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)
01/2006
01/26/2006	DE102005029349A1 Drahtleitungsgebundene Anordnung, Verfahren zum Beurteilen einer unterirdischen Formation, Bohrloch-Werkzeug und Verfahren zur Probennahme in einem Bohrloch Conducted wire assembly method for evaluating a subterranean formation downhole tool and method for sampling in a borehole
01/24/2006	CA2260459C Improved earth-boring bits
01/21/2006	CA2671526A1 Controlling transient pressure conditions in a wellbore
01/21/2006	CA2671521A1 Controlling transient pressure conditions in a wellbore
01/19/2006	WO2006006873A1 Directly operated control valve in a valve device
01/19/2006	US20060014648 Brine-based viscosified treatment fluids and associated methods
01/19/2006	US20060011389 Downhole tool
01/19/2006	US20060011385 Apparatus and system for well placement and reservoir characterization
01/19/2006	US20060011347 Inner riser adjustable hanger and seal assembly
01/18/2006	EP1617039A1 Brine based viscosified treatment fluids and associated methods
01/18/2006	CN1721654A Downhole formation testing tool
01/14/2006	CA2511788A1 Apparatus and system for well placement and reservoir characterization
01/12/2006	WO2006004494A1 A drill bit
01/12/2006	WO2006004426A1 System for delivery of a tracer in fluid transport systems and use thereof
01/12/2006	WO2006003259A1 Method for controlling percussion device, software product, and percussion device
01/12/2006	US20060005963 Downhole plug
01/12/2006	CA2571595A1 A drill bit
01/12/2006	CA2569090A1 System for delivery of a tracer in fluid transport systems and use thereof
01/10/2006	US6983803 Equalizer valve and associated method for sealing a fluid flow
01/05/2006	WO2006001704A1 A method of filtering pump noise
01/05/2006	US20060003626 Cable connection
01/05/2006	US20060000618 Line Slack Compensator
01/05/2006	US20060000606 Apparatus and method for characterizing a reservoir
01/05/2006	US20060000603 Formation evaluation system and method
01/05/2006	CA2571190A1 A method of filtering pump noise
01/04/2006	EP1611313A2 Restricting fluid passage and novel materials therefor
01/04/2006	CN1715614A Apparatus and method for characterizing a reservoir
12/2005
12/29/2005	WO2005047640A3 Sytem and method for damping vibration in a drill string
12/29/2005	WO2005026493A3 Phospholipid lubricating agents in aqueous based drilling fluids
12/29/2005	US20050284639 Pressure-compensated flow shut-off sleeve for wellhead and subsea well assembly including same
12/29/2005	US20050284629 Downhole formation testing tool
12/28/2005	EP1609005A2 Method to determine properties of a sedimentary body from thickness and grain size distribution at a point within the body
12/28/2005	EP1502002A4 Well completion with merged influx of well fluids
12/28/2005	EP1485567A4 Mono-diameter wellbore casing
12/22/2005	WO2005121506A1 Method and system for collaring
12/22/2005	WO2005121495A1 A device in plants for the collection of particles sedimented from water
12/22/2005	US20050279496 Apparatus and Method to Detect Actuation of a Flow Control Device
12/22/2005	CA2561894A1 Method and system for collaring
12/21/2005	EP1606547A2 Tubing containment system
12/21/2005	EP1606493A2 Automated control system for back-reaming
12/21/2005	EP1606487A2 Pneumatic perforator with independent rotation of the drill
12/21/2005	EP1458949A4 Rotary support table
12/20/2005	US6977866 Method and process for prediction of subsurface fluid and rock pressures in the earth
12/20/2005	CA2142114C Multi-lateral selective re-entry tool
12/15/2005	US20050276665 Remotely operated deployment system and method of use
12/14/2005	EP1604323A2 Improvements in drilling apparatus
12/14/2005	EP1604092A2 Method for drilling and completing wells
12/13/2005	US6973977 Using fluids at elevated temperatures to increase fracture gradients
12/08/2005	WO2005116394A1 A method and a device for expanding a body under overpressure
12/08/2005	WO2005116390A1 Telescopic feed beam for rock drill
12/08/2005	US20050269107 Mono-diameter wellbore casing
12/08/2005	US20050269105 Apparatus for facilitating the connection of tubulars using a top drive
