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)
11/2013
11/13/2013CN203285349U Long auger drilling pressing grouting pile machine telescopic drilling rod
11/13/2013CN203285329U Floor type apparatus for rotating and elevating drilling tool of piling machine
11/13/2013CN103392052A Drill string components resistant to jamming
11/13/2013CN103388464A Concentric double pipe column reverse circulation continuous coal dust washing system well head device
11/13/2013CN103388461A Drill rod with rust-proof protection sleeves
11/13/2013CN103388460A Tool joint provided with all-steel protecting cap
11/13/2013CN103388459A Drill stem with joints provided with thermal sleeves
11/13/2013CN103388458A Drill stem with joints providedwith wear-resistant belts
11/13/2013CN103388457A Flexible pipe body with buoyancy element and method of producing same
11/13/2013CN103388456A Drill rod with earthworm body surface bionic structure
11/13/2013CN102305028B High-tightness high pressure-resistant double-guide faucet
11/13/2013CN102296934B Aluminum alloy drill pipe and production method thereof
11/13/2013CN102272409B Auxiliary subsurface compensator
11/13/2013CN101975030B Heat-preserving and buoyancy-supplying dual-purpose device for deep water top tensioning marine riser
11/12/2013US8579049 Drilling system for enhanced coring and method
11/12/2013US8579047 Downhole reservoir effluent column pressure restraining apparatus and methods
11/07/2013WO2013166359A2 Seal stem
11/07/2013WO2013165679A1 Heat treatment for removal of bauschinger effect or to accelerate cement curing
11/07/2013WO2013165661A1 Tool assembly apparatus and method
11/07/2013WO2013165412A1 Mechanically activated contingency release system and method
11/07/2013WO2013071223A3 System and method for steering a relief well
11/07/2013WO2013033196A3 Identification tags and systems suitable for thin-walled components
11/07/2013WO2012140446A3 Drilling apparatus and method
11/07/2013WO2002085821A3 In situ recovery from a relatively permeable formation containing heavy hydrocarbons
11/07/2013US20130297213 Oilfield equipment identification method and apparatus
11/07/2013US20130292186 Gage cutter protection for drilling bits
11/07/2013US20130292185 Fixed cutter drill bit with rotating cutter disc
11/07/2013US20130292183 Centralizer
11/07/2013US20130292139 Cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto
11/07/2013US20130292138 Seal Stem
11/07/2013US20130292134 Assembly And Method To Secure Tubing String to Blowout Preventer
11/07/2013US20130292132 Method of forming a machinable surface
11/07/2013US20130292129 Solid oxide fuel cell system
11/07/2013US20130292128 Subsea Production System Having Arctic Production Tower
11/06/2013EP2659175A1 Threaded connection for drilling and working hydrocarbon wells
11/06/2013EP2659085A2 Drill rod guide
11/06/2013EP2659084A2 Coupler with bonding surface
11/06/2013EP2658955A1 Process for coating a threaded tubular component, threaded tubular component and resulting connection
11/06/2013CN203271719U Drill stem torque test device
11/06/2013CN203271702U Fracturing pipe in down hole hydraulic fracturing high-pressure seal hole
11/06/2013CN203271644U Negative pressure drilling system for preventing transfinite gas
11/06/2013CN203271621U Inserting type spiral friction drill stem
11/06/2013CN203271620U Combined drill rod
11/06/2013CN203271619U Drill rod with built-in oil pipe
11/06/2013CN203271618U Wear-resistant drill collar
11/06/2013CN203271617U Downhole shock absorption device of screw pump
11/06/2013CN203271616U Oil exploitation tubular column insulated joint
11/06/2013CN203271615U Threaded connector structure for oil casings
11/06/2013CN203271614U Waterproof and connector-swelling-proof drill rod joint
11/06/2013CN203271613U Joint with variable diameters and high wear resistance of oil well fracturing pipeline
11/06/2013CN203271612U Anti-corrosive and anti-eccentric sucker rod coupling
