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)
03/2011
03/31/2011	WO2011011169A3 Self-adjusting in-flow control device
03/31/2011	WO2010151796A3 Stabilizing downhole tool
03/31/2011	WO2010148301A3 Downhole tools and methods of setting in a wellbore
03/31/2011	WO2010147954A3 Weakpoint coupling of selectively adjustable load bearing capacity
03/31/2011	WO2010141436A3 Vortex induced vibration suppression systems and methods
03/31/2011	WO2010133564A3 Method of protecting a flexible riser and an apparatus therefor
03/31/2011	WO2010116316A3 Method and system for completing a well
03/31/2011	US20110073376 Earth-boring tools having expandable members and methods of making and using such earth-boring tools
03/31/2011	US20110073323 Line retention arrangement and method
03/31/2011	US20110073315 Riser pipe with rigid auxiliary lines assembled by pins
03/31/2011	US20110073314 Riser termination
03/31/2011	CA2773648A1 Method and apparatus for determining locations of multiple casings within a wellbore conductor
03/30/2011	EP2302160A1 Apparatus to mechanically load a compression member
03/30/2011	EP2302159A2 Earth removal member with features for facilitating drill-through
03/30/2011	EP1836426B1 Pseudo two-step connection
03/30/2011	CN201778799U Pipe column structure of underground straddle type packing layer-by-layer fracture acidizing tool for oil and gas well
03/30/2011	CN201778758U Coiled tubing back-pressure valve
03/30/2011	CN201778743U Dropping-prevention device in sleeve
03/30/2011	CN201778742U Rotary connecting sealing device
03/30/2011	CN201778727U Pumping well polished rod lubricating device
03/30/2011	CN201778686U Oil blending and gas prevention integral lifting process string
03/30/2011	CN201778685U Anti-torque drill collar for petroleum drilling
03/30/2011	CN201778684U Multiple-effect strip-shaped diamond stabilizer
03/30/2011	CN201778683U Stinger centralizing guide device for inner tube cementing
03/30/2011	CN201778682U Centralizer with replaceable sleeve for screw drill
03/30/2011	CN201778681U Dome polish rod standby cap of pumping unit well
03/30/2011	CN201778680U Eccentric wear preventive device of sucker rod
03/30/2011	CN201778679U Wellhead polish rod bias-adjustable device
03/30/2011	CN201778678U Oil casing threaded connection
03/30/2011	CN201778677U Surface casing connecting part for recovering slurry during well drilling process
03/30/2011	CN201778676U Low pressure-resistant air-tight seal sleeve joint
03/30/2011	CN201778675U High-efficiency wear-resisting square joint
03/30/2011	CN201778674U Glass fiber reinforced plastic tubing safety joint
03/30/2011	CN201778673U Threaded pipe with molybdenum disulfide plating layer
03/30/2011	CN201778672U Sealing joint body of neutron generator for petroleum logging
03/30/2011	CN201778671U Locking mechanism of expansion cone
03/30/2011	CN201778670U Bolt spring combination type riser connector
03/30/2011	CN201778669U Locking piece connecting type marine riser device
03/30/2011	CN201778668U Elastically centralizing hollow rod
03/30/2011	CN201778667U Double-shouldered drill pipe with improved fatigue strength
03/30/2011	CN201778666U Coupling-free petroleum casing pipe
03/30/2011	CN201778665U Drill rod with spiral cutting edge
03/30/2011	CN201778657U Inclining-preventive drilling tool for gas drilling
03/30/2011	CN101996331A Drilling tool code recognition system
03/30/2011	CN101994503A Production increasing method of coalbed gas
03/30/2011	CN101994496A Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well
03/30/2011	CN101994491A Rib drill rod
03/30/2011	CN101994490A Novel sucker rod centralizer
03/30/2011	CN101994489A Stopper for sucker rod centralizer
03/30/2011	CN101994488A Screw pump well sucker rod centralizer with bidirectional protection effect
03/30/2011	CN101994487A Torsion bearing assembly for transferring torque to drill
