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)
12/2012
12/27/2012CA2837771A1 Kobe sub with inflow control, wellbore tubing string and method
12/26/2012EP2536969A2 Expansible threaded joint and method for making same
12/26/2012CN202628078U Electronic multi-point inclinometer centralizer
12/26/2012CN202628071U Novel horizontal well female joint weighting rod
12/26/2012CN202628061U Heating device with double hollow rods
12/26/2012CN202627990U Small-outer-diameter spiral drill collar for well drilling
12/26/2012CN202627989U Integral-type elastic centralizer
12/26/2012CN202627988U Wear-resistant alloy spiral pumping rod centralizer
12/26/2012CN202627987U Gas seal sleeve for non-conventional gas field and sleeve coupling
12/26/2012CN202627986U Movement conversion damping device
12/26/2012CN202627985U Overlarge-size hexagonal kelly
12/26/2012CN202627984U Drill rod for rotary drilling rig and rotary drilling rig with drill rod
12/26/2012CN202627983U Drill rod for coal mine
12/26/2012CN202627982U Splicing rod
12/26/2012CN202627967U Multistage hydraulic punching drill
12/26/2012CN102844519A Jacking units and bellows for down hole intervention tools
12/26/2012CN102839963A While-drilling pressure torque gauging nipple
12/26/2012CN102839951A Production tubular column for rhythm oil layer gravity gas drive and method thereof
12/26/2012CN102839950A Tubular column for process of oil production by layer of oil well
12/26/2012CN102839927A High-pressure water seal dual-power auger stem
12/26/2012CN102839926A Corrector
12/26/2012CN102839925A Centralizer lubricated by well fluid
12/26/2012CN102839924A Sucker rod centralizer lubricated by high pressure well fluid
12/26/2012CN102839923A Drill string anti-looseness device
12/26/2012CN102839922A Novel light drilling tool
12/26/2012CN102839921A Abrasion-resistant connector for oil drilling
12/26/2012CN102839920A Multi-segment transforming tubular column for horizontal well and use method for same
12/26/2012CN102839919A Drill pipe of engineering driller
12/26/2012CN102839332A Novel pumping rod
12/26/2012CN102839324A Steel for high-frequency resistance welding petroleum casing pipe, casing pipe and manufacturing method thereof
12/26/2012CN102116136B Reverse circulation drill and gripper for same
12/26/2012CN102108836B Punch die
12/26/2012CN101975029B Combined drilling tool
12/25/2012US8336644 Rod coupling having a pin
12/25/2012US8336630 Subsea well production system
12/20/2012WO2012174101A2 Corrodible downhole article and method of removing the article from downhole environment
12/20/2012WO2012173932A1 Self contained marine riser fairing
12/20/2012WO2012125831A3 Systems and methods of controling oilfield equipment via inductive coupling
12/20/2012WO2012059736A3 Parameter sensing and monitoring
12/20/2012US20120321394 Self contained marine riser fairing
12/20/2012US20120318507 Hydrocarbon well and technique for perforating casing toe
12/20/2012US20120318495 Subterranean Tool With Sealed Electronic Passage Across Multiple Sections
12/20/2012US20120318494 Connecting Head for Connecting A Cable and A Downhole Tool and Associated Intervention Device
12/20/2012CA2839243A1 Self contained marine riser fairing
12/19/2012CN202612908U Threaded connector for steel pipe
12/19/2012CN202611652U Electro-hydraulic composite penetrating device for underwater horizontal Christmas tree system
12/19/2012CN202611618U Drill rod with antirust protection cover
12/19/2012CN202611617U Internal and external thickening high-strength sleeve connector for thickened oil thermal production well
12/19/2012CN202611616U High-antitorque and high-seal threaded adapting connector
12/19/2012CN202611615U Screwed joint for oil well pipes
12/19/2012CN202611614U Air seal screw connector for low pressure gas field
12/19/2012CN202611613U Ground stress test drill rod shock absorption device
