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)
04/2014
04/02/2014CN203515366U Device for hindering vortex-induced vibration of trepanning and diverting spiral strakes
04/02/2014CN203515365U Casing pipe female thread protector easy to assemble and disassemble
04/02/2014CN203515364U Drag reduction tool
04/02/2014CN203515363U Lantern body stabilizer
04/02/2014CN203515362U Coupling for petroleum casing pipe
04/02/2014CN203515361U Sleeve type telescopic short joint for well completion pipe column
04/02/2014CN203515360U Universal joint for rotary steering drilling
04/02/2014CN203515359U Torque-transmission type easy-detachment quick connector
04/02/2014CN203515358U Drilling torque reducer
04/02/2014CN203515357U Oil production pipe column connector
04/02/2014CN203515356U Double-direction self-lock single-thread marine riser connector
04/02/2014CN203515355U Anti-loosening coupling of sucker rod
04/02/2014CN203515354U Adjusting connector
04/02/2014CN203515353U Rapid connector
04/02/2014CN203515352U Seal thread connecting piece special for expansion pipes
04/02/2014CN203515351U Short joint device for disassembling speed pipe column
04/02/2014CN203515350U Single-point and multi-point direction-measuring nipple
04/02/2014CN203515349U Clamp spring type locating connector
04/02/2014CN203515348U Universal disengaging preventing device
04/02/2014CN203515347U Extension jib rod of down-the-hole drill
04/02/2014CN203515346U Special lined oil pipe
04/02/2014CN203515345U Threaded-connection gas lift reverse-circulation double-wall drill pipe
04/02/2014CN203515344U Triangular drill pipe
04/02/2014CN203515343U Double-gas-outlet-channel roller-bit hole rig
04/02/2014CN203515342U Completion pipe string for multi-cluster perforation fracture
04/02/2014CN203515313U Rotary drill rig adjustable in length
04/02/2014CN203515311U Shock absorption and strike prevention screw drill
04/02/2014CN103696755A Insulation pup joint used for electromagnetic wireless measurement while drilling and manufacturing method for insulation pup joint
04/02/2014CN103696739A Device for anhydrous double-tube deep-sea oil production
04/02/2014CN103696707A Stacked-disk stabilizer
04/02/2014CN103696706A Remote-control-while-drilling tapered stabilizer
04/02/2014CN103696705A Control method of interference amount of threads of buttress special threaded oil casing
04/02/2014CN103696704A Dual-tooth-form gas-tight thread
04/02/2014CN103696703A Heat-insulating oil pipe used for small-caliber oil well
04/02/2014CN103696694A Ultra-deep gravel pile drilling tool
04/02/2014CN103696690A Retractable type down-the-hole drilling tool for constructing cast-in-place pile
04/02/2014CN103696686A Jet-type explosive pressure pulse anti-drag drilling tool
04/02/2014CN103695786A Corrosion-resistant highly-extrusion-resistant petroleum casing and production method thereof
04/02/2014CN102741847B Design method for subsea equipment subject to hydrogen induced stress cracking
04/02/2014CN102182418B Joint device for underwater dry-type Christmas tree sealed cabin
04/01/2014US8684851 Floating sub tool
04/01/2014US8684090 Slip connection with adjustable pre-tensioning
03/2014
03/27/2014WO2014047594A1 An improved subsea connector system
03/27/2014WO2014047295A2 Hands free gooseneck with rotating cartridge assemblies
03/27/2014WO2014047063A1 Pipe-in-pipe wired telemetry system
03/27/2014WO2014046859A2 Packer assembly for an offshore riser and method of using same
03/27/2014WO2014046674A1 Pipe-in-pipe wired telemetry system
03/27/2014WO2014046548A1 System for oil and gas exploration and production drilling
03/27/2014WO2014044290A1 Improvements in or relating to drilling apparatus
03/27/2014WO2014013244A3 Structure monitoring
03/27/2014WO2013106388A3 Rf applicator having a bendable tubular dielectric coupler and related methods
03/27/2014US20140086681 For Downhole Reciprocating Pumps, a No Tap Tool with a Clutch
03/27/2014US20140083774 Drilling tool changer apparatus
03/27/2014US20140083711 Hands free gooseneck with rotating cartridge assemblies
03/27/2014US20140083710 Packer assembly for an offshore riser and method of using same
03/26/2014EP2711497A1 Modular shaft for machine tools
03/26/2014EP2710219A1 Cement head with hammer union
03/26/2014EP2710217A1 Thread device, thread joint and drill string component for percussive rock drilling
03/26/2014EP2709899A1 A buoyancy element, riser assembly including a buoyancy element and a method of supporting a riser
03/26/2014CN203500207U Telescoping mechanism of large-scale mechanical device
03/26/2014CN203500156U Drill pipe hydraulic deflection preventing system used for deep-hole linear drilling
03/26/2014CN203499648U Novel oil well oil-extracting pipe column
03/26/2014CN203499591U Thrust slag discharge spiral drilling rod for coal mine tunnel drilling
03/26/2014CN203499590U Down-hole string centering device
03/26/2014CN203499589U Centering device
03/26/2014CN203499588U Cable clamping-prevention device of electric submersible plunger pump well for lifting
03/26/2014CN203499587U Petroleum drill rod rapid-replacement abrasion-proof sleeve
03/26/2014CN203499586U Multi-edge blunt arc double oblique jet flow stabilizer
03/26/2014CN203499585U Gas-tight drilling rod joint
03/26/2014CN203499584U Connector for prolonging service life of diamond compact drilling bit
03/26/2014CN203499583U Non-rotation connector used for connecting continuous pipe and underground tool
03/26/2014CN203499582U Ceramic lined screwed joint
03/26/2014CN203499581U Velocity tube device and coiled tubing thereof
03/26/2014CN203499580U Drill stem hasp device
03/26/2014CN203499579U Drill rod cutting ferrule
03/26/2014CN203499578U Deep water landing drilling rod
03/26/2014CN203499577U Novel anti-corrosion wear-proof special petroleum steel pipe
03/26/2014CN203499557U Hydraulic rock drill
03/26/2014CN103670301A Split type drill rod lifter dust collection cylinder
03/26/2014CN103670300A Novel drill rod lifter
03/26/2014CN103670299A Sucker rod centering device
03/26/2014CN103670298A Sucker rod centering device
03/26/2014CN103670297A Hydraulic casing centralizer
03/26/2014CN103670296A Casing centralizer
03/26/2014CN103670295A Anti-eccentric steel ball centering device
03/26/2014CN103670294A Combined-type mine drill rod
03/26/2014CN103670293A Drilling rod with inner stress release groove
03/26/2014CN103670292A Mining drill rod device
03/26/2014CN103670291A Antiwear joint
03/26/2014CN103670290A High-pressure union
03/26/2014CN103670289A Oil well pipeline
03/26/2014CN103670288A Internal surface local hardening (alloying) eccentric wear prevention oil pipe
03/26/2014CN103670272A Double-speed double-torque crawler type hydraulic cutting drilling machine
03/26/2014CN103667789A Titanium alloy, polish sucker rod made of titanium alloy and application of polish sucker rod
03/26/2014CN102619477B Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint
03/26/2014CN102619476B Pipe body structure of step type hole protecting pipe for gas extraction hole in soft coal bed
03/26/2014CN102365417B Threaded thin-walled drill tube joint
03/26/2014CN101942971B Elastic expansion device
03/25/2014US8678447 Drill pipe system
03/25/2014US8678096 Composite bow centralizer
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