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)
12/2010
12/15/2010CN1769644B Kick warning system using high frequency fluid mode in a borehole
12/15/2010CN101918863A Apparatus and system for well placement and reservoir characterization
12/14/2010CA2500954C Gripping system for a tong
12/08/2010CN1890451B System and method for damping vibration in a drill string
12/07/2010US7845408 Top drive swivel apparatus and method
11/2010
11/24/2010CN101892839A Apparatus and method for formation evaluation
11/23/2010US7836795 Power tong device
11/17/2010CN1757881B Apparatus for formation evaluation
11/16/2010US7832500 Wellbore drilling method
11/09/2010US7830749 Method of filtering pump noise
11/03/2010CN1950586B Method and system for controlling drilling parameter during initial period for drilling rock
11/03/2010CN101099025B Dust suction method relating to drilling arrangement and drilling arrangement
11/03/2010CN101035962B Bend stiffener
11/02/2010US7825664 Resistivity tool with selectable depths of investigation
11/02/2010US7825073 as gelling agent, viscosifier; for use in industrial, oilfield, geothermal, coal, coal bed methane, and/or subterranean operations
11/02/2010US7823646 Riser tensioner with lubricant reservoir
11/02/2010US7823638 Sound source for stimulation of oil reservoirs
10/2010
10/28/2010US20100270083 Housing arrangement
10/26/2010US7819199 Method and a device for setting a casing
10/26/2010US7819196 Method for operating actuator and an actuator device for use in drainage pipe used for producing oil and/or gas
10/20/2010CN101864933A Method for reducing pressure in a perforating gun
10/19/2010US7814992 Device for storage of tubulars, apparatus for handling tubulars and a method for disassembling a pipe string
09/2010
09/29/2010CN1737327B Rotating pressure control device
09/29/2010CN1690358B Method and apparatus for reducing pressure in a perforating gun
09/21/2010US7798247 Arrangement for sucking dust
09/21/2010CA2600425C A method and a device for in situ formation of a seal in an annulus in a well
09/21/2010CA2568230C Submersible pump
09/14/2010US7793713 Apparatus and method for formation evaluation
09/14/2010CA2538771C Phospholipid lubricating agents in aqueous based drilling fluids
09/02/2010US20100218943 Apparatus and method for formation evaluation
09/02/2010US20100218934 Method and device for positioning a power tong at a pipe joint
09/01/2010EP2223164A2 Apparatus and system for well placement and reservoir characterization
09/01/2010EP1583886B1 Isolated electrical connection in a drill string
08/2010
08/31/2010US7786733 Apparatus and system for well placement and reservoir characterization
08/25/2010CN101095239B High temperature electronic device
08/17/2010US7775303 Device for a drilling tool
08/17/2010US7775290 Apparatus for radially expanding and plastically deforming a tubular member
08/17/2010CA2489968C Method for the circulation of gas when drilling or working a well
08/10/2010CA2612219C Arrangement for positioning drilling unit
08/10/2010CA2532793C Top drive swivel apparatus and method
08/10/2010CA2510741C Apparatus and method for characterizing a reservoir
07/2010
07/27/2010US7762352 Arrangement and method for controlling drilling parameters
07/27/2010US7762346 Method and system for collaring
07/20/2010CA2606139C Annular packer sealingly movable on tubular
07/20/2010CA2528014C Shale inhibition additive for oil/gas down hole fluids and methods for making and using same
07/14/2010EP1680477B1 Phospholipid lubricating agents in aqueous based drilling fluids
07/13/2010US7755361 Apparatus and system for well placement and reservoir characterization
07/13/2010US7753142 Drilling unit
07/13/2010CA2602069C An apparatus and a method for deployment of a well intervention tool string into a subsea well
07/06/2010CA2589788C Method for casing drilling, drilling unit and adapter device
06/2010
06/29/2010US7743853 Top drive drilling apparatus
06/29/2010US7743851 Method and rock drilling rig for hole drilling
06/16/2010CN101027455B Method for controlling percussive rock drilling and rock drilling equipment
06/10/2010US20100139930 System and method to seal using a swellable material
06/09/2010EP2194228A1 Method for determining a stuck point for pipe, and free point logging tool
06/09/2010CN101184904B Method and means for providing time delay in downhole well operations
06/09/2010CN101048569B Drilling unit
06/08/2010US7730973 Housing arrangement for a drill rig
06/08/2010US7730942 Method and equipment for the reduction of multiple dispersions
06/08/2010CA2633627C Method for completing a well using increased fluid temperature
06/01/2010CA2512485C Tool for measuring perforation tunnel depth
05/2010
05/25/2010US7721816 Drilling/bolting machine having a manual operator input device with enable switch and related methods
05/25/2010CA2601568C Rock drill and method of breaking rock
05/19/2010EP2185666A1 Treatment fluids comprising clarified xanthan and associated methods
05/18/2010US7717190 Method for controlling percussion device, software production, and percussion device
05/11/2010US7712545 Telescopic feed beam for rock drill
05/11/2010CA2522259C Apparatus and method for formation evaluation
05/05/2010CN1743644B Formation evaluation system and method
05/05/2010CN1715614B Apparatus and method for characterizing a reservoir
04/2010
04/27/2010US7705294 Method of visualizing target objects in a fluid-carrying pipe
04/27/2010US7703526 Apparatus and method for characterizing a reservoir
04/20/2010US7699122 Device for handling of pipes at a drill floor
04/13/2010CA2588065C A method and a device for solvent injection in a subsurface well
04/13/2010CA2495508C Charge holder apparatus
04/07/2010EP1458949B1 Rotary support table
03/2010
03/23/2010US7681660 Arrangement for positioning drilling unit
03/16/2010CA2526024C Slip on screen with expanded base pipe
03/09/2010US7675029 Apparatus and a method for visualizing target objects in a fluid-carrying pipe
03/09/2010CA2525035C Determining gradients using a multi-probed formation tester
02/2010
02/25/2010US20100044044 Controlling transient underbalance in a wellbore
02/23/2010US7665537 System and method to seal using a swellable material
02/23/2010US7665531 Apparatus for facilitating the connection of tubulars using a top drive
02/02/2010US7654344 Torque converter for use when drilling with a rotating drill bit
01/2010
01/14/2010US20100008732 Arctic Platform
01/13/2010CN100580215C Telescopic feed beam for rock drill
01/07/2010US20100003086 Arctic Platform
01/07/2010US20100003084 Arctic Platform
12/2009
12/22/2009US7634946 Testing of bottomhole samplers using acoustics
12/17/2009WO2009076183A3 Apparatus and system for well placement and reservoir characterization
12/17/2009US20090308616 Method and Apparatus for a Monodiameter Wellbore, Monodiameter Casing, Monobore, and/or Monowell
12/15/2009CA2535610C Automated arm for positioning of drilling tools such as an iron roughneck
12/09/2009CN100566948C Method for breaking rock
12/08/2009US7628223 Rock drilling device
12/08/2009CA2522505C Method for determining a stuck point for pipe, and free point logging tool
12/08/2009CA2509408C Arctic platform
12/01/2009CA2581324C Arrangement for controlling percussive rock drilling
11/2009
11/19/2009US20090283266 Apparatus and method for formation evaluation
11/19/2009DE102005014489B4 Trägersystem für eine maschinell angetriebene Greifzangenanordnung Support system for a machine-driven grasping forceps assembly
11/17/2009US7617887 Method for casing drilling, drilling unit and adapter device
11/10/2009CA2512480C Controlling transient pressure conditions in a wellbore
1 2 3 4 5 6 7 8 9 10 11 12 13 ... 21