E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells

More topics under "E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells" (324,830)
E21B 1 - Percussion drilling (2,080)
E21B 10 - Drill bits (19,464)
E21B 11 - Other drilling tools (454)
E21B 12 - Accessories for drilling tools (993)
E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619)
E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198)
E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712)
E21B 25 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors (2,102)
E21B 27 - Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits (1,068)
E21B 28 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production (888)
E21B 29 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground (5,744)
E21B 3 - Rotary drilling (4,061)
E21B 31 - Fishing for or freeing objects in boreholes or wells (3,788)
E21B 33 - Sealing or packing boreholes or wells (33,564)
E21B 34 - Valve arrangements for boreholes or wells (14,685)
E21B 35 - Methods or apparatus for preventing or extinguishing fires (324)
E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (4,262)
E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129)
E21B 4 - Drives for drilling, used in the borehole (6,032)
E21B 40 - Tubing catchers, automatically arresting the fall of oil-well tubing (79)
E21B 41 - Equipment or details not covered by groups (7,984)
E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186)
E21B 44 - Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions (5,356)
E21B 45 - Measuring the drilling time or rate of penetration (257)
E21B 47 - Survey of boreholes or wells (31,352)
E21B 49 - Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (11,875)
E21B 6 - Drives for drilling with combined rotary and percussive action (930)
E21B 7 - Special methods or apparatus for drilling (22,064)