11/06/2013CN203271611U Wear reduction device for sucker rod
11/06/2013CN203271610U Multichannel pressure testing flange used for drilling riser
11/06/2013CN203271609U Sensing logging instrument and pressure-bearing joint for mud resistivity survey
11/06/2013CN203271608U Drilling rod for porous foundation grouting
11/06/2013CN203271607U Multi-trunking petroleum pipeline structure
11/06/2013CN203271606U Novel lock drill rod water flowing plate
11/06/2013CN203271605U Water-saving time-saving drill rod
11/06/2013CN203271604U Sealing buckle for oil casing pipe
11/06/2013CN203271603U Waterproof and swelling-preventing drill rod of internal-flush style connection thread
11/06/2013CN203271602U Friction geological drill rod
11/06/2013CN203271601U Coring drill rod with interlayer and drilling tool thereof
11/06/2013CN203271600U Triangular-prism-shaped drill pipe
11/06/2013CN203270570U Boring pile driver
11/06/2013CN103384716A Process for coating a threaded tubular component, threaded tubular component and resulting connection
11/06/2013CN103382820A Power rat hole device of marine drilling platform
11/06/2013CN103382817A Anchoring anti-blocking drill pipe for coal mine base plate
11/06/2013CN103382816A Device for removing cuttings bed in horizontal well and preventing suction in tripping-out blockage
11/06/2013CN103382815A Method of forming a machinable surface
11/06/2013CN103382814A Flexible electric heating sucker rod
11/06/2013CN101915063B Ground well casing capable of preventing mining damage
11/06/2013CN101849079B Threaded connection comprising at least one threaded element with an end lip for a metal tube
11/06/2013CN101718178B Method for continuously washing coal ash under coal bed methane well in bride type without causing pollution
11/05/2013US8573890 Marine power generator deployment and retrieval system
11/05/2013US8573324 Battery for a power tool
11/05/2013US8573308 Riser centralizer system (RCS)
11/05/2013CA2724709C Field weldable connections
11/05/2013CA2724365C System and method for sealing couplings in downhole tubing strings
11/05/2013CA2587801C Cables
10/2013
10/31/2013WO2013163592A1 Flexible connections
10/31/2013WO2013163357A1 Lifting device having hinged segments
10/31/2013WO2013163356A1 Lifting device for drilling riser
10/31/2013WO2013162563A1 Subsea telescoping and rotatable sub
10/31/2013WO2013162377A1 Drilling device and method for using the same
10/31/2013WO2013061033A3 Riser assembly and method of providing riser assembly
10/31/2013WO2013053449A3 Tubular component for drill stem provided with a transmission sheath fixed by threadings, and method for installing said component
10/31/2013WO2013050138A3 A riser system for transporting a slurry from a position adjacent to the seabed to a position adjacent to the sea surface
10/31/2013US20130287501 Instrumented strakes and fairings for subsea riser and pipeline monitoring
10/31/2013US20130284457 Quick Connect Coupling for Cementing Operations and the Like
10/31/2013US20130284448 Lifting Device Having Hinged Segments
10/30/2013EP2655788A2 Downhole release joint with radially expandable member
10/30/2013EP2655786A2 Downhole release joint with radially expandable member
10/30/2013CN203257344U Auger stem for drilling construction on coal mine bedding layer
10/30/2013CN203257343U Coal mine ascending drilling construction drill rod
10/30/2013CN203257342U Air-tight sealing connecting joint structure of SEW oil casing based on knuckle thread
10/30/2013CN203257341U Automatically-aligned type sucker rod anti-spraying connector
10/30/2013CN203257340U Tool joint matched with 5-inch external upset drill rod
10/30/2013CN203257339U Connecting structure for aluminum alloy drill rod pipe body and steel connectors
10/30/2013CN203257338U High wear-resisting aluminum alloy drill rod structure
10/30/2013CN203257337U Non-thickened connection type thick-wall drill rod
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