Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 4 - Drives for drilling, used in the borehole
Patents for E21B 4 - Drives for drilling, used in the borehole (6,032)
11/2010
11/11/2010WO2010091348A3 Downhole apparatus with a wireless data communication device between rotating and non-rotating members
11/11/2010US20100282509 Variable frequency control for down hole drill
11/10/2010EP2247814A1 A horizontal directional drilling system
11/10/2010CN201627533U Novel transmission shaft assembly suitable for screw drill
11/04/2010WO2008157428A3 Electrically powered tractor
11/04/2010US20100276204 Vibrating tool
11/03/2010EP2246518A2 Impact device for earth drilling work
11/03/2010EP2245255A1 Method and device for manufacturing a down hole motor radial bearing
11/03/2010EP0951611B2 Wellbore tractor
11/03/2010CN201620757U Valveless single-cylinder high-efficiency down-the-hole hammer
11/03/2010CN201620756U Transmission shaft assembly of screw drilling rig capable of automatically compensating end play
11/03/2010CN1766276B DTH hammer double-tube drilling equipment and drilling method thereof
10/2010
10/28/2010WO2010123375A1 Stroker device
10/28/2010WO2010102275A3 Apparatus for electrical power and/or data transfer between rotating components in a drill string
10/28/2010DE102009017515A1 Rammvorrichtung für Erdbohrabreiten Ram device for Erdbohrabreiten
10/28/2010CA2759539A1 Stroker device
10/21/2010WO2010120207A1 Oil protection system for a downhole motor
10/21/2010WO2010098951A3 Bearing apparatuses, systems including same, and related methods
10/21/2010US20100263933 Directional drilling control using modulated bit rotation
10/20/2010EP2136962B1 Long reach spindle drive systems and method
10/20/2010EP2032838B1 Impulse rotor generator
10/20/2010CN101864907A Vibration damper and downhole drill comprising the same
10/20/2010CN101864895A Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe
10/20/2010CN101864894A Chuck assembly for a down-hole drill
10/20/2010CN101864893A Screw rod drilling tool
10/19/2010US7814995 Hydraulic jar and an overpressure relief mechanism therefor
10/19/2010US7814993 Downhole power generator and method
10/14/2010WO2010061168A3 Valve-controlled downhole motor
10/14/2010DE112008003250T5 Anordnung und Verfahren für einen Hydraulik-Bohrloch-Schlammmotor mit Membran Apparatus and method for a hydraulic downhole mud motor with membrane
10/13/2010EP2238352A2 Progressive cavity apparatus with transducer and methods of forming and use
10/13/2010CN201605995U 全液压坑道钻机的分体式动力旋进装置 Split power hydraulic drilling rig precession device
10/13/2010CN101027456B Bottom drill combination
10/12/2010US7810584 Method of directional drilling with steerable drilling motor
10/12/2010CA2630108C Electro-mechanical thruster
10/12/2010CA2493552C Device for simultaneously casing a hole while drilling
10/08/2010CA2699122A1 Impactor excavation system having a drill bit discharging in a cross-over pattern
10/07/2010WO2009062716A3 Measurements while drilling or coring using a wireline drilling machine
10/07/2010US20100252294 Handle portion of hand-held electric tool
10/06/2010EP2235323A2 Pulse rate of penetration enhancement device and method
10/06/2010CN201601570U 一种轻便的气动锚杆钻机马达 A lightweight pneumatic bolt rig motor
10/06/2010CN201598980U 全液压钻孔挖掘多用机 Full hydraulic drilling mining multi-purpose machine
10/05/2010CA2486277C Down-hole vane motor
09/2010
09/30/2010WO2010017367A3 Percussion assisted rotary earth bit and method of operating the same
09/30/2010US20100243264 Multiphase Conductor Shoe For Use With Electrical Submersible Pump
09/29/2010EP2231989A2 Vibratory unit for drilling systems
09/28/2010US7802638 Drive system
09/23/2010WO2010107606A2 System and method for directional boring including continuous reverse rotation
09/23/2010US20100236832 Percussive drill bit provided with an improved chuck assembly
