional gas injection nozzle |
| 07/04/2012 | CN202300205U 加强型金刚石复合全片锚杆钻头 Reinforced composite whole sheet anchor diamond drill |
| 07/04/2012 | CN202300204U 旋挖钻机用金刚石钻头 Rotary drilling rig with a diamond drill bit |
| 07/04/2012 | CN202300203U Drill bit for nail-shaped two-way soil cement mixing pile forming machine |
| 07/04/2012 | CN202300202U 自导向水压切换割缝式扩孔钻头 Self-steering pressure switch slotted type reaming drill |
| 07/04/2012 | CN202300201U 一种组合钻头 A combination drill |
| 07/04/2012 | CN1664300B Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals |
| 07/04/2012 | CN102549230A Cutting tool inserts |
| 07/04/2012 | CN102536131A Ground drill buffering mechanism |
| 07/04/2012 | CN102536125A Drill-bit structure capable of providing cutting power by fluid jet, and implementation method thereof |