| Patents for E21B 11 - Other drilling tools (454) |
|---|
| 03/04/2015 | EP2841682A1 Mechanical roughneck positioner |
| 02/26/2015 | WO2015026532A1 Tool bit for cutting an object |
| 02/19/2015 | WO2015022458A1 Process and unit for pumping flammable products capable of forming an explosive atmosphere |
| 02/05/2015 | US20150034393 Hole-vac |
| 01/29/2015 | US20150027780 One Trip Drill and Casing Scrape Method and Apparatus |
| 01/07/2015 | CN104265164A 高原山地基坑开挖施工设备的钻进掏挖提土装置 Plateaus of excavation and drilling equipment mention digging soil device |
| 01/07/2015 | CN104265156A 高原山地基坑开挖施工设备的掏挖提土装置 Plateaus excavation construction equipment digging mention soil device |
| 11/11/2014 | US8881609 Percussive driving apparatus for environmental sampling or test device |
| 10/09/2014 | US20140300120 Shovel device |
| 10/07/2014 | US8854045 Electronics for a thin bed array induction logging system |
| 09/25/2014 | WO2014149173A1 Ram accelerator system |
| 08/12/2014 | US8800654 Wellbore machining device |
| 08/06/2014 | CN103967426A 便于钻井的石油空心钻杆 To facilitate the drilling of oil hollow drill |
| 08/05/2014 | US8794349 Power-driven hand-held tool |
| 07/30/2014 | CN203742462U 一种涡轮钻具装置 A turbine drill device |
| 07/09/2014 | CN203701992U 全断面钻具和旋挖钻机 Full section drilling and rotary drilling rig |
| 07/09/2014 | CN203701943U 全断面钻具和旋挖钻机 Full section drilling and rotary drilling rig |
| 07/09/2014 | CN102777122B 一种冲击式螺杆钻具 An impact screw drill |
| 05/14/2014 | CN203594369U 锚杆回收钻具 Bolt recovered drill |
| 05/07/2014 | CN203584298U 用于软煤岩钻进双通道多孔紊流卸压钻具 For soft coal and rock drilling Dual porous turbulent relief drill |
| 04/16/2014 | CN203547551U Hole boring device |
| 04/02/2014 | CN203515336U Hydraulic bucket for all-casing drilling machine |
| 02/05/2014 | CN103556940A Dual-channel porous turbulence pressure relief drilling tool for soft coal rock drilling, and construction method of drilling tool |
| 01/21/2014 | US8631881 Inserting and extracting underground sensors |
| 12/11/2013 | CN203334967U Reaction torque braking shield |
| 12/04/2013 | CN203321333U Modularized and combined cutter head and raise boring machine comprising same |
| 11/14/2013 | WO2013168189A1 Drilling system for the excavation of a well and/or for the realisation in the underground of one or more slots to be used as radiant surfaces for the exploitation of the geothermal energy |
| 11/13/2013 | CN103388451A Ultrahigh-temperature screw drill |
| 10/31/2013 | WO2013159187A1 Mechanical roughneck positioner |
| 10/30/2013 | CN103375136A Downhole hydraulic cutting saw of pile driver |
| 10/01/2013 | US8545130 Wick assembly and method for installing an underdrain |
| 09/25/2013 | CN103324973A Petroleum drilling tool built-in chip identification structure |
| 07/24/2013 | CN203081309U Drill clamping device capable of clamping drills of different diameters |
| 06/05/2013 | CN202970491U Drill stem special for mine |
| 05/08/2013 | DE112011102419T5 Bohrlochwerkzeug mit nanopartikelverstärkter Metallbeschichtung Downhole tool with nanoparticle-enhanced metal coating |
| 05/08/2013 | CN202926244U Guide screw drilling tool with rotatable centralizer |
| 03/13/2013 | CN202788622U Horizontal directional drilling power broaching drilling tool provided with automatic resetting pressure relief device |
| 03/07/2013 | WO2012170299A3 Method and system for abandoning a borehole |
| 03/06/2013 | CN202767893U 开孔管 Opening the tube |
| 02/27/2013 | EP2561172A2 Method for forming slots in a wellbore casing |
| 02/27/2013 | CN202756380U Small conical degree double circular bead thread structure |
| 02/20/2013 | CN202745686U Impact screw drilling tool |
| 02/15/2013 | DE202013000488U1 Erdlochbohrvorrichtung Erdlochbohrvorrichtung |
| 01/31/2013 | WO2012129029A4 Multiple liner hanger assembly |
| 01/30/2013 | CN202706931U Drilled pile construction drilling tool with stone fetching function |
| 01/30/2013 | CN102900373A Counter puller |
| 12/27/2012 | WO2012125619A3 Hydro-mechanical downhole tool |
| 12/13/2012 | WO2012170299A2 Method and system for abandoning a borehole |
