| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 07/30/2009 | US20090188723 Pressurized fluid flow system for a reverse circulation hammer |
| 07/29/2009 | EP2083145A2 Pressurized fluid flow system for a reverse circulation hammer |
| 07/29/2009 | EP1649128B1 Device for drilling a bore in the ground |
| 07/29/2009 | CN101492997A Hydraulic down-the-hole rock drilling impactor |
| 07/28/2009 | US7566235 Electrical connection assembly |
| 07/28/2009 | CA2650356A1 Pressurized fluid flow system for a reverse circulation hammer |
| 07/23/2009 | WO2009048774A3 Downhole motor assembly with torque regulation |
| 07/23/2009 | US20090183921 Flow operated orienter |
| 07/23/2009 | US20090183920 Downhole Percussive Tool with Alternating Pressure Differentials |
| 07/23/2009 | US20090183919 Downhole Percussive Tool with Alternating Pressure Differentials |
| 07/22/2009 | CN201276969Y Rotor and stator of turbine power drill |
| 07/21/2009 | US7562726 Device for drilling a bore in the ground |
| 07/16/2009 | WO2009088769A2 Vibratory unit for drilling systems |
| 07/16/2009 | CA2711220A1 Vibratory unit for drilling systems |
| 07/16/2009 | CA2711195A1 Progressive cavity apparatus with transducer and methods of forming and use |
| 07/15/2009 | EP2078820A2 Coiled tubing wellbore drilling and surveying using a through the drill bit apparatus |
| 07/15/2009 | EP2078131A1 Air actuated down- the -hole hammer and drill bit and foot valve for use in the hammer |
| 07/15/2009 | EP2032838A4 Impulse rotor generator |
| 07/15/2009 | CN201273138Y Reversing speed variator |
| 07/15/2009 | CN201273137Y Novel downhole air hammer |
| 07/15/2009 | CN201273136Y Drill-elevating back-flushing apparatus |
| 07/15/2009 | CN101484657A Excavator for underground excavating, rotary excavator and underground excavating method |
| 07/09/2009 | WO2009086280A2 Reamer with improved hydraulics for use in a wellbore |
| 07/09/2009 | WO2009065523A3 Self-circulating drill bit |
| 07/09/2009 | US20090173542 Vibratory unit for drilling systems |
| 07/08/2009 | EP1792052A4 Integrated magnetic ranging tool |
| 07/07/2009 | US7555854 Earth auger head and excavation method |
| 07/02/2009 | WO2009082453A2 Pulse rate of penetration enhancement device and method |
| 07/02/2009 | US20090166026 Jar device for use in coil tubing drilling |
| 07/02/2009 | CA2710281A1 Pulse rate of penetration enhancement device and method |
| 07/01/2009 | CN100507203C Bi-directional thruster pig apparatus and method of utilizing same |
| 06/30/2009 | CA2457426C Acoustical telemetry |
| 06/30/2009 | CA2380219C Lockable motor assembly for use in a well bore |
| 06/25/2009 | US20090159281 Running bore-lining tubulars |
| 06/23/2009 | US7549487 Mandrel and bearing assembly for downhole drilling motor |
| 06/23/2009 | US7549467 Wellbore motor having magnetic gear drive |
| 06/18/2009 | WO2009047552A3 Shaft seal for down-hole tools |
| 06/18/2009 | US20090152009 Nano particle reinforced polymer element for stator and rotor assembly |
| 06/18/2009 | DE102007050048B4 Turbine zur Energieerzeugung in einem Bohrstrang Turbine for power generation in a drill string |
| 06/17/2009 | EP2069602A1 Percussion device and rock drilling machine |
| 06/11/2009 | WO2009073341A2 Apparatus and method for a hydraulic diaphragm downhole mud motor |
| 06/11/2009 | CA2707077A1 Apparatus and method for a hydraulic diaphragm downhole mud motor |
| 06/09/2009 | CA2496714C Elastic polymeric material with securing means for application to an article |
| 06/04/2009 | WO2009068316A1 System and method for drilling lateral boreholes |
| 06/04/2009 | WO2009047729A3 Downhole load sharing motor assembly |
| 06/04/2009 | US20090139769 Apparatus and method for a hydraulic diaphragm downhole mud motor |
| 06/03/2009 | EP2065553A1 System and method for drilling lateral boreholes |
| 06/03/2009 | CN100494615C Non-excavation underground pipeline tunnel wall tension propulsion machine |
| 06/03/2009 | CN100494613C Submerged hole driller component element |
