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)
11/2012
11/14/2012CN202531041U Polytetrafluoroethylene high-temperature resistant coated drill rod
11/14/2012CN202531040U Polyvinyl fluoride high-temperature coating sucker rod
11/14/2012CN202531039U Teflon high-temperature-resistant coating oil tube
11/14/2012CN202531038U Anti-paraffin and anti-abrasion sucker rod with strong magnetism
11/14/2012CN202531037U Segregated completion tubular column of bottom water tight gas reservoir horizontal well
11/14/2012CN202531036U Negative pressure flow string for oil well
11/14/2012CN202531035U Water injection string of flexible composite tubing
11/14/2012CN202531034U A drill pipe with a built-in cylinder
11/14/2012CN202531019U Multi-blade cutting hydraulic hole enlarging drilling machine
11/14/2012CN102782245A Tapered spline connection for drill pipe, casing and tubing
11/14/2012CN102777162A Oriented fracturing device for horizontal well
11/14/2012CN102777135A Expanding drill and pile forming method
11/14/2012CN102777134A Efficient spiral coal electric drilling rod and preparation method thereof
11/14/2012CN102777133A Cone drilling machine stable rod device
11/14/2012CN102777132A Steel pipe coupling of buttress buckle type thread
11/14/2012CN102777131A Quick-connection clamping hoop of well cementation cement head
11/14/2012CN102777130A Anti-corrosion wear-resistant sucker rod
11/14/2012CN102777129A High-strength sucker rod
11/14/2012CN102776881A Recyclable post-tensioned prestressing anchor cable pile and construction method thereof
11/14/2012CN102776057A Self-lubricating composite material and preparation method thereof
11/14/2012CN102248205B Quick transition joint
11/14/2012CN102011557B Special screw thread joint of high air-tight seal oil sleeve
11/14/2012CN101730784B Disconnectable riser-mooring system
11/14/2012CN101484658B Coupling for dual member pipe
11/08/2012WO2012151146A2 Single upset landing string running system
11/08/2012WO2012091981A3 Boron shaped charge
11/08/2012US20120279725 Expandable Tubular Centralizer
11/08/2012US20120279719 Internal drilling riser centralizer
11/08/2012DE102011100358A1 Device for lead-through of vertical, inclined or horizontal bores in ground, has horizontally placed drill pipe and devices for coupling or decoupling individual drill pipes, for lifting or lowering or pulling or sliding drill pipe
11/08/2012DE102011100186A1 "Gestänge und Vorrichtung zum grabenlosen Sanieren von Rohrleitungen" "Linkage and apparatus for grave loose renovation of pipelines"
11/08/2012CA2834857A1 Single upset landing string running system
11/07/2012EP2520839A2 Temperable pipe for offshore applications
11/07/2012EP2520757A2 A method for connecting two coupling parts of a subsea coupling arrangement to each other
11/07/2012EP2519764A1 An unbonded, flexible pipe
11/07/2012EP2519706A2 Drive pin support
11/07/2012CN202520260U Sediment pressure-maintaining storage device matched with deep sea drilling machine
11/07/2012CN202520247U Clamping tile type oil pumping well polish rod centering device
11/07/2012CN202520246U Uncoupling device for large-diameter long-plunger oil pump
11/07/2012CN202520245U Low-pressure hammer union four-in-one set
11/07/2012CN202520244U Direct connecting type coupling-free casing
11/07/2012CN202520243U Slip bite-resistant drill pipe
11/07/2012CN202520242U Paint-dipping drying package production line of sucker rod
11/07/2012CN202520228U Integrated concentric overburden drilling tool
11/07/2012CN202520227U Eccentric follow drilling tool for impact device with high wind pressure
11/07/2012CN102767340A Multiphase flow regulation device and method for restraining slug flow by utilizing same
11/07/2012CN101558215B Drill pipe with tool joints
11/06/2012US8302708 Rotational drill wrenches and drilling apparatuses including the same
