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)
08/2012
08/07/2012US8235148 Thread retention for an earth boring device
08/07/2012US8235127 Communicating electrical energy with an electrical device in a well
08/07/2012US8235123 Separating device
08/07/2012US8235109 Instrument centralizer configurable for use with cement evaluation well logging instruments
08/07/2012CA2767021A1 Heavy wall steel pipes with excellent toughness at low temperature and sulfide stress corrosion cracking resistance
08/07/2012CA2767004A1 High strength steel pipes with excellent toughness at low temperature and sulfide stress corrosion cracking resistance
08/07/2012CA2617178C Ram style tensioner with fixed conductor and floating frame
08/07/2012CA2552722C Expandable connection
08/06/2012DE202011100196U1 Vorrichtung für Bohrungen im Erdreich Apparatus for drilling holes in the ground
08/02/2012WO2012103018A1 System and method for coupling pipes
08/02/2012WO2012102966A2 Drill string components resistant to jamming
08/02/2012WO2012102804A1 Selective sleeve system and method of moving a sleeve
08/02/2012WO2012101401A2 Composite bow centralizer
08/02/2012WO2012072994A3 Composite pipe
08/02/2012WO2012072993A3 Composite pipe
08/02/2012WO2012040275A3 Step-to-step wedge thread connections and related methods
08/02/2012WO2011067529A3 Assembly for connecting a flexible tubular line to an underwater installation
08/02/2012US20120193148 Non-magnetic drill string member with non-magnetic hardfacing and method of making the same
08/02/2012US20120193106 Recovering heated fluid using well equipment
08/02/2012US20120193089 Sucker Rod Centralizer
08/02/2012DE102011120572A1 Bohrvorrichtung zum Schlag- oder Drehschlagbohren mit Verbindungsmuffe Drilling device for percussion or rotary percussion drilling with connection socket
08/02/2012CA2825533A1 Drill string components resistant to jamming
08/02/2012CA2824917A1 System and method for coupling pipes
08/02/2012CA2824120A1 Composite bow centralizer
08/02/2012CA2824118A1 Composite bow centralizer
08/02/2012CA2754645A1 Sucker rod centralizer
08/01/2012EP2481880A2 Drive shaft constant velocity joint assembly with radial elliptical projections
08/01/2012EP2480758A2 Method and apparatus for determining locations of multiple casings within a wellbore conductor
08/01/2012EP2142836B1 Pressure isolation system for flexible pipe joints
08/01/2012CN202360060U Drill rod decompression valve
08/01/2012CN202360045U An oil pipe compensator
08/01/2012CN202360044U Anti-deflection shaft joint for well drilling
08/01/2012CN202360043U Connecting structure of thin kerf diamond bit and cover plate
08/01/2012CN202360042U Double shoulder highly anti-twisting drill pipe joint
08/01/2012CN202360041U Oil-saving safety quick joint
08/01/2012CN202360040U Integral blowout prevention elbow pipe
08/01/2012CN202360039U Wear-resistant sand-releasing pipe for pneumatic drill
08/01/2012CN202360038U Integral type blowout prevention straight pipe
08/01/2012CN202360037U Anti-collapse porous blocking pipe
08/01/2012CN202360032U Mine refuge monitoring and communication system
08/01/2012CN202359204U Anode protection anticorrosion structure of oil extraction pipe of oil well
08/01/2012CN102619553A Spiral catcher
08/01/2012CN102619500A Power and signal transmission drill stem cable inlet device
08/01/2012CN102619477A Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint
08/01/2012CN102619476A Pipe body structure of step type hole protecting pipe for gas extraction hole in soft coal bed
08/01/2012CN102619475A Alveolate drill stem
08/01/2012CN102619470A Method for controlling transverse vibration of drill string in process of reaming while drilling
08/01/2012CN102618709A Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment
07/2012
07/31/2012US8231308 Hybrid riser tower and method of installation thereof