03/30/2011	CN101994486A Structure for connecting heat insulation oil pipes
03/30/2011	CN101994485A Thermoplastic oil delivery pipeline system
03/30/2011	CN101994484A Wind-water dual-purpose inserted outburst-prevention drill rod
03/30/2011	CN101994061A Steel for petroleum casing pipe and manufacture method thereof
03/30/2011	CN101994052A Nitrogen-containing austenitic alloy
03/30/2011	CN101429852B Liquid-gas type vibration absorber
03/29/2011	US7913768 Release device
03/29/2011	US7913716 Sealing element and a coupling device provided with such a sealing element
03/29/2011	CA2716077A1 Coiled tubing having a capillary window and method for making same
03/29/2011	CA2655113C Locking mechanism for a ground drill
03/29/2011	CA2654947C High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
03/29/2011	CA2614944C Threaded joint for steel pipe and method for surface treatment of the threaded joint
03/24/2011	WO2011034437A1 Riser tensioner
03/24/2011	WO2010141843A3 Riser floatation with anti-vibration strakes
03/24/2011	US20110067926 Electrically powered tractor
03/24/2011	US20110067880 Bellows type adjustable casing
03/23/2011	EP2299049A2 Coupling for drilling rods
03/23/2011	EP2297427A1 Cementing sub for annulus cementing
03/23/2011	EP2297422A1 Drill packer member, drill pipe, and corresponding drill pipe string
03/23/2011	EP2148972B1 Field-assemblable bow-spring casing centralizer and method of making a centralizer
03/23/2011	EP2094933B1 Device for percussion drilling or rotary percussion drilling in rocky material
03/23/2011	CN201773982U 17-core high voltage plug for drilling apparatus
03/23/2011	CN201771446U Spiral drill collar with thickened middle of pipe body
03/23/2011	CN201771445U Abrasion-resistant drill collar with thickening middle part of tube body
03/23/2011	CN201771444U Drill collar with thickened part at central position of pipe
03/23/2011	CN201771443U 钻杆接头保护套 Drill pipe joints protective sleeve
03/23/2011	CN201771442U Hole punching device for punching holes to realize blasting
03/23/2011	CN201771441U Special wireless drilling inclinometer shock absorber
03/23/2011	CN201771440U 旋转接头 Rotary joint
03/23/2011	CN201771439U Drill collar joint with stress reduction structure
03/23/2011	CN201771438U Split type cambered surface triangle drilling rod for mining
03/23/2011	CN201771437U Drill rod with a wear resistant band
03/23/2011	CN101988372A Processing technology for manufacturing insulated tubing
03/23/2011	CN101988371A Intelligent drilling rod for petroleum and natural gas extraction and manufacture method thereof
03/23/2011	CN101988370A Short-process flexible drill rod producing equipment and process
03/23/2011	CN101988368A Stick-slip vibration shock absorber of (polycrystalline diamond compact) PDC drill head
03/23/2011	CN101555798B Reverse puncher and method for using the puncher for implementing PBA side pile construction
03/22/2011	US7912678 Oilfield equipment identification method and apparatus
03/22/2011	CA2703694C Coupling apparatus
03/22/2011	CA2679905A1 Geothermal power system
03/17/2011	WO2011031682A2 Multiple electric submersible pump system
03/17/2011	WO2011031384A2 Non-rotating buoyancy modules for sub-sea conduits
03/17/2011	WO2010115492A3 Wired drill pipe
03/17/2011	WO2009130440A3 Adjustable length discharge joint for high pressure applications
03/17/2011	US20110061864 Wireless pipe recovery and perforating system
03/16/2011	EP2295716A2 Downhole swellable screen assembly
03/16/2011	EP2295707A2 Wired drill pipe connection for single shouldered application and BHA elements
03/16/2011	EP2295706A2 Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly
03/16/2011	EP2294277A1 Modular low-clearance centralizer and method of making modular low-clearance centralizer

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