11/06/2012US8302703 Method and apparatus for hydraulic steering of downhole rotary drilling systems
11/01/2012WO2012149272A2 Downhole tools having mechanical joints with enhanced surfaces, and related methods
11/01/2012WO2012149241A2 Downhole release joint
11/01/2012WO2012149080A2 Marine subsea riser systems and methods
11/01/2012WO2012148979A2 Systems and methods for making subsea fluid conduit connections
11/01/2012WO2012146732A1 A tool string
11/01/2012WO2012146727A1 Downhole casing system
11/01/2012WO2012109205A3 Nano-coatings for articles
11/01/2012WO2012023043A3 High load universal joint for downhole rotary steerable drilling tool
11/01/2012WO2011110813A3 Cablehead
11/01/2012US20120273238 Jacking units and bellows for down hole intervention tools
11/01/2012US20120273233 Drill string components resistant to jamming
11/01/2012US20120273213 Marine subsea riser systems and methods
11/01/2012CA2834476A1 A tool string
11/01/2012CA2834473A1 Downhole casing system
11/01/2012CA2832785A1 Improved limit collar
10/2012
10/31/2012EP2518258A1 Downhole casing system
10/31/2012EP2518257A1 A tool string
10/31/2012EP2517306A1 Connecting head for connecting a cable and a downhole tool and associated intervention device
10/31/2012EP2516910A2 Galling-resistant threaded tubular component, and process of coating said component
10/31/2012EP2516789A1 Drilling a borehole and hybrid drill string
10/31/2012EP2516787A1 Method of drilling and jet drilling system
10/31/2012EP2516288A1 Wellbore pipe protection device
10/31/2012CN202510052U Spiral drill rod
10/31/2012CN202510051U Novel polished rod righting auxiliary device
10/31/2012CN202510050U Casing thread butting inner centralizer
10/31/2012CN202510049U Polish rod centring device
10/31/2012CN202510048U Sleeve thread butted joint external centralizer
10/31/2012CN202510047U Pressing plate type drill rod supporting rubber block fixing device
10/31/2012CN202510046U Improved petroleum drill stem joint with special thread
10/31/2012CN202510045U Drilling tool applicable to drilling of deviated well section of horizontal well
10/31/2012CN202510044U 钻杆及旋挖钻机 Drill and rotary drilling rig
10/31/2012CN202510043U Downhole oil production device with non-metallic sucker rod
10/31/2012CN202510042U Layering acidification tubular column in sand prevention tube in water injection well of oil field
10/31/2012CN202510041U Battery box pallet lock nose structure for automobile
10/31/2012CN202510031U Drill bit and drilling equipment
10/31/2012CN102762813A Downhole tool releasing mechanism
10/31/2012CN102762812A Apparatus, system and method for releasing fluids from a subsea riser
10/31/2012CN102758599A Separate mining and combined mining pipe column for sieve pipe well completion horizontal well and mining method thereof
10/31/2012CN102758591A Screw-on guider for coiled tubing drilling tool
10/31/2012CN102758590A Migration preventing and fixing device of sleeve
10/31/2012CN101979817B Ditrigonal centralizer
10/30/2012USRE43773 Drilling quick connectors
10/30/2012US8297380 Casing and liner drilling shoes having integrated operational components, and related methods
10/30/2012US8297363 Device and method for improving liquid removal from gas, condensate and oil wells when using a multi-channel system
10/29/2012DE202011050823U1 Leitungselement Line element
10/26/2012WO2012145488A2 System and method for deploying a downhole casing patch
10/26/2012WO2012145160A2 Galvanically isolated exit joint for well junction
10/26/2012WO2012143672A2 Hybrid riser system
10/26/2012WO2012143671A2 Subsea conduit system
10/26/2012WO2012142891A1 Method and system for improving drilling speed by using drill string vibration
10/26/2012WO2012092029A3 Drill rod guide
10/26/2012WO2012032485A3 Shank adapter with corrosion protection
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