| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 05/22/2013 | CN103114804A Joint seal |
| 05/21/2013 | CA2515482C Tractor with improved valve system |
| 05/16/2013 | WO2013071005A1 Reinforced directional drilling assemblies and methods of forming same |
| 05/16/2013 | WO2013070479A1 Drilling apparatus including milling devices configured to rotate at different speeds |
| 05/16/2013 | WO2013050655A9 Fuel tank |
| 05/16/2013 | WO2013038336A3 Multi-scheme downhole tool bus system and methods |
| 05/16/2013 | US20130118811 Drilling Apparatus Including Milling Devices Configured to Rotate at Different Speeds |
| 05/16/2013 | CA2855010A1 Reinforced directional drilling assemblies and methods of forming same |
| 05/15/2013 | EP2592214A1 Air pressure reused pneumatic hammer drill |
| 05/15/2013 | CN202937185U Jet flow type hydraulic hammer |
| 05/15/2013 | CN202937184U Driller without drilling rod |
| 05/15/2013 | CN202937183U Stone historical relic reinforcement lead hole drilling machine |
| 05/15/2013 | CN202937182U Large-power high-speed high-efficiency turbine drilling tool stator-and-rotor combination part |
| 05/15/2013 | CN202937181U Hydraulic oil-way system of anchor rod drilling machine |
| 05/15/2013 | CN103104193A Drilling machine without drill pipe |
| 05/15/2013 | CN103104192A Spiral hole-forming machine for cast-in-place pile |
| 05/15/2013 | CN103104191A Super-large-aperture pile foundation hole drilling machine |
| 05/15/2013 | CN103104190A Super-large-aperture pile foundation hole drilling machine |
| 05/14/2013 | US8439133 Down hole apparatus for generating a pusling action |
| 05/14/2013 | CA2669151C Variable linkage assisted gripper |
| 05/10/2013 | WO2013036516A3 Downhole motors and pumps with asymmetric lobes |
| 05/09/2013 | US20130112482 Apparatus and Process For Drilling A Borehole In A Subterranean Formation |
| 05/09/2013 | US20130112401 Downhole electrical energy conversion and generation |
| 05/08/2013 | CN202926217U Impact rotary cutting drill bit and rock cracking drilling machine using same |
| 05/08/2013 | CN202926204U Rock cracking drilling machine and rotary cutting impact drilling system thereof |
| 05/08/2013 | CN103089231A Driving system of self-elevating type ocean platform |
| 05/08/2013 | CN103089148A Control system special for down-the-hole drill carriage |
| 05/08/2013 | CN103089145A Down-hole hammer power head of rotary drilling rig and rotary drilling rig |
| 05/08/2013 | CN103089143A Pure electric hydraulic rotary drilling rig |
| 05/08/2013 | CN103088832A Annular type impact method for digging rock at bottom of drilled pile shaft |
| 05/08/2013 | CN101967955B Rotation-revolution combined down-hole hammer and construction method thereof |
| 05/08/2013 | CN101956525B Down-the-hole hammer reverse concentric casing drilling tool |
| 05/07/2013 | CA2650356C Pressurized fluid flow system for a reverse circulation hammer |
| 05/02/2013 | WO2013059878A1 Reverse circulation hammer spline arrangement improvements |
| 05/02/2013 | CA2852971A1 Reverse circulation hammer spline arrangement improvements |
| 05/01/2013 | CN202913949U Fluidic type hydro-percussive hammer for increase of drilling speed |
| 05/01/2013 | CN202913948U Fluidic type hydro-percussive hammer for increase of drilling speed |
| 05/01/2013 | CN202913947U Grid electrical drilling machine suitable for deep well drilling |
| 05/01/2013 | CN202913946U Screw drill |
| 05/01/2013 | CN103075097A Torsional impact drilling acceleration tool |
| 04/25/2013 | WO2013059327A1 Downhole tool impact dissipating tool |
| 04/25/2013 | WO2013032616A3 Downhole motors and pumps with improved stators and methods of making and using same |
| 04/25/2013 | WO2013012488A3 Downhole motors with a lubricating unit for lubricating the stator and rotor |
| 04/25/2013 | WO2013003151A3 Control of downhole safety devices |
| 04/25/2013 | US20130098689 Two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material |
| 04/25/2013 | CA2851823A1 Downhole tool impact dissipating tool |
| 04/24/2013 | CN202900039U Hole bottom hydraulic drilling tool adopting magnetic transmission technology |
