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)
06/2014
06/11/2014CN103857866A Fuel tank
06/11/2014CN102747949B Fast propulsion hydraulic control loop of down-the-hole drill rig
06/11/2014CN101784744B Power transmission system for use with downhole equipment
06/10/2014US8746369 Umbilical technique for robotic mineral mole
06/05/2014WO2014085447A1 Downhole pulse generating device for through-bore operations
06/05/2014WO2013186554A3 Apparatus and method for controlling a part of a downhole assembly, and a downhole assembly
06/05/2014US20140151127 Control mechanism
06/05/2014CA2813912A1 Improved bearing assembly for downhole motor
06/04/2014EP2737154A1 Drilling device and method for using the same
06/04/2014CN203626600U 液压潜孔钻机 Hydraulic submersible drilling rig
06/04/2014CN203626599U 一种坑道钻机回转器 One kind of rotary drilling rig is
06/04/2014CN103842606A Pneumatic down-the-hole drill
06/04/2014CN103835647A Method for drilling floating pebble bed
06/03/2014US8739901 Wellbore percussion adapter and tubular connection
05/2014
05/30/2014WO2014081305A1 Well runner
05/30/2014WO2013150078A3 Symmetrical bit for directional drilling tool
05/28/2014EP2734699A1 Movement control system for a drilling plant
05/28/2014DE102009038385B4 Rammbohrvorrichtung mit einem pneumatischen Antrieb und einer hydraulischen Umsteuerung der Bewegungsrichtung Rammbohrvorrichtung with a pneumatic actuator and a hydraulic reversing the direction of movement
05/28/2014CN203614028U 一种pdc钻头抗制动装置 One kind of anti-braking device pdc drill
05/28/2014CN103821821A 一种自动调节涡轮钻具轴向载荷的止推轴承组 An automatic adjustment turbodrill axial thrust load bearing assembly
05/27/2014US8733469 Pulse generator
05/22/2014WO2014078344A1 Use of peek film as a wrap insulation material on magnet wire
05/21/2014EP2732171A2 Bearing assemblies, apparatuses, and related method of manufacture
05/21/2014CN203603758U 一种高频冲击器 A high-frequency impactor
05/21/2014CN203603757U 一种旋挖钻机液压手柄 One kind of rotary drilling rig hydraulic handle
05/21/2014CN103806832A 井下动力金属马达总成 Downhole motor assembly Metal
05/21/2014CN102747950B 切削钻机关键凿岩动作单泵液压控制回路 Drilling rigs key cutting action single pump hydraulic control circuit
05/21/2014CN102747948B 切削钻机关键凿岩动作双泵液压控制回路 Drilling rigs key cutting action dual pump hydraulic control circuit
05/20/2014CA2755592C Down-the-hole drill hammer having a sliding exhaust check valve
05/20/2014CA2715603C Passive vertical drilling motor stabilization
05/15/2014WO2014074321A1 Double shaft drilling apparatus with hanger bearings
05/14/2014CN203594356U 近钻头扭转、振荡耦合冲击器 Near-bit torsional oscillation coupling impactor
05/14/2014CN103790513A 气动潜孔锤排渣装置 DTH slagging device
05/14/2014CN102425369B 回转限扭装置 Rotary Torque Limiter device
05/13/2014US8720608 Wellbore instruments using magnetic motion converters
05/13/2014US8720603 Underwater drilling arrangement and method for making a bore
05/13/2014US8720539 Modular power source for subsurface systems
05/08/2014WO2014071108A1 Turbodrill using a balance drum
05/08/2014WO2014069947A1 Punching device using water hammer
05/07/2014EP2726702A1 Downhole tool for determining laterals
05/07/2014EP2726695A1 System and method for enhancing hydraulic fluids for down hole use
05/07/2014CN203584467U 一种涡轮钻具的涡轮转子 A turbine rotor turbine drill
05/07/2014CN101821471B 磁锤 Magnetic hammer
05/01/2014WO2014065797A1 Torque transfer mechanism for downhole drilling tools
05/01/2014US20140116785 Turbodrill Using a Balance Drum
04/2014
04/30/2014CN203570199U Supporting-leg-type pneumatic propelling drilling machine
04/29/2014US8708058 Method and an arrangement for controlling a rock drill
04/24/2014WO2014062158A1 Drilling motor with one-way rotary clutch
04/24/2014US20140110175 Downhole Activation System using Magnets and Method Thereof
04/23/2014CN203559770U Pneumatic down-hole hammer provided with central tube
04/23/2014CN103748307A Methods and systems for controlling torque transfer from rotating equipment
04/23/2014CN102852457B Follow-up drilling machine for down-hole hammer casing pipe
04/23/2014CN102434110B High-speed turbine section for turbine drilling tool
