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)
05/2010
05/06/2010US20100108387 Tractor with improved valve system
05/06/2010CA2741782A1 Spindle drive system and method of machining a member using such a system
05/05/2010CN101701504A T-shaped function integration type integral piston for propulsion cylinder of downhole drill
05/04/2010US7708086 Modular drilling apparatus with power and/or data transmission
04/2010
04/29/2010WO2009156739A3 Reaming tool
04/28/2010CN201443561U Special radial bearing for supersonic-speed thermal-spraying screw drill tool
04/28/2010CN201443300U Overflowing and anti-falling integrated screwdrill
04/28/2010CN201443299U Screw drill transmission shaft assembly with impact function
04/27/2010US7703551 Fluid driven drilling motor and system
04/27/2010US7703550 Down hole motor with locking mechanism
04/27/2010CA2472050C Compressed air percussive mechanism for a down hole hammer and down hole hammer
04/22/2010WO2010045115A2 Treating subsurface hydrocarbon containing formations and the systems, methods, and processes utilized
04/22/2010WO2010043757A1 Method and drilling apparatus for down-the-hole drilling
04/21/2010EP2177710A1 Three dimensional steerable system
04/20/2010US7699113 Apparatus and methods for running liners in extended reach wells
04/20/2010CA2479236C Method and device for directional down-hole drilling
04/20/2010CA2459733C Assembly for drilling low pressure formation
04/15/2010WO2010014926A3 Universal joint assembly
04/15/2010US20100089653 Isolation system for drilling systems
04/15/2010US20100089583 Extendable cutting tools for use in a wellbore
04/15/2010DE202010001534U1 Brunnenbohrgerät mit einem Energieversorgungsschlauch und Führungsgestänge Well drilling rigs with an energy supply hose and guide rod
04/14/2010EP2175100A1 Three dimensional steerable system
04/14/2010CN101694151A In-the-hole drill and vibration absorber thereof
04/14/2010CN101694149A Deep well drilling speed reducer and working method thereof
04/13/2010CA2434764C Improved downhole tool
04/13/2010CA2421227C Downhole motor lock-up tool
04/08/2010WO2010037992A1 An apparatus and method for cutting a wellbore
04/08/2010WO2009156736A3 Reaming tool
04/08/2010US20100084144 Instrument centralizer configurable for use with cement evaluation well logging instruments
04/08/2010CA2738830A1 An apparatus and method for cutting a wellbore
04/01/2010US20100078219 Jet motor
03/2010
03/31/2010CN201433707Y Novel earth oil down-hole horizontal drilling assembly
03/30/2010US7687950 Drillstring alternator
03/30/2010US7686102 Jet motor for providing rotation in a downhole tool
03/30/2010US7686100 Technique and apparatus for drilling and completing a well in one half trip
03/30/2010US7686074 Apparatus and method for active circuit protection of downhole electrical submersible pump monitoring gauges
03/30/2010CA2444815C Torque-generating apparatus
03/25/2010WO2010033041A1 Drilling apparatus
03/25/2010CA2774457A1 Drilling apparatus
03/24/2010CN201428375Y Pneumatic impact hammer
03/24/2010CN101676514A Pneumatic drill
03/18/2010WO2010030272A1 Locking clutch for downhole motor
03/18/2010US20100065334 Turbine Driven Hammer that Oscillates at a Constant Frequency
03/18/2010CA2737298A1 Locking clutch for downhole motor
03/17/2010CN101674916A Long reach spindle drive systems and method
03/17/2010CN101673978A Jumbolter motor drive component capable of vibrating
03/17/2010CN101672157A Well-digging and hole-drilling device of oil-field underground pneumatic-hydraulic motor and application thereof
03/16/2010US7677334 Anti-surge/reverse thruster
03/16/2010CA2434155C Device for anchoring a drill string in a borehole
03/11/2010WO2009104109A3 Wellsite systems utilizing deployable structure
03/11/2010US20100059284 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly
03/11/2010US20100059280 Feed mechanism for drilling systems
03/11/2010US20100059277 A reversible, percussive, ram-boring machine
03/10/2010CN101666207A Energy accumulation type hydraulic hole drilling hammer
03/09/2010US7673703 Hand-held power tool having main and handle housings with a connection device for connecting the housings
03/09/2010CA2543554C Asymmetric contouring of elastomer liner on lobes in a moineau style power section stator
02/2010
02/25/2010US20100044111 Percussion Drilling Assembly Having Erosion Retarding Casing
02/18/2010WO2010019972A1 Drill head and apparatus therefor
02/18/2010US20100038142 Apparatus and method for high temperature drilling operations
02/18/2010US20100038138 Tractor with improved valve system
02/17/2010EP2153008A2 Power transmission system for use with downhole equipment
02/16/2010US7661488 Regulator of angle and reactive moment of a gerotor type motor having a spindle and drilling bit in a bent drilling string
02/16/2010US7661487 Downhole percussive tool with alternating pressure differentials
02/16/2010US7661486 Power tool with battery pack ejector
02/16/2010CA2542024C Electrically sequenced tractor
02/16/2010CA2522434C Method of adjusting backlash in a down hole bearing assembly
02/16/2010CA2446097C Apparatus for controlling a downhole drilling motor assembly
02/11/2010US20100032170 Method and apparatus for running tubulars
02/10/2010CN201401128Y Top driving water faucet device for oil and water well maintenance operation
02/10/2010CN101646835A Drilling tool with feed control
02/09/2010US7658244 Device for advancing drillings in the ground
02/03/2010CN201396091Y Rotary drill pipe storage mechanism for seabed drilling rig capable of automatically handling drill pipes
02/03/2010CN201396065Y Down-the-hole drill head
02/03/2010CN101641489A Drilling tool with fluid cleaner
02/02/2010US7654337 Arrangement for controlling rock drilling
01/2010
01/28/2010WO2010009826A1 Earth auger device
01/28/2010US20100018775 Drilling Tool with Fluid Cleaner
01/28/2010US20100018720 Expandable ramp gripper
01/28/2010US20100018695 Gripper assembly for downhole tools
01/26/2010CA2468545C Downhole assembly releasable connection
01/21/2010WO2010008356A1 Electrical drill
01/21/2010DE102008028997A1 Drilling method for producing borehole in e.g. earth in residential area, involves converting electric and/or hydraulic energy into mechanical energy in borehole for propulsion and driving of drilling tool
01/20/2010CN201386508Y All-hydraulic drilling machine unit
01/20/2010CN101629469A Locating method of static cover on TC bearing
01/20/2010CN100582433C Hole bottom annular spacing strong suction device of through type down-the-hole hammer
01/19/2010CA2397335C Bearing assembly for mud motor
01/14/2010US20100006342 Method of making wellbore moineau devices
01/07/2010WO2010002963A1 Downhole power generator and method
01/07/2010US20100000793 Downhole power generator and method
01/07/2010US20100000067 Battery For A Power Tool With A Battery Pack Ejector
01/07/2010CA2729161A1 Downhole power generator and method
12/2009
12/31/2009US20090321141 Methods and Apparatus for Wireline Drilling On Coiled Tubing
12/31/2009US20090321136 Drilling apparatus and method for drilling wells
12/30/2009WO2009051938A3 Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same
12/30/2009EP2136962A1 Long reach spindle drive systems and method
12/30/2009CA2729543A1 Reaming tool
12/30/2009CA2729542A1 Reaming tool
12/23/2009WO2009135120A3 Thrust bearing assembly
12/23/2009WO2009126429A3 Kinetic energy harvesting in a drill string
12/23/2009CN101608532A Downhole drill and shock absorber thereof
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