07/31/2012CA2570628C Casing resonant radial flexural modes in cement bond evaluation
07/31/2012CA2546316C Drill bit with protection member
07/26/2012WO2011117567A3 Support apparatus for elongate member
07/26/2012US20120186881 Drilling fluid recovery when drilling under an obstacle or water body
07/26/2012US20120186826 Intermediate Disconnection Tool to Be Placed in A Shuttle Lowered into A Well for Exploiting A Fluid, and Related Shuttle and Method
07/26/2012US20120186818 Sucker Rod Coupling and Method of Wear Prevention in Driven Rotation of a Sucker Rod String in Production Tubing
07/26/2012US20120186808 Composite Bow Centralizer
07/26/2012US20120186807 Multi-Tasking Rod Guide
07/25/2012EP2479294A1 Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment
07/25/2012EP2478178A1 Riser tensioner
07/25/2012EP2286056B1 Bed-to-surface connector installation of a rigide tube with a flexible duct having positive flotation
07/25/2012CN202348274U Nonmagnetic wearable protective casing
07/25/2012CN202348269U Pressure testing device for oil well casing pipe string
07/25/2012CN202348262U Well-logging shock-absorption quick joint and matched joint thereof
07/25/2012CN202348162U Wear prevention device for petroleum drilling water tap lifting ring
07/25/2012CN202348158U Abrasion-resistant drill collar for petroleum drilling
07/25/2012CN202348157U Eccentric guiding shoe for casing
07/25/2012CN202348156U Anti-attrition sleeve for old drill rod connector
07/25/2012CN202348155U Reusable follow-up wax removal device for oil pumping well tube poles
07/25/2012CN202348154U Rolling wheel type centering device
07/25/2012CN202348153U Reducing drilling stabilizer
07/25/2012CN202348152U Wear-resisting and righting device for deep-well pumps and cables
07/25/2012CN202348151U Anti-collision cushioning protective sleeve of sucker rod
07/25/2012CN202348150U Centralizer for screw drill
07/25/2012CN202348149U Self-rotating rod tube abrasion-resisting device
07/25/2012CN202348148U Oil casing tube with special thread structure
07/25/2012CN202348147U Sealing connecting structure for casing head and casing pipe
07/25/2012CN202348146U Shock absorber for sucker rod
07/25/2012CN202348145U Square head structure for drilling rod of rotary drilling rig
07/25/2012CN202348144U Laser-surface-hardened drill rod joint
07/25/2012CN202348143U Novel drill rod joint thread
07/25/2012CN202348142U Non-excavation power head protective pup joint
07/25/2012CN202348141U Drill pipe joint screw thread with high torsion resistance
07/25/2012CN202348140U Abrasion-resistant coupling for hollow rod
07/25/2012CN202348139U Drilling pipe adapter structure used for petroleum drilling
07/25/2012CN202348138U Anti-fall joint structure of screw drill tool
07/25/2012CN202348137U Eccentric wear resistant sucker rod collar
07/25/2012CN202348136U Multi-functional external guide pipe joint device
07/25/2012CN202348135U Electromagnetic wave pup joint
07/25/2012CN202348134U Locking device for rotating joint
07/25/2012CN202348133U Gas drainage anti-spraying drill rod
07/25/2012CN202348132U Lining plastic wear-resistant anti-corrosion oil pipe
07/25/2012CN202348131U Improved water suction pipe
07/25/2012CN102610074A Mineral wireless data acquisition terminal
07/25/2012CN102606086A Connecting joint with special knuckle threads for oil casing
07/25/2012CN102606085A Axial locking device for drilling rod
07/25/2012CN102606084A 钻杆及旋挖钻机 Drill and rotary drilling rig
07/25/2012CN101936131B Rotary drilling rig
07/25/2012CN101624904B Open hole completion well sand resistant pipe string of sidetracking branch well and inserting type acid cleaning filling inner pipe string thereof
07/25/2012CN101566049B Irregularly shaped multi-land notch groove drill rod
07/25/2012CN101349145B Basalt cable capable of replacing pumping rod made by steel
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