12/19/2012CN202611612U Threaded connection structure of high-torsional strength double-shoulder drill stem
12/19/2012CN202611611U Thread connection structure for drill rod with high torsion-resistant strength and double shoulders
12/19/2012CN202611610U Anti-galling coupling
12/19/2012CN202611609U Drill pipe connector with all-steel protective cap
12/19/2012CN202611608U Coring tool outer barrel thread structure
12/19/2012CN202611607U Thread connector for pipe
12/19/2012CN202611606U Drill pipe with connectors comprising heat-insulation sleeves
12/19/2012CN202611605U Drill rod provided with joints with abrasion-resistant belts
12/19/2012CN202611604U Shoulder ring and threaded joint
12/19/2012CN202611584U Portable well drilling machine
12/19/2012CN102834582A Device for uncoupling drill string, drilling system comprising such uncoupling device, and use of such system
12/19/2012CN102828732A Two-stage two-section separate-injection pipe column capable of back-flushing well and protected by insert seal sleeve and separate-injection method of two-stage two-section separate-injection pipe column
12/19/2012CN102828702A Bit jamming processor
12/19/2012CN102828701A Wear-resisting weak-abrasiveness bionic tool joint
12/19/2012CN102828700A Ball type friction and torsion reducing connector
12/19/2012CN102828699A Anti-torsion sucker rod
12/19/2012CN102828698A Three-slot drill column special for driving vehicle-mounted drilling machine
12/19/2012CN102828691A Packed hole deviation control and near-drill-bit decompression compound way-type drilling unit
12/19/2012CN102031938B Shock absorber for drilling tool in oil-gas drilling
12/19/2012CN101871326B Drill pipe device
12/18/2012US8333253 Sector divided two-way outlet flow deflector unit for a pneumatic power tool
12/18/2012CA2689578C Rotary steerable drilling system
12/18/2012CA2653544C Multi-sectional percussive drill bit assembly
12/18/2012CA2648661C Slotted thread protection device
12/18/2012CA2576138C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
12/18/2012CA2522274C Method of manufacturing stainless steel pipe for use in piping systems
12/18/2012CA2453877C Fluid coolant union
12/14/2012DE212010000211U1 Steuersystem und Schnittstelle für eine Tunnelvorrichtung Control system and interface for a tunnel device
12/13/2012WO2012170326A2 Controllably releasable shifting tool
12/13/2012WO2012168742A2 Riser system
12/13/2012WO2012168702A1 Marine riser contact damage protector
12/13/2012WO2012167356A1 Tubing reconditioning method
12/13/2012WO2011144512A3 Mechanical bending weak link
12/13/2012US20120312601 Systems and methods of a clamp for a sample bottle assembly
12/13/2012US20120312600 Rotary joint for subterranean drilling
12/13/2012US20120312559 Expandable seal with conforming ribs
12/13/2012US20120312556 Seal
12/13/2012US20120312550 Set for obtaining a threaded connection, method for making up and breaking out said connection, and use of said connection in a riser
12/13/2012US20120312544 Riser system
12/13/2012US20120312527 Galling-resistant threaded tubular component, and process for coating said component
12/13/2012DE102010056355B4 Vorrichtung zur Zentrierung einer Erdwärmesonde in einem Bohrloch Apparatus for centering a geothermal probe in a borehole
12/12/2012EP2531691A2 Shock reduction tool for a downhole electronics package
12/12/2012CN202601089U Petroleum drilling tool embedded sign
12/12/2012CN202596774U Connecting sleeve assembly and blowout preventer
12/12/2012CN202596602U Casing pipe strengthening device
12/12/2012CN202596601U Wellhead support pipe device
12/12/2012CN202596600U Buckle protector for downhole hydraulic control tube
12/12/2012CN202596599U Enhanced structure for welded type weighted drill rod welding head
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