E21B 4 - Drives for drilling, used in the borehole

Patents for E21B 4 - Drives for drilling, used in the borehole (6,032)
08/2006
08/01/2006	US7084782 Drill string telemetry system and method
08/01/2006	US7083008 Apparatus and method for pressure-compensated telemetry and power generation in a borehole
07/2006
07/25/2006	US7080701 Electrically sequenced tractor
07/25/2006	US7080700 Tractor with improved valve system
07/25/2006	US7080696 Motor mounting and sealing arrangement for a power tool
07/25/2006	CA2344154C Lubricant circulation system for downhole bearing assembly
07/19/2006	CN1806091A System and method for transmitting electric power into a bore
07/13/2006	US20060151212 Traction control for downhole tractor
07/13/2006	US20060151211 Transmitting electric power into a bore hole
07/11/2006	US7073610 Downhole tool
07/05/2006	EP1468163B1 Compressed air percussive mechanism for a down hole hammer and down hole hammer
07/05/2006	CN1262734C Building block system combined turbine section
07/04/2006	US7070359 Microtunneling systems and methods of use
06/2006
06/27/2006	US7066279 Pneumatic ground piercing tool
06/22/2006	WO2005116484A3 Chain drive system
06/22/2006	US20060131079 Composite motor stator
06/21/2006	CN1791731A Systems and methods using a continuously variable transmission to control one or more system components
06/20/2006	US7063175 Method and apparatus for retaining a down-hole fluid motor and bit assembly
06/20/2006	US7063149 Tubing expansion with an apparatus that cycles between different diameter configurations
06/15/2006	US20060124354 Modular drilling apparatus with power and/or data transmission
06/14/2006	EP1669539A1 Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string
06/13/2006	US7059881 Spoolable composite coiled tubing connector
06/13/2006	US7059426 Acoustic flow pulsing apparatus and method for drill string
06/13/2006	US7059417 Puller-thruster downhole tool
06/08/2006	WO2006058363A1 Positive indication of latching in an inner and outer tube assembly, especially for downhole assemblies
06/08/2006	US20060118337 System for use in a bore hole for axially coupling a tubular end and a mandrel
06/06/2006	US7057316 Downhole torque generator
06/06/2006	US7055629 Inverted motor for drilling rocks, soils and man-made materials and for re-entry and cleanout of existing wellbores and pipes
06/06/2006	US7055621 Method and apparatus for replacement of underground pipe
06/01/2006	WO2005017305A8 Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string
06/01/2006	US20060113114 Drilling tool and method
05/2006
05/31/2006	EP1662087A1 Device and method for providing hydraulic energy
05/31/2006	EP1570156B1 Drilling a borehole
05/30/2006	CA2381324C Continuous wellbore drilling system with stationary sensor measurements
05/26/2006	WO2006055953A1 Modular drillling apparatus with power and/or data transmission
05/26/2006	WO2006054949A1 Percussion device having an adjustable stroke length
05/26/2006	WO2004101947A3 Device for drilling a bore in the ground
05/25/2006	US20060108151 Puller-thruster downhole tool
05/25/2006	US20060108149 Method and apparatus for forming bored hole
05/23/2006	US7048074 Control system for a percussion drive
05/23/2006	US7048050 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
05/23/2006	US7048047 Gripper assembly for downhole tools
05/23/2006	CA2424196C Downhole lubrication replenishment
05/23/2006	CA2292676C Electrically sequenced tractor
05/17/2006	EP1656492A1 Downhole hammer drill
05/16/2006	US7044240 Torque absorber for downhole drill motor
05/11/2006	US20060096784 Device for advancing drillings in the ground
05/11/2006	US20060096769 Pneumatic ground piercing tool
05/11/2006	DE102005051585A1 Pneumatisches Bodenstechwerkzeug Pneumatic floor grooving tool
05/09/2006	US7040421 Liquid driven downhole drilling machine
