| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
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| 03/05/2015 | WO2015030778A1 Downhole drilling motor |
| 03/05/2015 | WO2015030776A1 Downhole adjustable bent motor |
| 03/05/2015 | US20150060144 Turbine blade for turbodrills |
| 03/05/2015 | US20150060143 Remotely controlled apparatus for downhole applications and methods of operation |
| 03/05/2015 | US20150060141 Downhole motor sensing assembly and method of using same |
| 03/05/2015 | US20150060139 Two-Port Percussion Mole |
| 03/04/2015 | EP2841675A1 Downhole motor with concentric rotary drive system |
| 03/04/2015 | EP2841674A2 Downhole motor with concentric rotary drive system |
| 03/03/2015 | US8967863 Bearings, bearing apparatus, and systems including the same |
| 03/03/2015 | US8967299 Downhole motor |
| 02/26/2015 | WO2015026374A1 Anti-stall mechanism |
| 02/26/2015 | WO2015026311A1 Method to optimize drilling efficiency while reducing stick slip |
| 02/26/2015 | US20150053485 Wired or Ported Transmission Shaft and Universal Joints for Downhole Drilling Motor |
| 02/25/2015 | EP2840225A2 Wired or ported transmission shaft and universal joints for downhole drilling motor |
| 02/25/2015 | EP2839102A1 Drilling assembly with high-speed motor gear system |
| 02/24/2015 | US8960331 Wired or ported universal joint for downhole drilling motor |
| 02/24/2015 | CA2750810C Down-the-hole drill reverse exhaust system |
| 02/19/2015 | WO2015023904A1 Axial oscillation device |
| 02/19/2015 | US20150048705 Magnetic drive devices, and related systems and methods |
| 02/19/2015 | DE102013214736A1 Bohrlochanordnung mit Magnetkupplung und Druckausgleich The downhole assembly with magnetic clutch and pressure compensation |
| 02/17/2015 | US8955619 Managed pressure drilling |
| 02/17/2015 | US8955613 Pneumatic impact tool |
| 02/17/2015 | CA2729161C Downhole power generator and method |
| 02/12/2015 | US20150043849 Thermal management bearing assemblies, apparatuses, and motor assemblies using the same |
| 02/12/2015 | US20150041219 Housing, Mandrel and Bearing Assembly Positionable in a Wellbore |
| 02/12/2015 | US20150041137 Automatic driller |
| 02/11/2015 | EP2834456A1 Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
| 02/11/2015 | EP2834443A1 Apparatus for drilling and lining a borehole |
| 02/11/2015 | CN204152424U 一种井下螺杆钻具 A downhole screw drill |
| 02/11/2015 | CN104343385A 液动冲击器 Hydraulic impactor |
| 02/10/2015 | US8950517 Drill bit with a retained jack element |
| 02/10/2015 | US8950476 Coiled tubing deployed ESP |
| 02/05/2015 | WO2015016937A1 Downhole power delivery tool powered by hydrostatic pressure |
| 02/04/2015 | EP2831428A1 Valve |
| 02/04/2015 | EP2831359A1 Bearing assemblies, apparatuses, and motor assemblies using the same |
| 02/04/2015 | CN204140257U 点投影楔子形叶片制动级定转子组合件 Point Projection wedge-shaped blade brake rotor assembly level |
| 02/04/2015 | CN204139965U 可分组启动的多轴钻机 Start of multi-axis drilling rig can be grouped |
| 02/04/2015 | CN204139964U 一种螺杆钻具传动轴总成 A screw drill shaft assembly |
| 02/04/2015 | CN204139963U 一种螺杆钻具传动轴总成的防掉机构 A screw drill shaft assembly of anti-out mechanism |
| 02/04/2015 | CN204139962U 一种螺杆钻具传动轴总成 A screw drill shaft assembly |
| 02/04/2015 | CN104334817A 具有高速马达齿轮系统的钻井组件 With a drilling assembly speed motor gear system |
| 02/04/2015 | CN103104191B 超大孔径桩基钻孔机 Large aperture pile drilling machine |
| 02/03/2015 | US8944185 Systems and methods to reduce oscillations in magnetic couplings |
| 02/03/2015 | US8944161 Gripper assembly for downhole tools |
| 01/31/2015 | CA2858023A1 Downhole motor coupling systems and methods |
| 01/29/2015 | WO2015013029A1 Electrical power storage for downhole tools |
| 01/29/2015 | WO2015013028A1 Selective electrical activation of downhole tools |
| 01/29/2015 | WO2015012976A1 Apparatus and methods for performing downhole operations using a selectably operable motor |
| 01/29/2015 | US20150027782 Mud hydraulic top drive |
| 01/28/2015 | CN204125934U 潜孔锤全护筒跟管钻进的管靴结构 DTH Drilling with Casing whole tube boots structure |
| 01/28/2015 | CN104321500A 高温超级电容器 High temperature supercapacitors |
| 01/28/2015 | CN104314460A 新型螺旋钻机 The new auger |
