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 › E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
10/2008
10/29/2008CN201141283Y Drilling rod with joint
10/29/2008CN101294481A High-efficiency helical water-through jackrod
10/28/2008US7441602 Flowline insulation system
10/28/2008CA2370844C Thread form with multifaceted flanks
10/23/2008WO2008127894A2 Multipart sliding joint for floating rig
10/23/2008WO2008124855A2 Method and device for securing an externally threaded object against being unscrewed
10/23/2008WO2008060893B1 Large bore packer and methods of setting same
10/23/2008WO2008057145A3 Dual rod drill pipe with improved flow path method and apparatus
10/23/2008US20080261044 Rapidly self-assembled thin films and functional decals
10/23/2008US20080257603 Telescopic Conductor Casing for a Well Installation and a Method of Driving Same into the Underground
10/23/2008US20080257542 Low Carbon Steel Expandable Tubular
10/23/2008DE102007019168A1 Drill has tubular drive shaft connected by coupling ring to drill shaft, coupling ring being fitted with external sealing sleeve and sealing ring between sleeve and drive shaft
10/22/2008EP1983151A2 Separator for mounting several pipeline conduits on a parallel axis
10/22/2008EP1983148A1 Flexible Drill Shaft
10/22/2008EP1982042A1 Bore selector
10/22/2008EP1982040A1 Improved shoe
10/22/2008EP1982039A1 Improvements in and relating to downhole tools
10/22/2008EP1532388B1 Tubular threaded joint which is impervious to the external environment
10/22/2008CN201137467Y Adjustable type centralizer
10/22/2008CN201137466Y Helical type pumping rod anti-corrosive wear-resistant device
10/22/2008CN201137465Y Low yield well pumping unit
10/22/2008CN201137464Y Prearranged process pipe column for gas well maintenance without killing
10/22/2008CN201137463Y Multiple co-seepage corrosion resistant oil extraction water injection oil conduit
10/22/2008CN101292074A Diameter expanding groove cutting device and expanding/contracting mechanism tool
10/22/2008CN101289925A Heat insulated tubing machining process
10/21/2008CA2509062C Casing centraliser
10/21/2008CA2465111C Method for conditioning wellbore fluids and sucker rod therefore
10/21/2008CA2418147C Cleaning and doping of tubulars
10/21/2008CA2360930C Multilateral well and electrical transmission system
10/20/2008CA2628981A1 Flexible drill shaft
10/16/2008WO2008122749A1 An apparatus for venting an annular space between a liner and a pipeline of a subsea riser
10/16/2008WO2008122423A2 Rod coupling comprising a pin
10/16/2008WO2008122416A2 Rod coupling comprising a sacrificial element
10/16/2008WO2008034024A3 Capillary injector
10/16/2008US20080251296 Countersink Roof Bit Drill And Method For Using The Same
10/16/2008US20080251257 Multipart Sliding Joint For Floating Rig
10/16/2008DE102007016824A1 Pipe coupler for earth drill pipe, has transverse element provided at pipe filling end, where longitudinal opening and transverse recess are provided at pipe filling end, and transverse bar exhibits geometrical form
10/16/2008DE102007016822A1 Gestängekupplung mit Zapfen Pushrod connector with pin
10/15/2008CN201133220Y Coupling protector
10/15/2008CN101287888A Well having inductively coupled power and signal transmission
10/15/2008CN101285373A Protective covering method of pipe thread
10/15/2008CN101285151A Petroleum case pipe with high strength and toughness and producing method thereof
10/14/2008US7434631 Apparatus and method of controlling motion and vibration of an NMR sensor in a drilling BHA
10/14/2008US7434624 Hybrid tension-leg riser
10/14/2008CA2496161C High expansion anchor system
10/14/2008CA2472547C Centraliser
10/14/2008CA2375360C Swivel apparatus
10/11/2008CA2587255A1 Perforated pump protector assembly for a down hole oil well pump