| 05/28/2009 | WO2009067468A1 Drilling system |
| 05/28/2009 | WO2009065536A1 Downhole drilling system |
| 05/28/2009 | WO2009065523A2 Self-circulating drill bit |
| 05/28/2009 | US20090133929 Method, Drilling Machine, Drill bit and Bottom Hole Assembly for Drilling by Electrical Discharge by Electrical Discharge Pulses |
| 05/28/2009 | US20090133867 Drillstring alternator |
| 05/28/2009 | CA2706590A1 Drilling system |
| 05/27/2009 | CN101443526A Directional control drilling system |
| 05/27/2009 | CN101440693A High temperature deep well screw drilling tool |
| 05/26/2009 | CA2426544C Percussive down-the-hole hammer for rock drilling, and a drill bit used therein |
| 05/22/2009 | WO2009062726A1 Methods for cuttings removal for a wireline drilling tool |
| 05/22/2009 | WO2009062718A2 Anchoring systems for drilling tools |
| 05/20/2009 | CN201241613Y Down-hole drill drive speed reducing mechanism |
| 05/20/2009 | CN201241612Y Nano ceramic screw drilling tool |
| 05/20/2009 | CN101438025A Bit face orientation control in drilling operations |
| 05/12/2009 | CA2312589C Drilling motor that operates pursuant to the moineau principle for drilling deep holes |
| 04/30/2009 | WO2007064591A3 Wellbore motor having magnetic gear drive |
| 04/29/2009 | CN201228754Y Downhole small teeth difference external tooth output decelerator |
| 04/29/2009 | CN101418670A High wind pressure pneumatic double-gear turning machine |
| 04/28/2009 | US7523793 Drilling head with protective screen |
| 04/28/2009 | US7523792 Method and apparatus for shifting speeds in a fluid-actuated motor |
| 04/23/2009 | DE102007050048A1 Turbine zur Energieerzeugung in einem Bohrstrang Turbine for power generation in a drill string |
| 04/22/2009 | CN201225089Y Hydrodynamic force motor type hard rock deep borehole drilling device |
| 04/22/2009 | CN101413377A Flow injection type impacter abrasion-proof inner casing cylinder and piston |
| 04/16/2009 | WO2009048774A2 Downhole motor assembly with torque regulation |
| 04/16/2009 | WO2009047729A2 Downhole load sharing motor assembly |
| 04/16/2009 | US20090095498 Percussive Device for a Rock Drilling Machine, Method for Achieving a Reciprocating Piston Movement and Rock Drilling Machine |
| 04/16/2009 | CA2702538A1 Downhole load sharing motor assembly |
| 04/16/2009 | CA2701474A1 Downhole motor assembly with torque regulation |
| 04/15/2009 | CN201221311Y Hydraulic drilling and expanding integrated machine |
| 04/08/2009 | CN101405472A Seal assembly for use in a top drive |
| 04/01/2009 | EP2041390A1 Mechanical trigger arrangement |
| 03/31/2009 | US7510031 Directional drilling control |
| 03/26/2009 | US20090078466 Apparatus and Method for Driving Casing or Conductor Pipe |
| 03/25/2009 | EP2039878A1 Subsea lateral drilling |
| 03/25/2009 | EP2038504A1 Selective agitation of downhole apparatus |
| 03/25/2009 | CN100472031C System and method for transmitting electric power into a bore |
| 03/19/2009 | WO2008148613A4 Power transmission system for use with downhole equipment |
| 03/19/2009 | US20090071674 Drilling implement and method for operating a drilling implement |
| 03/17/2009 | US7504752 Electric motors for powering downhole tools |
| 03/17/2009 | US7503409 Earth drilling rig having electronically controlled air compressor |
| 03/12/2009 | US20090068037 Hermetically Sealed Motor Lead Tube |
| 03/11/2009 | EP2032838A1 Impulse rotor generator |
| 03/10/2009 | US7500787 Bearing assembly for downhole mud motor |
| 03/05/2009 | WO2009028964A1 Magnetic hammer |
| 03/05/2009 | US20090058221 System and method for protecting submersible motor winding |
| 03/05/2009 | US20090057016 Downhole Turbine |
| 03/05/2009 | CA2692769A1 Magnetic hammer |
| 03/04/2009 | EP2029851A1 Mud shaft for the drill string of a rotary percussive drilling rig, impact stack for a mud shaft and rotary percussive drilling rig |
| 03/04/2009 | EP2029325A2 Delayed compression sleeve hammer |
| 02/26/2009 | WO2009026449A1 Excavation apparatuses and methods |
| 02/26/2009 | WO2009023930A1 Down-hole hammer drill |