| 12/06/2012 | US20120305318 Forming oriented fissures in a subterranean target zone |
| 12/05/2012 | CN202578494U Screw rod drilling tool with automatic cooling function |
| 12/05/2012 | CN202578493U Ultra-temperature screw drilling tool |
| 11/28/2012 | CN202560108U Hole-bottom hydraulic cutting saw of ram machine |
| 11/22/2012 | WO2012129029A3 Multiple liner hanger assembly |
| 11/21/2012 | CN202548881U Identification structure of petroleum drilling tool built-in chip |
| 11/21/2012 | CN202544754U Screw drilling tool |
| 11/14/2012 | CN202531042U Bottom drilling tool combined structure used for coiled tubing drilling or boring <0} |
| 11/14/2012 | CN102777122A Impact screw drilling tool |
| 10/03/2012 | CN102704858A Drilling rig with stone dragging function for drilled pile construction |
| 09/27/2012 | WO2012129029A2 Multiple liner hanger assembly |
| 09/26/2012 | CN202450422U Cutter clamper |
| 09/20/2012 | WO2012125619A2 Hydro-mechanical downhole tool |
| 09/20/2012 | US20120234601 Bit breaker |
| 09/05/2012 | CN102654035A Bottom drilling tool combination structure for coiled tubing drilling or drilling |
| 08/29/2012 | CN202401967U Gauge protection guide and drill with same |
| 08/15/2012 | EP2487322A1 Moling apparatus |
| 08/01/2012 | CN202360032U Mine refuge monitoring and communication system |
| 07/11/2012 | CN202325251U 止回防堵螺杆钻具 Check attempts to prevent the screw hole |
| 07/10/2012 | CA2464884C Post hole digger |
| 06/28/2012 | US20120160571 Drilling tool |
| 06/21/2012 | WO2012080690A1 Hand tool for forming a hole in the ground surface |
| 06/19/2012 | US8201642 Drilling assemblies including one of a counter rotating drill bit and a counter rotating reamer, methods of drilling, and methods of forming drilling assemblies |
| 05/18/2012 | CA2758705A1 Post hole digger with integrated safety features |
| 04/11/2012 | CN102409982A 止回防堵螺杆钻具 Backstop attempts to prevent the screw hole |
| 03/01/2012 | WO2011148315A3 Method for forming slots in a wellbore casing |
| 01/26/2012 | WO2012012636A1 Well tool having a nanoparticle reinforced metallic coating |
| 01/26/2012 | CA2806219A1 Well tool having a nanoparticle reinforced metallic coating |
| 01/11/2012 | CN202108413U Crushing mechanism |
| 12/13/2011 | CA2601611C Percussion adapter for positive displacement motors |
| 12/01/2011 | WO2011148315A2 Method for forming slots in a wellbore casing |
| 12/01/2011 | CA2798839A1 Method for forming slots in a wellbore casing |
| 11/30/2011 | CN202055759U 防渗墙工程小墙施工用重锤 Cut-off wall construction project with a small wall hammer |
| 11/02/2011 | EP2383419A2 Device for inserting a standing pipe assembly into the soil |
| 10/20/2011 | US20110253450 Cutting device for producing vertically running trenches in the ground |
| 10/12/2011 | EP2373866A1 Trenchless ducting apparatus frame |
| 08/17/2011 | EP2132403B1 Drilling head for reboring a stuck valve |
| 08/17/2011 | CN101657603B Drilling head for reborinq a stuck valve |
| 07/13/2011 | CN201896577U Wire pole pit boring machine |
| 07/12/2011 | US7975771 Method for running casing while drilling system |
| 07/07/2011 | US20110162887 Inserting and extracting underground sensors |
| 04/27/2011 | EP2314825A1 Drilling head for reboring a stuck valve |
| 04/27/2011 | CN201810207U Rotary excavation drilling machine and rotary excavation drilling tool thereof |
| 04/26/2011 | US7931423 Drainage element |
| 03/22/2011 | CA2522019C Nutating single cone drill bit |
| 02/02/2011 | CN101963045A Slag salvaging drill of slurry roller bit and slag salvaging basket |
| 12/29/2010 | WO2010150185A1 Muffler for pneumatic rock drill |
| 12/07/2010 | US7845431 Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations |
| 12/02/2010 | US20100300752 Method and apparatus for penetrating particulate substrates |
| 11/24/2010 | EP2252768A2 Nano particle reinforced polymer element for a stator and rotor assembly |
| 11/23/2010 | US7836972 Mobile soil sampling device with vacuum collector |
| 11/02/2010 | US7823659 Apparatus and methods for drilling and lining a wellbore |