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)
12/2014
12/23/2014US8915312 Drill motor enhancement providing improved sealing performance and longevity
12/17/2014CN204024466U 一种气体钻井井下动力钻具 A gas drilling downhole drilling
12/17/2014CN204024465U 一种适用于气体钻井井下动力钻具的密闭循环式液驱马达 One for gas drilling downhole drilling fluid circulating in a closed motor drive
12/17/2014CN204024464U 一种适用于气体钻井井下动力钻具的隔液排气传动短节 One for gas drilling downhole drilling fluid compartment exhaust drive short section
12/17/2014CN204024463U 一种适用于气体钻井井下动力钻具的双作用压气动力短节 One for gas drilling downhole drill aerodynamic pressure double acting spool
12/17/2014CN104220691A 用于进行钻孔和给钻孔布设内衬的设备 Drilling and for drilling equipment used for laid-lined
12/17/2014CN104220217A 冲击装置 Impact device
12/17/2014CN104213829A 气体钻井井下动力钻具 Downhole drilling gas drilling
12/17/2014CN103104192B 灌注粧螺旋成孔机 Perfusion makeup machine screw into the hole
12/16/2014US8910720 Downhole tool with roller screw assembly
12/11/2014US20140360787 Down Hole Motor Apparatus and Method
12/11/2014US20140360783 Pressure control check valve for a down-the-hole drill hammer
12/10/2014CN204002550U 高气压冲击器 High pressure impactor
12/10/2014CN204002549U 一种潜孔钻车动力头推进提升机构 One kind of DTH Drill propulsion power head lifting mechanism
12/10/2014CN204002548U 嵌岩斜桩冲击钻管锤系统 Oblique shock rock-socketed pile hammer drill pipe system
12/10/2014CN104204396A 钻机移动系统 Rig Mobile Systems
12/10/2014CN104204395A 利用具有带混合衬的转子和/或定子的渐进空腔式马达和泵的设备和方法 The use of a rotor having a liner with a mixing apparatus and methods and / or the stator of progressive cavity pumps and motors
12/10/2014CN104196465A 旋挖钻机通用钻杆与潜孔锤的连接方式及其应用 Universal rotary drilling rig drill pipe and DTH connections and its application
12/10/2014CN104196441A 一种螺杆钻具传动轴总成 A screw drill shaft assembly
12/10/2014CN104196440A 一种密封型螺杆钻具传动轴总成 A sealed-type screw drill shaft assembly
12/10/2014CN103061671B 井下减阻降扭器 Underground drag down the torque converter
12/09/2014US8905148 Force monitoring tractor
12/04/2014US20140353041 Cam mechanism for downhole rotary valve actuation and a method for drilling
12/02/2014US8900062 Driveshaft assembly for a downhole motor
12/02/2014US8899351 Apparatus and method for adjusting power units of downhole motors
11/2014
11/27/2014US20140348452 Bearing assemblies including thick superhard tables and/or selected exposures, bearing apparatuses, and methods of use
11/27/2014US20140345895 Air supplying method for cluster hammer having nozzles installed
11/25/2014US8893827 Drilling apparatus
11/25/2014US8893824 Steerable drilling system
11/25/2014US8893823 Methods and apparatus for drilling directional wells by percussion method
11/20/2014US20140338980 Systems and Methods for Limiting Torque Transmission
11/20/2014US20140338978 Wellbore percussion adapter and tubular connection
11/18/2014US8888474 Downhole motors and pumps with asymmetric lobes
11/18/2014US8887835 Drilling apparatus
11/13/2014US20140332275 Positive Displacement Motor With Radially Constrained Rotor Catch
11/13/2014US20140332237 Chain service indicator
11/06/2014US20140326509 Pipe in pipe bha electric drive motor
11/06/2014US20140326454 Methods and apparatus for wellbore construction and completion
11/04/2014US8876500 Centering coupling for splined shafts submersible pumping systems and electrical submersible pumps
10/2014
10/30/2014US20140318868 Device and Method for Drilling with Continuous Tool Rotation and Continuous Drilling Fluid Supply
10/30/2014US20140318867 Self-Aligning Open-Hole Tractor
10/28/2014US8870187 Shaft seal for down-hole tools
10/28/2014US8869917 Housing, mandrel and bearing assembly for downhole drilling motor
10/23/2014US20140311804 Isolation Adapter For Using Multiple Power Sources In A Bottom Hole Assembly