05/09/2006	US7040417 Drilling systems
05/08/2006	CA2525331A1 Pneumatic ground piercing tool
05/04/2006	US20060090936 Methods for making a turbodrill
05/03/2006	EP1651390A1 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device
05/03/2006	EP1337759B1 Hydraulic drill string accumulator
05/03/2006	CN1766276A DTH hammer double-tube drilling equipment and drilling method thereof
05/02/2006	US7036580 Downhole motor lock-up tool
05/02/2006	CA2214861C Hydraulic drive for rotation of a rock drill
04/2006
04/26/2006	EP1649128A2 Device for drilling a bore in the ground
04/26/2006	EP1540219A4 Method and apparatus for replacement of underground pipe
04/25/2006	US7032658 High power umbilicals for electric flowline immersion heating of produced hydrocarbons
04/25/2006	CA2351128C Apparatus and method for orienting a downhole tool
04/21/2006	CA2690921A1 Harvesting vibration for downhole power generation
04/21/2006	CA2523642A1 Harvesting vibration for downhole power generation
04/20/2006	WO2006008723A3 A down-the-hole hammer
04/18/2006	US7028785 Pneumatic impact piercing tool
04/18/2006	CA2380034C Long reach rotary drilling assembly
04/18/2006	CA2291600C Actively controlled rotary steerable system and method for drilling wells
04/18/2006	CA2190248C Reverse percussion device
04/12/2006	EP1549819B1 A down-the hole hammer
04/12/2006	EP1274916B1 Percussive down-the-hole rock drilling hammer and piston therefor
04/11/2006	US7025142 Bi-directional thruster pig apparatus and method of utilizing same
04/11/2006	US7025130 Methods and apparatus to control downhole tools
04/05/2006	EP1641997A1 Percussive drill with adjustable flow control
04/05/2006	EP1105616B1 Drilling turbine
04/05/2006	CN1756888A A hydraulic drill string device, in particular a hydraulic in-hole rock drilling machine
03/2006
03/30/2006	CA2580701A1 Dual tractor drilling system
03/29/2006	EP1640556A1 Dual tractor drilling system
03/23/2006	DE10106942B4 Pneumatisches Bodenstechwerkzeug mit beweglichem Meißelkopf Pneumatic floor grooving tool with movable cutter head
03/22/2006	CN1246566C Device for anchoring a drill string in a borehole
03/21/2006	US7013989 Acoustical telemetry
03/21/2006	CA2376443C Electrical surface activated downhole circulating sub
03/21/2006	CA2208893C Drilling apparatus
03/21/2006	CA2077177C Modulated bias units for steerable rotary drilling systems
03/17/2006	CA2518879A1 Method and system for reverse circulation drilling
03/16/2006	US20060054354 Downhole tool
03/15/2006	CN1748073A Downhole tool
03/14/2006	US7011156 Percussion tool and method
03/14/2006	CA2309674C Soil consolidation apparatus, tool and method
03/14/2006	CA2291535C Method and apparatus for drilling boreholes in earth formations (drilling liner systems)
03/14/2006	CA2239734C Fluid drilling system
03/09/2006	WO2006005916A3 Closed loop control bore hole drilling system
03/08/2006	EP1497526A4 Bi-directional thruster pig apparatus and method of utilizing same
03/08/2006	EP1466069A4 Downhole assembly releasable connection
03/07/2006	US7007762 Power tool
03/02/2006	WO2006021750A1 Method of drilling a well at or under balance using a electrical submersible pump
03/02/2006	DE102005004184A1 Bearing unit, e.g. for downward drilling motors, has bearing holders with conical running tracks and axes of symmetry that are inclined with respect to main axis of at least one inner ring and/or first outer ring
03/02/2006	DE10112985B4 Schlagbohrkopf und ein Verfahren zum Horizontalbohren mit einem Schlaggerät Impact drill head and a method of horizontal drilling with a percussion device
03/02/2006	CA2578465A1 Method of drilling a well at or under balance using a electrical submersible pump
02/2006
02/23/2006	US20060037743 Electric motors for powering downhole tools

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