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)
06/2012
06/13/2012CN202273599U 花键钻杆 Spline drill
06/13/2012CN102498259A Downhole intervention
06/13/2012CN102498258A Production riser
06/13/2012CN102493798A Control method for halting drill pipe of piling machine on fixed point and drill pipe
06/13/2012CN102493771A Rolling ball resistance reduction device
06/13/2012CN102493763A Robot imitating earthworm to penetrate into earth
06/13/2012CN102493438A Continuous multi-shaft cement mixing pile device and construction method
06/13/2012CN101522512B Loading system
06/12/2012US8196681 Earth boring device
06/12/2012US8196669 Method of drilling a wellbore
06/12/2012US8196666 Flexible riser and method for pulling-in and hanging up thereof
06/12/2012US8196654 Expandable centralizer for expandable pipe string
06/07/2012WO2012075021A1 Contamination resistant connecting system and method
06/07/2012WO2012074984A2 Tapered thread configuration with improved durability
06/07/2012WO2012074928A2 Bottom preventer for use in a drilling system
06/07/2012WO2012074409A1 Device for handling hoses of a working well for a drilling rig
06/07/2012WO2012072734A1 Coupling, in particular for connecting anchor rods
06/07/2012WO2012071667A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly
06/07/2012WO2012047431A3 Orientable eccentric downhole assembly
06/07/2012US20120141194 Sucker Rod End Fittings and Method of Using Same
06/07/2012US20120138368 Bottom preventer for use in a drilling system
06/07/2012US20120138298 Methods and apparatus for wellbore construction and completion
06/07/2012US20120138289 Downhole centraliser
06/07/2012US20120138288 Rigid centralizer
06/07/2012CA2819776A1 Composite pipe
06/07/2012CA2819639A1 Bottom preventer for use in a drilling system
06/07/2012CA2819180A1 Contamination resistant connecting system and method
06/07/2012CA2818048A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly
06/06/2012EP2459918A1 System, method and apparatus for subsea installation of buoyancy modules
06/06/2012EP2459837A1 Earth drilling machine
06/06/2012EP2459836A1 A cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto
06/06/2012EP2167783B1 Threaded element of a component with opposed threading portions and corresponding tubular threaded connection
06/06/2012EP2049805B1 Twin fin fairing
06/06/2012DE102010053048A1 Double pipe drilling strand valve has outer sleeve and inner sleeve, where outer sleeve is connected at two axial ends with outer pipe of double pipe drilling strand
06/06/2012CN202266241U 增液助抽器 Assisted by liquid pumping device
06/06/2012CN202266202U 一种防偏磨空心抽油杆 An anti-bias hollow rod mill
06/06/2012CN202266201U Sleeve floating coupler
06/06/2012CN202266200U 油管螺纹连接结构 Tubing threaded connection
06/06/2012CN202266199U Hydraulic inner barrel lifting sub
06/06/2012CN202266198U Retractable expansion tube connection sealing device
06/06/2012CN202266197U 高效抗内压摩擦焊坑道钻杆 Pressure within the highly active anti-friction welding drill pipe trenches
06/06/2012CN102486083A Well drilling corrector
06/05/2012US8191640 Universal pump holddown system
06/05/2012US8191639 Downhole swivel sub
06/01/2012CA2757349A1 A downhole centraliser
05/2012
05/31/2012WO2012047910A3 Tension buoyant tower
05/31/2012US20120132434 Production Riser
05/31/2012US20120132433 Safety joint and riser
05/31/2012US20120132432 Gas Handler, Riser Assembly, and Method
05/30/2012EP2458134A2 Cleaning device for underground use in bore hole completion for deep drilling
05/30/2012EP2458133A2 Multifunction downhole release tool mechanism with lost motion
05/30/2012EP2458132A2 Gas handler, riser assembly, and method
05/30/2012EP2456948A2 Wired conduit segment and method of making same
05/30/2012EP1784599B1 Threaded joint for steel pipes
05/30/2012CN202250035U Flexible insulating short joint
05/30/2012CN202250019U Novel elevation angle six-way joint
05/30/2012CN202249993U Three-stage three-section back-washing well inserting seal sleeve protected separate injection tubing string
05/30/2012CN202249875U Deposition type desander
05/30/2012CN202249826U Short spiral drilling tool with built-in safety protection device
05/30/2012CN202249825U Outburst coal seam group crossing drilling device
05/30/2012CN202249824U Ball bar type universal shaft
05/30/2012CN202249823U Asymmetrical unbalanced centralizing strip drill collar
05/30/2012CN202249822U High-efficiency wear-resistant lengthened drill collar
05/30/2012CN202249821U High-efficient and wearing-resistant nonmagnetic drill collar
05/30/2012CN202249820U High-efficient wear-resistant lengthened pressure-reducing centralizer
05/30/2012CN202249819U Double-protection-rod-pipe wear resistance device
05/30/2012CN202249818U Oil pipe centralizer
05/30/2012CN202249817U Guide apparatus of pipelines for wells
05/30/2012CN202249816U 8TPI thread structure
05/30/2012CN202249815U Tooth-shaped buckle for petroleum case pipe joint
05/30/2012CN202249814U Quick-connection pin structure of drill rod
05/30/2012CN202249813U Drilling tool adapter
05/30/2012CN202249812U Drill rod capable of directional drilling and signal transmission
05/30/2012CN202249811U Oil drill pipe joint with high sealing performance and high strength
05/30/2012CN202249810U Novel threaded-connection petroleum drill rod joint with double shoulders
05/30/2012CN202249809U Drilling well control pressure test joint
05/30/2012CN202249808U Stainless steel underground oil pipe with glass reinforced plastic liner
05/30/2012CN202249807U Universal guide device for sucker rod
05/30/2012CN202249806U High tightness and high pressure resistant double guide tap
05/30/2012CN202249805U Anti-tripping connecting device for hollow sucker rod
05/30/2012CN202249804U Tubing head without well control for dragging operation
05/30/2012CN202249803U Intelligent petroleum drill pipe joint capable of power and signal transmission
05/30/2012CN202249802U Water isolation pipe joint
05/30/2012CN202249801U Composite wear-resistant coupling
05/30/2012CN202249800U Anti-corrosion oil pipe
05/30/2012CN202249799U Labeling structure of drilling tool
05/30/2012CN202249798U Limit sucker rod
05/30/2012CN202249761U Ultra-short stabilizer
05/30/2012CN202249737U Rotary core drill
05/30/2012CN102482923A Metal-to-metal annulus seal arrangement
05/30/2012CN102482922A 一种具有分布式悬垂弯曲压载物的柔性悬链形提升管 Flexible catenary curved shape having a distributed ballast hanging risers
05/30/2012CN102482921A 钻杆和对应的钻杆柱 Drill pipe and drill string corresponding
05/30/2012CN102477853A 一种在配水器上保证流量测调精度的方法及其装置 A guaranteed water distribution on the accuracy of flow measurement method and apparatus tune
05/30/2012CN102477848A 一种改善油井维护的工艺方法 A process for improving the well maintained
05/30/2012CN102477750A 填埋场防渗层hdpe膜漏洞修补方法和装置 Landfill hdpe membrane impermeable layer method and apparatus for bug fixes
05/30/2012CN101921963B JLG105 steel stage oil drillpipe and production process thereof
05/30/2012CN101921952B Electric resistance welding petroleum casing pipe
05/30/2012CN101644145B Novel spiral drill rod
05/30/2012CN101644142B Self-lubricating thread of oil well pipe
05/30/2012CN101397898B Eccentric wear prevention method for pumping well with pole
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