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)
11/2007
11/29/2007US20070274788 Single Pass Drilling Apparatus, Use of a One-Piece Drill Bit, Method and Rock Bolt for Single Pass Rock Bolting
11/28/2007EP1859124A1 Sound source for stimulation of oil reservoirs
11/28/2007CN101080548A A method and a device for sealing a void incompletely filled with a cast material
11/27/2007US7301223 High temperature electronic devices
11/22/2007US20070269281 Drill Bushing
11/22/2007US20070266756 Expandable Tubular
11/21/2007EP1857633A2 Flow control apparatus for use in a wellbore
11/21/2007EP1856372A1 An apparatus and a method for deployment of a well intervention tool string into a subsea well
11/21/2007EP1856371A1 Centralization and running tool and method
11/21/2007EP1856370A1 Pipe handling equipment
11/21/2007CN101076654A Arrangement and method for controlling drilling parameters
11/21/2007CN101076651A Method for casing drilling, drilling unit and adapter device
11/20/2007US7296641 Rock drill bit having outer and inner rock-crushing buttons
11/20/2007US7296633 Flow control apparatus for use in a wellbore
11/20/2007US7296629 Subsea completion system, and methods of using same
11/20/2007CA2415057C Displacement and support device for a portable power tool
11/15/2007WO2005017302A3 Changing the temperature of offshore produced water
11/15/2007US20070261892 Device for a drilling tool
11/15/2007US20070261486 Means For Measuring Fluid Flow In a Pipe
11/14/2007EP1853791A1 System and method for well intervention
11/14/2007EP1766186B1 Method and system for collaring
11/14/2007EP1620628A4 Arctic platform
11/13/2007US7293715 Marking system and method
11/08/2007US20070257405 Method and a Device for Expanding a Body Under Overpressure
11/08/2007US20070256840 Method and Actuator Device
11/06/2007US7290605 Seal receptacle using expandable liner hanger
11/06/2007US7290603 Downhole plug
11/01/2007US20070251731 Hydraulic Impact Mechanism
11/01/2007US20070251728 Automated arm for positioning of drilling tools such as an iron roughneck
10/2007
10/31/2007EP1540131B1 "top drive swivel apparatus and method"
10/30/2007US7289871 Drilling apparatus
10/25/2007US20070246934 Protective compression and tension sleeves for threaded connections for radially expandable tubular members
10/25/2007US20070246266 Drill Bit
10/24/2007CN101061290A 岩石钻头 Rock drill
10/23/2007US7284617 Casing running head
10/23/2007US7284612 Controlling transient pressure conditions in a wellbore
10/23/2007US7284605 Apparatus and methods for reducing stand-off effects of a downhole tool
10/18/2007US20070241277 System for Delivery of a Tracer in Fluid Transport Systems and Use Thereof
10/18/2007US20070240873 Surge chamber assembly and method for perforating in dynamic underbalanced conditions
10/18/2007US20070240514 Testing of bottomhole samplers using acoustics
10/17/2007EP1604323B1 Improvements in drilling apparatus
10/17/2007CN100343481C Automated control system for back-reaming
10/16/2007US7281594 Rock drill bit
10/16/2007US7281593 Method for the circulation of gas when drilling or working a well
10/16/2007US7281577 Downhole measurement system and method
10/11/2007US20070237467 System and Method for Performing and Protecting Hybrid Line Splices
10/10/2007EP1680477A4 Phospholipid lubricating agents in aqueous based drilling fluids
10/10/2007CN101052779A Device for a drilling tool
10/04/2007US20070227752 Telescopic Feed Beam for Rock Drill
10/04/2007US20070227734 Method and Device for Sealing a Void Incompletely Filled with a Cast Material
10/04/2007US20070227726 Slip on screen with expanded base pipe
10/03/2007CN101048582A A drill rig and a method for controlling a fan therei
10/03/2007CN101048569A 钻井单元 Drilling Unit
10/02/2007US7275602 Methods for expanding tubular strings and isolating subterranean zones
10/02/2007CA2437103C Method and apparatus for determining downhole pressures during a drilling operation
09/2007
09/26/2007EP1836374A2 A device for gripping and transporting pipe lenghts and an intermediate storage facility for storage of pipes
09/26/2007EP1718842B1 Method and actuator device
09/25/2007US7273097 Formation characterization using wellbore logging data
09/20/2007US20070215360 Expandable Tubular
09/20/2007US20070215349 Downhole Formation Testing Tool
09/19/2007CN101040098A Housing arrangement
09/13/2007US20070209812 Method And System For Collaring
09/13/2007US20070209793 Apparatus and Method for Formation Evaluation
09/12/2007EP1831500A1 Method for casing drilling, drilling unit and adapter device
09/12/2007EP1831499A1 Drilling unit
09/12/2007EP1551744B1 Tubular slip device and method
09/12/2007CN101035962A Bend stiffener
09/12/2007CN101035961A Sleeve arrangement
09/12/2007CN100337124C Combined surface and wellbore electromagnetic measurement system and method for determining formation fluid properties
09/11/2007US7268100 Shale inhibition additive for oil/gas down hole fluids and methods for making and using same
09/06/2007US20070205001 Expandable Tubular
09/05/2007EP1828536A1 A system for handling pipes between a pipe rack and a derrick, and also a device for assembling and disassembling pipe stands
09/05/2007CN100335736C Rotary support table and method for providing power slip
09/04/2007US7264052 Methods and compositions for consolidating proppant in fractures
09/04/2007US7264050 Method and apparatus for controlling wellbore equipment
08/2007
08/29/2007EP1825110A1 A drill rig and a method for controlling a fan therei
08/29/2007EP1825099A1 A method and a device for sealing a void incompletely filled with a cast material
08/29/2007CN101027455A Arrangement for controlling percussive rock drilling
08/29/2007CN101027165A Method for breaking rock
08/28/2007US7263465 Pipeline integrity management process
08/22/2007EP1819899A1 Arrangement and method for controlling drilling parameters
08/22/2007EP1642029B1 Pump for tail production of oil
08/22/2007CN101023240A 岩石钻头 Rock drill
08/16/2007US20070187146 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
08/14/2007US7255516 Method and apparatus for replacement of underground pipe
08/14/2007US7255164 Casing brush assembly
08/08/2007EP1815103A1 Rock drill bit
08/01/2007EP1812678A1 Arrangement for sucking dust
07/2007
07/31/2007US7249639 Automated arm for positioning of drilling tools such as an iron roughneck
07/31/2007US7249636 System and method for communicating along a wellbore
07/31/2007US7249632 Top drive swivel apparatus and method
07/31/2007US7249631 Slip on screen with expanded base pipe
07/26/2007US20070169943 Method and device for establishing an underground well
07/26/2007US20070169930 Method and apparatus for drilling with casing
07/25/2007EP1809859A1 A method and a device for setting a casing
07/25/2007EP1809852A1 Hydraulic impact mechanism
07/25/2007EP1549824B1 Mono diameter wellbore casing
07/25/2007EP1549823B1 Bottom plug for forming a mono diameter wellbore casing
07/25/2007CN101006247A A rock drill bit and a thread joint
07/19/2007US20070163785 Expandable tubular
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