10/16/2014US20140308149 Long Reach Spindle Drive Systems and Method
10/16/2014US20140305711 Downhole drilling assembly
10/16/2014US20140305710 Downhole drilling assembly
10/16/2014US20140305706 Drilling tool for laying a tube in the ground
10/09/2014US20140299382 Drive Shaft Assembly for a Downhole Motor
10/08/2014EP2785947A2 Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners
10/07/2014US8852004 Downhole torque limiting assembly for drill string
10/02/2014WO2014158645A1 Fluid driven drilling motor
09/2014
09/30/2014CA2729542C Reaming tool
09/25/2014WO2014149342A1 Bearing apparatuses including dual material bearing surfaces
09/25/2014WO2014149132A2 Drill bit with replaceable blades, fluid pulse and fluid collision
09/25/2014WO2014149131A2 Drill bit with fluid pulse and fluid collision
09/25/2014US20140284937 Vibration energy harvester
09/25/2014US20140284111 Horizontal directional drilling system
09/24/2014EP2780539A1 Formation fracturing
09/23/2014US8840309 Methods of operating a bearing apparatus including tilting pads
09/23/2014US8839883 Piston tractor system for use in subterranean wells
09/18/2014WO2014144256A1 Drill motor connecting rod
09/18/2014US20140262677 Locking clutch for downhole motor
09/18/2014US20140262530 Adjustable Mud Motor Housing Assembly
09/18/2014US20140262524 Downhole turbine motor and related assemblies
09/18/2014US20140262521 Top Drive Main Shaft with Threaded Load Nut
09/16/2014US8833491 Downhole rotational lock mechanism
09/16/2014US8833490 Self-circulating drill bit
09/16/2014US8833487 Mechanical specific energy drilling system
09/16/2014US8833450 Nitrogen containing compounds as corrosion inhibitors
09/16/2014US8833441 Cable suspended pumping system
09/12/2014WO2014138068A1 Method and apparatus to manufacture a progressive cavity motor or pump
09/12/2014WO2014137543A2 Adjustable bend assembly for a downhole motor
09/12/2014WO2014134736A1 Downhole motor
09/12/2014CA2809075A1 Adjustable mud motor housing assembly
09/11/2014US20140251689 Flow measurement and flow sampling system
09/09/2014US8827562 Mud-lubricated bearing assembly with mechanical seal
09/09/2014US8827009 Drilling pressure intensifying device
09/04/2014US20140246240 Downhole drilling tool
09/04/2014DE112012004695T5 Verstärkte Richtbohranordnungen und Verfahren zu deren Bildung Reinforced Richtbohranordnungen and methods for their formation
09/04/2014CA2844413A1 Drilling apparatus and method
08/2014
08/28/2014WO2014131014A1 Slotted liner drilling
08/28/2014WO2014130684A1 Annular pressure relief system
08/28/2014WO2014130020A1 Downhole rotational lock mechanism
08/28/2014WO2014035901A3 Motor and rotor catch assembly
08/28/2014US20140241654 Bearing apparatus having superhard bearing elements
08/28/2014US20140238746 Actuation mechanisms for downhole assemblies and related downhole assemblies and methods
08/26/2014US8813844 System and method for drilling lateral boreholes
08/21/2014WO2014126774A1 Driveshaft assembly for a downhole motor
08/21/2014WO2014126476A1 A fluid pressure driven, high frequency percussion hammer for drilling in hard formations
08/21/2014US20140231144 Downhole Rotational Lock Mechanism
08/21/2014US20140231143 Pressure Compensation System for a Motor Bearing Assembly
08/19/2014US8807245 Reaming tool
08/19/2014CA2549500C Thrust bearing assembly
08/15/2014CA2843023A1 Pressure compensation system for a motor bearing assembly
08/14/2014WO2014066709A3 Downhole rotary tractor
08/14/2014US20140224545 Driveshaft Assembly for a Downhole Motor
08/14/2014US20140224544 Pneumatic down-the-hole drill
08/13/2014CN203769646U 气动振动式锚杆钻机 Vibratory pneumatic bolt rig
08/13/2014CN203769645U 线投影叶片制动级定转子组合件 Line projection level brake rotor blade assembly
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