10/09/2008WO2008119501A1 Clamp device
10/09/2008US20080249747 Oilfield equipment identification method and apparatus
10/09/2008US20080249720 Composite riser with integrity monitoring apparatus and method
10/09/2008US20080245528 Separating Device
10/08/2008EP1977357A2 Method and system for evaluating groups of threaded connections
10/08/2008EP1977073A1 Steerable drilling system
10/08/2008CN201129147Y Inner sleeve rolling wheel type sucker rod centralizer
10/08/2008CN201129146Y Integral drill rod of terminal main body molding
10/08/2008CN201129145Y Hydraulic block water pipe pillar
10/08/2008CN101280670A Petroleum drill rod anti-wear sleeve
10/08/2008CN101280669A Buckle oil manifold thread buckle spray sand guarding thread
10/08/2008CN101280668A Oil manifold sealing face exclusive use guarding thread
10/08/2008CN101280667A Low helical abrasion-proof drill rod for mash gas pumping drilling construction and machining process thereof
10/07/2008US7431535 Clamp for anchoring production tube, electrohydraulic hose and electric cable simultaneously
10/07/2008US7431094 Method for utilizing downhole safety joint
10/07/2008US7431082 Retaining lines in bypass groove on downhole equipment
10/07/2008CA2494599C Expandable screen with external conduit
10/07/2008CA2444545C Sampling isolator
10/07/2008CA2424395C Apparatus and methods for isolating a wellbore junction
10/07/2008CA2419914C Drill string telemetry system and method
10/02/2008WO2008116891A1 Super high torque dope-free threaded joint
10/02/2008US20080241584 Abrasion of metal with silcon compound for wear resistance surfaces, welds; friction resistance; alloy contains carbon, boron,chromium,iron,niobium, nickel and manganese
10/02/2008US20080238094 Oilfield Threaded Connection
10/02/2008US20080236841 Downhole Swivel Sub
10/02/2008US20080236820 Production of natural gas from hydrates
10/02/2008US20080236813 Shoe
10/02/2008CA2681040A1 Super high torque dope-free threaded joint
10/01/2008EP1974121A1 Method for monitoring fluid properties
10/01/2008EP1973695A2 Keyed connection for drill bit
10/01/2008CN201125725Y Adjustable work measuring suite in creep grinding device
10/01/2008CN201125683Y Centralizer
10/01/2008CN201125682Y Electrothermic rod seal centralizer
10/01/2008CN201125681Y Pumping rod energy-saving anti-bias apparatus
10/01/2008CN201125680Y Slips type casing tube anti-break telescopic pipe
10/01/2008CN201125679Y Oil well shearing type casing tube anti-break telescopic pipe
10/01/2008CN201125678Y Oil well drilling boring tool spherical flexible joint
10/01/2008CN201125677Y Rolling external screw thread antisticking buckle oil well pipe
10/01/2008CN101278102A Surface communication apparatus and method for use with string telemetry
10/01/2008CN101275460A Thermal actuator
10/01/2008CN101275207A H2S-corrosion-resistant tool joint for petroleum drill pipe and hot treatment method thereof
10/01/2008CN100422374C Anti-sulfur drill rod and method for manufacturing the same
09/2008
09/30/2008US7428928 Sealing spring mechanism for a subterranean well
09/30/2008CA2476787C Integrated magnetic ranging tool
09/25/2008WO2008116077A2 Downhole tool string component
09/25/2008WO2008113979A1 Connector
09/25/2008WO2008113113A1 Drilling coupling break-out system
09/25/2008WO2008076697A3 A radial spring latch apparatus and methods for making and using same
09/25/2008US20080230277 Pocket for a Downhole Tool String Component
09/25/2008US20080230218 Segmented Sleeve on a Downhole Tool String Component
09/24/2008EP1972752A2 Protective sleeve for threated connections for expandable liner hanger
09/24/2008CN201121495Y Anti-falling sucker rod centralizer
09/24/2008CN201121494Y Drilling tool drag reduction machine
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