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
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)
06/2005
06/02/2005WO2005049956A2 High pressure wireline top-entry packoff apparatus and method
06/02/2005US20050115799 Elevator system
06/02/2005US20050115741 Well system
05/2005
05/31/2005US6899318 Wave seal to resist extrusion during equalization
05/26/2005WO2005047640A2 Sytem and method for damping vibration in a drill string
05/26/2005WO2005047639A2 Subsea completion system and method of using same
05/26/2005WO2005028803A9 Expandable tubular
05/26/2005WO2004074623A3 Automated control system for back-reaming
05/26/2005US20050113259 Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids
05/26/2005US20050109514 Tree mounted well flow interface device
05/26/2005CA2755416A1 A torsional bearing assembly for transmitting torque to a drill bit
05/24/2005US6896048 Rotary support table
05/19/2005WO2005045175A2 Downhole fiber optic wet connect and gravel pack completion
05/19/2005WO2005045174A2 Gravel pack completion with fiber optic monitoring
05/19/2005WO2005021922A3 Threaded connection for expandable tubulars
05/19/2005WO2005017303A9 Expandable tubular
05/19/2005WO2004083594A3 Apparatus and method radially expanding a wellbore casing using an expansion mandrel and a rotary expansion tool
05/19/2005WO2004083592A3 Apparatus and method for running a radially expandable tubular member
05/19/2005WO2004083591B1 Apparatus and method for radially expanding a wellbore casing using an adaptive expansion system
05/19/2005US20050104176 High temperature electronic devices
05/19/2005US20050103502 Collapsible expansion cone
05/12/2005WO2005042911A2 System for drilling oil and gas wells using oversized drill string to achieve increased annular return velocities
05/12/2005WO2005042908A2 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system
05/12/2005WO2005042906A2 Subsea completion system, and methods of using same
05/12/2005WO2005042905A2 A piggable flowline-riser system
05/12/2005WO2005019592A3 Using fluids at elevated temperatures to increase fracture gradients
05/12/2005US20050098356 Auto-extending/retracting electrically isolated conductors in a segmented drill string
05/12/2005US20050098321 Subsea completion system, and methods of using same
05/12/2005CA2540996A1 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system
05/06/2005WO2005040545A2 Tree mounted well flow interface device
05/06/2005WO2005017299A3 Pump for tail production of oil
05/06/2005WO2004099550B1 Drilling aparatus
05/06/2005WO2004081333A3 A method and apparatus for a downhole excavation in a wellbore
05/05/2005US20050096846 Method and apparatus for controlling wellbore equipment
04/2005
04/28/2005WO2004081335A3 A motor pulse controller
04/21/2005WO2005035931A2 Thermal stability agent for maintaining viscosity and fluid loss properties in drilling fluids
04/21/2005WO2005035930A2 Threaded connections and methods for forming threaded connections
04/21/2005WO2004092530A3 Radially expanding casing and driling a wellbore
04/21/2005WO2003060282A3 Method and apparatus for replacement of underground pipe
04/19/2005US6881079 Technique for providing power to a completion used in a subterranean environment
04/14/2005WO2005033466A2 Portable drilling apparatus
04/14/2005WO2005033465A2 Downhole fiber optic acoustic sand detector
04/14/2005WO2004005660A3 Active hold down system for jack-up drilling unit
04/14/2005US20050077048 Downhole tubular splitter assembly and method
04/13/2005CN1606653A Rotary support table
04/12/2005US6877965 Mechanical bladder pump
04/07/2005WO2004018824B1 Magnetic impulse applied sleeve method of forming a wellbore casing
04/07/2005US20050074210 Downhole fiber optic wet connect and gravel pack completion
04/07/2005US20050074196 Gravel pack completion with fiber optic monitoring
04/07/2005US20050072587 Portable drilling apparatus
03/2005
03/31/2005WO2005028803A2 Expandable tubular
