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)
01/2009
01/20/2009	US7478674 System and method for fracturing and gravel packing a wellbore
01/14/2009	EP1756395B1 A method and a device for expanding a body under overpressure
01/13/2009	US7475726 Continuous monobore liquid lining system
01/08/2009	US20090008099 Centralization and Running Tool and Method
01/08/2009	US20090008082 Sound source for stimulation of oil reservoirs
01/07/2009	CN100449113C Method for drilling and completing wells
01/06/2009	CA2512651C Integrated drilling dynamics system and method of operating same
12/2008
12/25/2008	US20080315882 Apparatus and System for Well Placement and Reservoir Characterization
12/25/2008	US20080315471 System And Method For Damping Vibration In A Drill String
12/25/2008	US20080314644 Device for a Borehole Arrangement
12/18/2008	US20080308283 Annular Packer Device
12/18/2008	US20080308266 Drillable bridge plug
12/17/2008	EP1485567B1 Mono-diameter wellbore casing
12/16/2008	US7464609 Means for measuring fluid flow in a pipe
12/11/2008	US20080304939 System for Handling Pipes Between a Pipe Rack and a Derrick, and Also a Device for Assembling and Disassembling Pipe Stands
12/10/2008	EP1633954B1 Apparatus and method for treating injection fluid
12/10/2008	EP1502002B1 Well completion with merged influx of well fluids
12/04/2008	US20080296067 Adjustable Winged Centering Tool for Use In Pipes With Varying Diameter
12/02/2008	US7458419 Apparatus and method for formation evaluation
12/02/2008	US7458267 Acoustic emission inspection of coiled tubing
11/2008
11/27/2008	WO2004085790A3 Apparatus for radially expanding and plastically deforming a tubular member
11/27/2008	US20080292412 Arctic platform
11/27/2008	US20080292411 Arctic platform
11/25/2008	US7455128 Automated arm for positioning of drilling tools such as an iron roughneck
11/20/2008	US20080286053 Arctic platform
11/20/2008	US20080282847 Method and Device for Positioning a Power Tong at a Pipe Joint
11/18/2008	US7452162 Method of installation of a tension leg platform and tendons therefor
11/18/2008	CA2517670C Accelerated production of gas from a subterranean zone
11/18/2008	CA2511280C Kick warning system using high frequency fluid mode in a borehole
11/13/2008	US20080277122 Apparatus and a Method For Deployment of a Well Intervention Tool String Into a Subsea Well
11/06/2008	US20080271895 Method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/04/2008	CA2423265C Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method
10/2008
10/30/2008	US20080264646 Modular Actuator for Subsea Valves and Equipment, and Methods of Using Same
10/23/2008	US20080259728 Method of Filtering Pump Noise
10/23/2008	US20080257116 Power Tong Device
10/21/2008	US7438133 Apparatus and method for radially expanding and plastically deforming a tubular member
10/14/2008	CA2529832C Combined surface and wellbore electromagnetic measurement system and method for determining formation fluid properties
10/09/2008	US20080245528 Separating Device
10/08/2008	CN101283158A Method and rock drilling rig for hole drilling
10/07/2008	US7433784 Method to determine properties of a sedimentary body from thickness and grain size distribution at a point within the body
10/07/2008	CA2514776C Method for completing a well using increased fluid temperature
10/02/2008	US20080236433 Rock Drill and Method of Breaking Rock
09/2008
09/30/2008	CA2512443C Downhole measurement system and method
09/25/2008	US20080230270 Arrangement for Positioning Rock Drilling Rig on Drilling Site
09/25/2008	US20080230228 System and Method For Well Intervention
09/23/2008	US7426963 Piggable flowline-riser system
09/23/2008	CA2507787C Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling
09/18/2008	US20080223777 Apparatus for Sieving and Fluid Separation and a Method of Using Same
09/17/2008	EP1968924A1 Method for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids
09/16/2008	US7424918 Interposed joint sealing layer method of forming a wellbore casing
09/16/2008	US7424909 Drillable bridge plug
09/11/2008	US20080216577 Testing of bottomhole samplers using acoustics
09/10/2008	EP1751393B1 Telescopic feed beam for rock drill
09/03/2008	EP1963613A1 Plug retrieval and debris removal tool
09/02/2008	CA2500036C Apparatus and method for generating electrical power in a borehole
09/02/2008	CA2494283C Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production
08/2008
08/28/2008	US20080202816 Torque Converter for Use When Drilling with a Rotating Drill Bit
08/28/2008	US20080202768 Device for Selective Movement of Well Tools and Also a Method of Using Same
08/28/2008	US20080202753 Method and apparatus for expanding and separating tubulars in a wellbore
08/27/2008	CN101253471A Adaptive user interface for rock drilling rig
08/27/2008	CN101253308A User interface for rock drilling rig
08/26/2008	US7416770 Reinforcement ring
08/26/2008	US7416033 Instrumented drill head, related drilling/bolting machines, and methods
08/26/2008	CA2447677C Process for the recovery of oil from a natural oil reservoir
08/21/2008	US20080196943 Condition Checking Apparatus and Method
08/20/2008	EP1957748A1 Method and device for positioning a power tong at a pipe joint
08/19/2008	CA2470653C Rotary support table
08/14/2008	US20080190663 Method and System for Return of Drilling Fluid
08/14/2008	US20080190616 Apparatus for Radially Expanding and Plastically Deforming a Tubular Member
08/14/2008	US20080190612 Method and a Device for in Situ Formation of a Seal in an Annulus in a Well
08/13/2008	EP1954912A1 Drill fluid collecting device
08/12/2008	US7410327 Arctic platform
08/12/2008	US7410010 Hydraulic impact mechanism
08/12/2008	CA2504297C Gravity valve for a downhole tool
08/06/2008	EP1678408A4 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system
08/05/2008	US7407011 Tubing annulus plug valve
07/2008
07/31/2008	US20080179058 Top drive swivel apparatus and method
07/30/2008	CN101233292A Adjustable winged centering tool for use in pipes with varying diameter
07/24/2008	US20080173446 Method and Device For Fluid Displacement
07/22/2008	CA2521459C Apparatus and methods for reducing stand-off effects of a downhole tool
07/15/2008	US7398833 Heavy load carry slips and method
07/15/2008	US7398832 Mono-diameter wellbore casing
07/09/2008	CN100400241C Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device
07/08/2008	US7395866 Method and apparatus for blow-out prevention in subsea drilling/completion systems
07/08/2008	US7395712 Testing of bottomhole samplers using acoustics
07/03/2008	US20080156545 Method, System, and Apparatus of Cutting Earthen Formations and the like
07/03/2008	US20080156502 Method and Device for Setting a Bottom Packer
07/02/2008	EP1937930A1 Separating device
07/02/2008	CN101213350A Arrangement for controlling pressure-fluid-operated drilling equipment
07/01/2008	US7392844 Method of treating an oil or gas well with biodegradable low toxicity fluid system
07/01/2008	US7392843 Method of treating subterranean formations to enhance hydrocarbon production using proppants
06/2008
06/26/2008	US20080149395 Drilling or Service Rig
06/26/2008	US20080149342 Device For Storage Of Tubulars, Apparatus For Handling Tubulars And A Method For Disassembling A Pipe String
06/25/2008	EP1934429A1 Method and device for dosing of chemicals into injection water
06/25/2008	CN101208494A Arrangement for positioning drilling unit
06/25/2008	CN101208157A Apparatus for sieving and fluid separation and a method of using same
06/19/2008	US20080142270 Housing Arrangement
06/19/2008	US20080142235 Drilling Unit
06/19/2008	US20080142229 Apparatus for Radially Expanding and Plastically Deforming a Tubular Member
06/18/2008	EP1931853A1 Method and rock drilling rig for hole drilling

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