12/08/2005	US20050269102 Tieback connector
12/08/2005	US20050269096 Method and apparatus for blow-out prevention in subsea drilling/completion systems
12/07/2005	EP1601857A2 Determination of the orientation of a downhole device
12/07/2005	EP1478824A4 Well system
12/01/2005	US20050263288 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
11/2005
11/30/2005	EP1599634A2 Method of installation of a tension leg platform
11/29/2005	CA2455544C Accelerated production of gas from a subterranean zone
11/24/2005	US20050261138 Viscosified treatment fluids comprising scleroglucan or diutan and associated methods
11/24/2005	US20050257936 Gravity valve for a downhole tool
11/24/2005	US20050257933 Casing running head
11/24/2005	US20050257930 Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling
11/22/2005	CA2357569C Hardfaced drill bit structures and methods for making such structures
11/17/2005	WO2005108932A1 Means for measuring fluid flow in a pipe
11/17/2005	WO2005079186A3 Expandable tubular
11/17/2005	WO2005049957A3 High temperature environment tool system and method
11/17/2005	WO2004099552A3 Determining gradients using a multi-probed formation tester
11/17/2005	WO2004094766A3 Apparatus for radially expanding and plastically deforming a tubular member
11/17/2005	DE102005014489A1 Trägersystem für eine maschinell angetriebene Greifzangenanordnung Support system for a machine-driven grasping forceps assembly
11/10/2005	WO2005106192A1 Method for displacing petroleum from a carbonate rock
11/10/2005	WO2004092528A3 Apparatus for radially expanding and plastically deforming a tubular member
11/10/2005	US20050247453 Magnetic impulse applied sleeve method of forming a wellbore casing
11/10/2005	US20050247449 Surge chamber assembly and method for perforating in dynamic underbalanced conditions
11/03/2005	WO2005103443A1 A method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/03/2005	WO2005012684A3 Compositions and methods for treating subterranean formations
11/03/2005	US20050244229 Method and apparatus for replacement of underground pipe
11/03/2005	US20050241855 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
11/03/2005	US20050241821 System and method for well workover with horizontal tree
11/03/2005	CA2563342A1 A method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/02/2005	CN1690358A Method and apparatus for reducing pressure in a perforating gun
11/01/2005	US6959774 Drilling apparatus
11/01/2005	US6959770 Portable drilling apparatus
10/2005
10/27/2005	WO2005100738A2 Heavy load carry slips and method
10/27/2005	WO2005045174A3 Gravel pack completion with fiber optic monitoring
10/27/2005	US20050240351 Method for determining a stuck point for pipe, and free point logging tool
10/27/2005	US20050236183 Method and Apparatus for Reducing Pressure in a Perforating Gun
10/27/2005	US20050236155 Online thermal and watercut management
10/27/2005	US20050235780 Support system for power tong assembly
10/26/2005	EP1588013A2 Multiple dispensing check valve delivery system
10/20/2005	WO2005098196A1 Clamping apparatus, drill string component and rock drilling rig
10/20/2005	WO2005098194A1 Device for a drilling tool
10/20/2005	US20050230123 Seal receptacle using expandable liner hanger
10/20/2005	US20050230111 agglomeration of particles having curable coatings, by the pumping mixtures of the particles and liquid fracturing fluid into subterranean zones, then curing the coatings with heat; stabiliztion; well completion
10/20/2005	US20050230105 Well completion with merged influx of well fluids
10/20/2005	CA2556430A1 Clamping apparatus, drill string component and rock drilling rig
10/13/2005	WO2005021921B1 A method of radially expanding and plastically deforming tubular members
10/12/2005	EP1583886A2 Isolated electrical connection in a drill string
10/06/2005	WO2005093203A1 Automatic cleaning device
10/06/2005	WO2004093521A3 Method to determine properties of a sedimentary body from thickness and grain size distribution at a point within the body

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