03/31/2005WO2004083591A3 Apparatus and method for radially expanding a wellbore casing using an adaptive expansion system
03/31/2005WO2004079146A3 Method of installation of a tension leg platform
03/31/2005WO2004074622A3 Protective compression and tension sleeves for threaded connections for radially expandable tubular members
03/31/2005WO2004046495A3 Method of treating subterranean formations to enchance hydrocaronproduction using proppants
03/24/2005WO2005026493A2 Phospholipid lubricating agents in aqueous based drilling fluids
03/24/2005WO2005005764A3 Spiral tubular tool and method
03/24/2005WO2005001231A3 Submersible pump
03/24/2005WO2004083593A3 Radial expansion and milling of expandable tubulars
03/24/2005WO2004076798A3 Apparatus for radially expanding and plastically deforming a tubular member
03/23/2005CN1599995A Burst QAM downhole telemetry system
03/17/2005WO2005024171A2 Expandable tubular
03/17/2005WO2005024170A2 Radial expansion system
03/17/2005WO2005024169A2 Automated arm for positioning of drilling tools such as an iron roughneck
03/17/2005WO2004079147A9 Method and apparatus for drilling with casing
03/17/2005WO2004079145A3 Method for drilling and completing wells
03/17/2005WO2004035983A3 Open water running tool and lockdown sleeve assembly
03/17/2005US20050056434 Collapsible expansion cone
03/17/2005US20050056433 Mono diameter wellbore casing
03/16/2005CN2685530Y Drill bits for enlarging the borehole
03/10/2005WO2005022133A1 An apparatus and a method of visulazing target objects in a fluid-carrying pipe
03/10/2005WO2005021922A2 Threaded connection for expandable tubulars
03/10/2005WO2005021921A2 A method of radially expanding and plastically deforming tubular members
03/10/2005WO2005021920A2 Downhole tubular splitter assembly and method
03/10/2005US20050054540 especially fatty acid amidopropyl propylene glycol diammonium phosphate salts and a weighting agent that is a Ia, IIa, rare earth or transition metal halide, nitrate, sulfate, formate, acetate or propionate; for brine-based drilling fluids especially clear brines
03/10/2005US20050051343 Apparatus for facilitating the connection of tubulars using a top drive
03/10/2005CA2536749A1 An apparatus and a method of visualizing target objects in a fluid-carrying pipe
03/10/2005CA2536623A1 A method of radially expanding and plastically deforming tubular members
03/09/2005EP1511914A2 Equalizer valve and method of use
03/03/2005WO2005019592A2 Using fluids at elevated temperatures to increase fracture gradients
03/03/2005WO2004106693A3 Method and appartus for cutting earthen formations
03/03/2005WO2004099550A3 Drilling aparatus
03/03/2005WO2004053284A3 Isolated electrical connection in a drill string
03/03/2005WO2004025067A8 Reducing paraffin, asphaltene, and hydrate accumulations in wells
03/03/2005US20050047884 Automated arm for positioning of drilling tools such as an iron roughneck
03/03/2005US20050045342 Apparatus and method for completing a wellbore
03/03/2005US20050045337 Method for completing a well using increased fluid temperature
02/2005
02/24/2005WO2005017303A2 Expandable tubular
02/24/2005WO2005017302A2 Changing the temperature of offshore produced water
02/24/2005WO2005017300A2 Continuous monobore liquid lining system
02/24/2005WO2005017299A2 Pump for tail production of oil
02/24/2005US20050039913 Changing the temperature of offshore produced water
02/24/2005CA2535817A1 Expandable tubular
02/24/2005CA2532224A1 A piston pump for tail production of oil
02/22/2005CA2167491C Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
02/17/2005WO2004101945A3 Method for improved vertical sweep of oil reservoirs
02/17/2005WO2004083589A3 Restricting fluid passage and novel materials therefor
02/17/2005WO2004022903A3 Top drive swivel apparatus and method
02/17/2005US20050034898 Using fluids at elevated temperatures to increase fracture gradients
02/17/2005US20050034853 Top drive swivel apparatus and method
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