04/23/2014CN102395839B Percussion mole
04/23/2014CN102305068B Development machine
04/22/2014US8701797 Bearing assembly for downhole motor
04/17/2014US20140102802 Center discharge gas turbodrill
04/16/2014CN203548818U Drilling machine and transmission gearbox for same
04/16/2014CN203547547U Rotor wing sliding block type drilling tool
04/16/2014CN203547530U Coaxial double-deceleration forward and reverse two-way output spiral rock-entering drilling machine
04/16/2014CN203547524U Dual-drive coaxial forward and reverse output spiral rock-entering drilling machine
04/16/2014CN103726787A Novel drilling driver
04/16/2014CN103726784A Hydraulic drill carriage pushed control impacting hydraulic return circuit and control method of hydraulic drill carriage pushed control impacting hydraulic return circuit
04/15/2014CA2777356C Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly
04/10/2014WO2014055060A1 Load cross-over slip-joint mechanism and method of use
04/09/2014CN203531746U Bunched type reverse circulation pneumatic down-hole hammer
04/09/2014CN203531745U Bunched type inverse well pneumatic down-hole hammer
04/09/2014CN203531744U Bunched type normal circulation pneumatic down-hole hammer
04/09/2014CN103717823A Drilling tool for laying a tube in the ground
04/09/2014CN102628337B Horizontal submarine polymetallic sulfide deposit area chimney sampling drill
04/09/2014CN102536113B Underground electric drill device and method capable of reducing torque borne by drill stem
04/09/2014CN102209832B Locking clutch for downhole motor
04/02/2014CN203515325U Active regulation type composite drill bit
04/02/2014CN203515311U Shock absorption and strike prevention screw drill
04/02/2014CN103696690A Retractable type down-the-hole drilling tool for constructing cast-in-place pile
04/02/2014CN103696685A Coaxial double speed reduction forward and inverted bidirectional output spiral rock-entering drilling machine
04/02/2014CN103696684A Double-driving coaxial forward and reverse speed-increasing output spiral rock penetrating drilling machine
04/01/2014US8684104 Detachable pipe ramming head with efficient lubrication dispersal
03/2014
03/27/2014WO2014047599A1 Positive displacement motor (pdm) rotary steerable system (rss) and apparatus
03/27/2014WO2014044290A1 Improvements in or relating to drilling apparatus
03/26/2014CN203499609U Gas dividing valve of drilling tool
03/26/2014CN203499556U Down-the-hole drill operation platform
03/26/2014CN203499555U Cut-through type reverse circulation impactor
03/26/2014CN203499554U Motion friction pair for power heads of down-the-hole drill
03/26/2014CN103688014A Selective hydraulic fracturing tool and method thereof
03/26/2014CN103670268A Combined type shallow hole hammer
03/26/2014CN103670264A Double-drive coaxial forward and reverse output spiral rock-entering drilling machine
03/20/2014WO2014043059A1 Integrated motor bearing and rotor
03/20/2014WO2014040202A2 Pressurised fluid flow system including multiple working chambers for a down-the-hole hammer drill and normal- and reverse-circulation down-the-hole hammer drills comprising said system
03/20/2014US20140076638 Pressurized fluid flow system having multiple work chambers for a down-the-hole drill hammer and normal and reverse circulation hammers thereof
03/19/2014EP2707568A1 Device and method for pressure regulation of a well
03/19/2014CN103643892A Tool for feeding drill strings under drive of screw
03/19/2014CN103643891A Large-torque combination screw drill
03/18/2014CA2797565C Jet motor and method for providing rotation in a downhole tool
03/18/2014CA2631544C Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer
03/13/2014WO2014039393A1 Asymmetric lobes for motors and pumps
03/13/2014WO2013156781A3 Wellbore completion system with reaming tool
03/13/2014WO2013079935A3 Improved wireline drilling system
03/13/2014US20140072249 Methods of operating bearing apparatuses
03/13/2014US20140069724 Turbine Speed Control System for Downhole Tool
1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 61