Patents for E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (2,021)
04/2006
04/27/2006	WO2006043829A1 A method and a device for setting a casing
04/27/2006	WO2006043823A1 A well pump device
04/27/2006	US20060087449 Apparatus and methods for conveying and operating analytical instrumentation within a well borehole
04/27/2006	US20060086536 Electrical transmission apparatus through rotating tubular members
04/27/2006	US20060086509 Redundant Hydraulic System for Safety Valve
04/27/2006	CA2583936A1 A well pump device
04/27/2006	CA2579306A1 Drill bushing
04/26/2006	EP1540219A4 Method and apparatus for replacement of underground pipe
04/26/2006	EP1540131A4 "top drive swivel apparatus and method"
04/20/2006	WO2006041343A1 Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform
04/20/2006	US20060081508 Drill fluid screening device
04/20/2006	CA2569323A1 Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform
04/19/2006	EP1647669A1 Method for determining a stuck point for pipe, and free point logging tool
04/19/2006	EP1647336A1 Drill fluid screening device
04/19/2006	EP1604092A4 Method for drilling and completing wells
04/19/2006	EP1549824A4 Mono diameter wellbore casing
04/18/2006	US7028779 Auto-extending/retracting electrically isolated conductors in a segmented drill string
04/18/2006	US7028777 Open water running tool and lockdown sleeve assembly
04/13/2006	WO2006038854A1 Rock drilling device
04/13/2006	WO2006038851A1 Sleeve arrangement
04/13/2006	WO2006038850A1 Housing arrangement
04/13/2006	WO2006003259A8 Method for controlling percussion device, software product, and percussion device
04/13/2006	US20060076149 Downhole Safety Valve Assembly Having Sensing Capabilities
04/13/2006	US20060076132 Apparatus and method for formation evaluation
04/13/2006	US20060076130 Tubing annulus plug valve
04/13/2006	DE102005048332A1 Vorrichtung und Verfahren zur Formationsbewertung Apparatus and method for formation evaluation
04/13/2006	DE102005045980A1 Vorrichtungen und Verfahren zum Verringern von Abstandseffekten eines Bohrlochwerkzeugs Devices and methods for reducing a downhole tool standoff effects
04/13/2006	CA2580082A1 Rock drilling device
04/13/2006	CA2576897A1 Sleeve arrangement
04/13/2006	CA2576893A1 Housing arrangement
04/12/2006	EP1551744A4 Tubular slip device and method
04/12/2006	CN1759401A Improvements in drilling apparatus
04/12/2006	CN1759271A Multiple dispensing check valve delivery system
04/12/2006	CN1757881A Apparatus and method for formation evaluation
04/12/2006	CN1250982C Downhole NMR tool having a programmable pulse sequencer
04/11/2006	US7026950 Motor pulse controller
04/05/2006	EP1642029A2 Pump for tail production of oil
04/05/2006	CN1756890A Method for drilling and completing wells
04/04/2006	US7021405 Determining gradients using a multi-probed formation tester
03/2006
03/30/2006	WO2006033606A1 Rock drill bit
03/30/2006	WO2006033579A1 Bend stiffener
03/30/2006	WO2006032734A1 Method for breaking rock
03/30/2006	WO2006032733A1 Arrangement for controlling percussive rock drilling
03/30/2006	US20060065408 Methods and apparatus for expanding tubular strings and isolating subterranean zones
03/30/2006	US20060065406 Interposed joint sealing layer method of forming a wellbore casing
03/30/2006	US20060065403 Bottom plug for forming a mono diameter wellbore casing
03/30/2006	US20060065396 Compositions containing water control treatments and formation damage control additives, and methods for their use
03/30/2006	US20060065394 Apparatus and methods for reducing stand-off effects of a downhole tool
03/30/2006	CA2576681A1 Rock drill bit
03/29/2006	EP1606493A4 Automated control system for back-reaming
03/28/2006	US7017662 High temperature environment tool system and method
03/23/2006	WO2006031119A1 Method and system for return of drilling fluid
03/23/2006	US20060060389 Rock drill bit having outer and inner rock-crushing buttons
03/23/2006	US20060060388 Rock drill bit and a thread joint therefor
03/23/2006	DE102005041248A1 Vorrichtung und Verfahren zur Formationsbewertung Apparatus and method for formation evaluation
03/22/2006	EP1558831A4 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications
03/22/2006	EP1549823A4 Bottom plug for forming a mono diameter wellbore casing
03/16/2006	WO2005024171A3 Expandable tubular
03/16/2006	US20060054330 Mono diameter wellbore casing
03/15/2006	EP1635032A1 Method and apparatus for controlling surface well equipment
03/15/2006	EP1633954A1 Apparatus and method for treating injection fluid
03/15/2006	CN1748074A Automated control system for back-reaming
03/15/2006	CN1245640C Downhole NMR tool having a programmable pulse sequencer
03/09/2006	US20060048940 Automatic Tool Release
03/09/2006	US20060048935 Casing with isolated annular space
03/08/2006	CN1743644A Formation evaluation system and method
03/08/2006	CA2518347A1 Method and apparatus for controlling wellbore equipment
03/07/2006	US7007753 Top drive swivel apparatus and method
03/02/2006	WO2006023218A2 Rotating pressure control head
03/02/2006	WO2006022584A1 Hydraulic impact mechanism
03/02/2006	US20060042793 Apparatus and method for formation evaluation
03/01/2006	EP1511914A4 Equalizer valve and method of use
02/2006
02/28/2006	US7004510 Tubing containment system
02/23/2006	WO2006019346A1 A rock drill bit and a thread joint
02/23/2006	US20060039758 Apparatus and method of installation of a mono-column floating platform
02/23/2006	US20060038147 Unitary blade seal for a shearing blind ram in a ram type blowout preventer
02/23/2006	US20060037744 Rotating pressure control head
02/23/2006	CA2576145A1 A rock drill bit and a thread joint
02/22/2006	EP1627986A1 Rotating blow out preventer
02/22/2006	EP1627131A1 System, lifting device and method for supporting a pipe string
02/22/2006	CN1737327A Rotating pressure control device
02/21/2006	US7000503 Support system for power tong assembly
02/19/2006	CA2782859A1 Rotating pressure control head
02/19/2006	CA2513974A1 Rotating pressure control head
02/16/2006	WO2005024170A3 Radial expansion system
02/14/2006	US6997647 Active hold down system for jack-up drilling unit
02/13/2006	CA2515865A1 Compositions containing water control treatments and formation damage control additives, and methods for their use
02/09/2006	US20060027371 Apparatus and method
02/09/2006	DE102005032257A1 Anordnung, Werkzeug und Verfahren zum Messen der Resistivität in einem Bohrloch, Verfahren zum Aufbauen der Anordnung und Verfahren zum Steuern einer Bohrrichtung Assembly tool and method for measuring the resistivity in a borehole method for constructing the arrangement and method for controlling a drilling direction
02/09/2006	DE102005030559A1 Vorrichtung und Verfahren zum Charakterisieren einer unterirdischen Formation und Vorrichtung und Verfahren zum Perforieren eines verrohrten Bohrlochs An apparatus and method for characterizing a subterranean formation, and apparatus and methods for perforating a cased borehole
02/08/2006	EP1624152A2 Hydraulically set casing packer
02/07/2006	US6993963 Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method
02/02/2006	WO2005100738A3 Heavy load carry slips and method
02/02/2006	US20060021755 Underbalanced marine drilling riser
02/01/2006	EP1620628A2 Arctic platform
01/2006
01/26/2006	US20060018190 Tool for Measuring Perforation Tunnel Depth
01/26/2006	US20060017287 Tie-back connection for subsea well
01/26/2006	US20060016595 Downhole Measurement System and Method
01/26/2006	US20060016593 Downhole Measurement System and Method
01/26/2006	US20060016592 Kick warning system using high frequency fluid mode in a borehole

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