| 04/24/2013 | CN202900038U Drilling-tool power unit |
| 04/24/2013 | CN103061957A Downhole motor |
| 04/24/2013 | CN103061674A Underwell oil layer driller |
| 04/24/2013 | CN103061671A Underground anti-drag twisting reducer |
| 04/24/2013 | CN101525979B Device for eliminating net torque of bit and controlling bit walk |
| 04/23/2013 | CA2711195C Progressive cavity apparatus with transducer and methods of forming and use |
| 04/18/2013 | WO2012174101A3 Corrodible downhole article and method of removing the article from downhole environment |
| 04/18/2013 | US20130092445 Bearing Assembly for Downhole Motor |
| 04/18/2013 | US20130092444 Cutting tool integrated in a drillstring |
| 04/17/2013 | CN202882755U Fluidic element press cover with split-flow device |
| 04/17/2013 | CN202882754U Upright structure used on full-sleeve full-slewing drilling machine |
| 04/17/2013 | CN103046867A Underground stepping drilling device |
| 04/17/2013 | CN102364028B Multifunctional full-hydraulic drilling machine |
| 04/11/2013 | WO2013050657A1 Pneumatic down-the-hole drill |
| 04/11/2013 | WO2013050655A1 Fuel tank |
| 04/11/2013 | US20130087386 Expandable apparatus and related methods |
| 04/11/2013 | CA2850907A1 Pneumatic down-the-hole drill |
| 04/11/2013 | CA2850905A1 Fuel tank |
| 04/10/2013 | EP2578793A2 Power transmission system for use with downhole equipment |
| 04/10/2013 | CN202866686U Rotary drilling rig and double-channel hydraulic power transmission hoisting swivel elevator thereof |
| 04/10/2013 | CN202866644U Way-type drilling unit of roller cone and DTH hammer |
| 04/10/2013 | CN202866643U Novel turbine drilling tool with long service life and large torque |
| 04/04/2013 | WO2013048559A1 Propulsion generator and method |
| 04/04/2013 | WO2013015992A3 Selective hydraulic fracturing tool and method thereof |
| 04/04/2013 | WO2013012605A3 Bearing assemblies, apparatuses, and related method of manufacture |
| 04/04/2013 | WO2013009796A3 Downhole motor with diamond-like carbon coating on stator and/or rotor |
| 04/04/2013 | WO2013006580A3 A system and method for coupling downhole tools |
| 04/04/2013 | WO2012055392A3 Direct drill bit drive for tools on the basis of a heat engine |
| 04/04/2013 | US20130081879 Downhole coring tools and methods of coring |
| 04/04/2013 | US20130081876 Optical power for self-propelled mineral mole |
| 04/03/2013 | CN202850871U Double-bit drilling device for deep frozen earth of mine |
| 04/03/2013 | CN202850856U Hydraulic down-the-hole drill |
| 04/03/2013 | CN202850855U High pressure water down-hole hammer |
| 04/03/2013 | CN103015889A Stator and rotor assembly for high-power high-speed high-efficiency turbodrills |
| 04/03/2013 | CN103015408A Cast-in-place pile synchronous casing hole-forming constructing method |
| 04/02/2013 | US8408336 Flow guide actuation |
| 04/02/2013 | US8408335 Drill string with modular motor units |
| 04/02/2013 | US8408328 Methods of controllling hydraulic motors |
| 04/02/2013 | CA2715249C Methods and apparatus for drilling directional wells by percussion method |
| 04/02/2013 | CA2658756C Technique and apparatus for drilling and completing a well in one half trip |
| 03/28/2013 | WO2013043917A1 Bearing assemblies, apparatuses, and related methods of manufacture |
| 03/28/2013 | CA2849165A1 Bearing assemblies, apparatuses, and related methods of manufacture |
| 03/27/2013 | CN202832195U Hydraulic pressurizer with long telescopic distance |
| 03/27/2013 | CN202832194U Dual-purpose type concentric simultaneous casing drilling tool |
| 03/27/2013 | CN202832187U Hydraulic breaker type rotary drilling rig |
| 03/27/2013 | CN103003514A Two-port percussion mole |
| 03/27/2013 | CN102996069A Hydraulic oil channel system for jumbolter |
| 03/26/2013 | US8403078 Methods and apparatus for wellbore construction and completion |
| 03/26/2013 | CA2514534C A downhole tool with an axial drive unit |
| 03/21/2013 | WO2013040578A2 Sealed jar |
| 03/21/2013 | WO2013038336A2 Multi-scheme downhole tool bus system and methods |
| 03/21/2013 | US20130068533 Sealed jar |
| 03/21/2013 | US20130068531 Large core sidewall coring |