09/22/2010EP2229497A1 Drilling system
09/22/2010CN201588540U Large-bore separated arm type diving drill
09/22/2010CN201588536U Shearing-type down-the-hole drill
09/22/2010CN201588535U Hydraulic cylinder of oil hydraulic drilling machine
09/22/2010CN201588534U Sealing transmission shaft for screw drilling tool
09/22/2010CN201588533U Hydraulic top portion driving oil drilling machine electric liquid complete device
09/22/2010CN201588531U Integrated rotary head for drilling machine
09/21/2010CA2537866C Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole
09/16/2010WO2010104915A1 Bearing assembly for a downhole motor
09/16/2010CA2792463A1 A borehole cutting assembly for directional cutting
09/16/2010CA2755220A1 Bearing assembly for a downhole motor
09/16/2010CA2754732A1 Percussion mole
09/15/2010CN201581803U Single eccentric following pipe drilling tool
09/10/2010WO2010102275A2 Apparatus for electrical power and/or data transfer between rotating components in a drill string
09/10/2010WO2010063999A3 Drill string with modular motor units
09/09/2010US20100224413 Method of Selecting a Drilling Motor for a Casing Drill String
09/08/2010CN101824964A Downhole drill of intelligent underground multi-branch horizontal drilling completion system
09/08/2010CN101824961A Multifunctional motive power head of full hydraulic drilling machine
09/07/2010US7789201 Gear unit and method for controlling an internal pressure in the gear unit
09/07/2010CA2413374C Drilling turbine
09/02/2010WO2010098951A2 Bearing apparatuses, systems including same, and related methods
09/02/2010US20100218995 Bearing apparatuses, systems including same, and related methods
09/02/2010CA2752103A1 Bearing apparatuses, systems including same, and related methods
09/01/2010CN201567954U Sleeve valve downhole pneumatic impacter
09/01/2010CN201567953U Open-air down-hole driller
09/01/2010CN201567952U Motive power head of hole drilling pile machine
09/01/2010CN201567951U Down-the-hole drill machine sliding frame compensation mechanism
09/01/2010CN101821471A Magnetic hammer
08/2010
08/31/2010US7785012 Bearing arrangement
08/31/2010US7784548 Smart compressed chamber well optimization system
08/26/2010WO2010096039A1 Coated oil and gas well production devices
08/26/2010US20100212967 Magnetic hammer
08/26/2010US20100212966 Downhole Tool Actuation
08/26/2010US20100212965 Downhole Tool Actuation
08/26/2010US20100212901 Downhole vibration apparatus and methods
08/26/2010US20100212887 Gripper assembly for downhole tools
08/26/2010CA2752759A1 Coated oil and gas well production devices
08/25/2010EP1792052B1 Integrated magnetic ranging tool
08/25/2010CN201560742U Check valve for drill bit of downhole drill hammer
08/25/2010CN201560705U Down-the-hole drill and connector thereof
08/19/2010WO2010093685A2 Down hole hammer having elevated exhaust
08/19/2010US20100206554 Power transmission system for use with downhole equipment
08/19/2010CA2752108A1 Down hole hammer having elevated exhaust
08/18/2010CN201554367U Power device for pneumatic hammer, pneumatic pickax, or other rock drill tools
08/18/2010CN201554366U Safety environment-friendly type down-the-hole hammer rock driller
08/18/2010CN201554364U Drilling equipment with double power heads
08/18/2010CN101806209A Intelligent control device for deep hole drill carriage
08/17/2010CA2469886C A percussive downhole hammer and piston design for such a hammer
08/17/2010CA2387881C Method and apparatus for operations in underground subsea oil and gas wells
08/12/2010WO2010091348A2 Downhole apparatus with a wireless data communication device between rotating and non-rotating members
08/12/2010WO2010090577A1 Arrangement for a down-the-hole hammer drill for use in soil consolidation through jet grouting
08/12/2010WO2010053968A3 Downhole mud motor and method of improving durability thereof
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