| 01/28/2015 | CN103161163B 旋压凿岩植入嵌岩预应力管桩 Spinning implants embedded rock drilling prestressed pipe |
| 01/22/2015 | WO2015009283A1 Systems and methods for minimizing impact loading in downhole tools |
| 01/22/2015 | US20150021094 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations |
| 01/22/2015 | US20150021011 Ball launcher for a tubing string |
| 01/21/2015 | CN204113111U 双工位液压冲击回转钻进、旋喷动力头 Duplex hydraulic impact rotary drilling, rotary jet power head |
| 01/21/2015 | CN204113110U 具有液压回转机构的井下潜孔钻机 Underground DTH drilling rig has a hydraulic rotary mechanism |
| 01/21/2015 | CN104295232A 空气潜孔锤单动双管取心跟管钻具 DTH hammer single action with double tube coring drill pipe |
| 01/21/2015 | CN104295231A 一种低摩阻可变径液力推力器 A low friction can be adjustable hydraulic thruster |
| 01/21/2015 | CN103216193B 矩形孔钻井机 Rectangular hole drilling machine |
| 01/15/2015 | WO2015006325A1 Pressure equalizers for shaft seals of a downhole gearbox |
| 01/15/2015 | WO2015003267A1 Mud motor with integrated reamer |
| 01/15/2015 | WO2015003215A1 Dynamic seal tube for a down hole hammer drill |
| 01/15/2015 | US20150014059 CV Joint for Down Hole Motor and Method |
| 01/15/2015 | US20150013995 Methods and systems for operating a downhole tool |
| 01/14/2015 | EP2823138A1 Deactivation of packer with safety joint |
| 01/14/2015 | CN204098778U 螺杆钻具 Screw drill |
| 01/14/2015 | CN104278950A 双工位液压冲击回转钻进、旋喷动力头 Duplex hydraulic impact rotary drilling, rotary jet power head |
| 01/14/2015 | CN104278949A 用于反循环潜孔锤的加压流体流动系统和反循环潜孔锤 Pressurized fluid flow system and reverse circulation DTH for reverse circulation DTH |
| 01/14/2015 | CN104278948A 一种螺杆钻具传动轴总成 A screw drill shaft assembly |
| 01/13/2015 | US8932034 Well pump with seal section having a labyrinth flow path in a metal bellows |
| 01/13/2015 | US8931579 Borehole generator |
| 01/13/2015 | US8931578 Robotic tunneling system |
| 01/07/2015 | EP2822151A1 Top drive drilling system and other applictions using a low speed direct drive AC motor |
| 01/07/2015 | EP2820227A1 Feeding device for a downhole tool and method for axial feeding of a downhole tool |
| 01/07/2015 | CN204082907U 用于涡轮钻具的磁悬浮轴承节 Turbodrill for the magnetic bearing section |
| 01/07/2015 | CN204082028U 旋挖钻机通用钻杆与潜孔锤连接装置 Universal rotary drilling rig drill pipe and DTH connection device |
| 01/07/2015 | CN204081992U 悬挂式回旋震冲工程开槽机 Roundabout earthquake engineering hanging punching slot machines |
| 01/07/2015 | CN204081991U 一种适用于气体钻井井下动力钻具的双作用液压动力短节 Double-acting hydraulic power one for gas drilling downhole drill short section |
| 01/07/2015 | CN204081990U 一种低摩阻可变径液力推力器 A low friction can be adjustable hydraulic thruster |
| 01/07/2015 | CN104265160A 水力振荡轴向冲击器 Hydraulic axial oscillation impactor |
| 01/07/2015 | CN104265159A 一种潜孔冲击器 One kind of DTH hammer |
| 01/07/2015 | CN102943626B 冲击旋切钻头及使用该钻头的入岩钻机 Peeling impact drill and use the drill rig into the rock |
| 12/31/2014 | CN204060508U 一种潜孔冲击器 One kind of DTH hammer |
| 12/31/2014 | CN204060507U 单直缸多级液力加压器 Single straight multistage hydraulic cylinder pressurizer |
| 12/31/2014 | CN204060506U 一种用于钻探机的螺套传动装置 Lo sets of gear for a drilling machine |
| 12/31/2014 | CN104251262A 用于涡轮钻具的磁悬浮轴承节 Turbodrill for the magnetic bearing section |
| 12/31/2014 | CN103114804B 接头密封装置 Joint sealing device |
| 12/31/2014 | CN102966305B 一种近钻头周向谐振冲击器 Near drill circumferential resonance impactor |
| 12/31/2014 | CN102966304B 泥浆护壁空气潜孔锤钻具及钻井工艺 Slurry Wall DTH hammer drilling and drilling technology |
| 12/30/2014 | US8919461 Well tool having a nanoparticle reinforced metallic coating |
| 12/30/2014 | US8919460 Large core sidewall coring |
| 12/24/2014 | CN104246123A 纤维增强弹性体定子 Fiber reinforced elastomeric stator |
| 12/24/2014 | CN104246111A 非转动致动的安全接头 Non-rotating actuation of safety joint |
| 12/24/2014 | CN104246106A 具有同心旋转驱动系统的井下马达 Concentric rotation downhole motor drive system |
| 12/24/2014 | CN104234689A 用于锚杆机的远程调节器 For remote adjuster bolt machine |
| 12/24/2014 | CN104234623A 一种无接杆钻井头 Post a non-drilling head |
| 12/24/2014 | CN104234620A 钻岩机、旋转套筒和润滑的方法 Rock drilling machine, rotary sleeve and lubrication methods |
| 12/23/2014 | US8915314 Down-the-hole drill drive coupling |