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)
05/2012
05/30/2012CN101343991B Well completion method of single inner diameter well completion structure
05/29/2012US8186911 Power umbilical comprising separate load carrying elements of composite material
05/29/2012US8186685 Seal
05/29/2012US8186459 Flexible hose with thrusters and shut-off valve for horizontal well drilling
05/29/2012US8186429 Wellbore method and apparatus for completion, production and injection
05/29/2012CA2681868C Riser rotating control device
05/29/2012CA2491300C Dovetail thread coupling for expandable tubulars
05/29/2012CA2483244C Drill string shutoff valve
05/24/2012WO2012067669A1 Remote operation of a rotating control device bearing clamp and safety latch
05/24/2012WO2012067628A1 Remote operation of a rotating control device bearing clamp
05/24/2012WO2012067627A1 Remote operation of a rotating control device bearing clamp
05/24/2012WO2012067516A1 A rod suitable for being inserted into a deviated wellbore and a method of manufacturing the same
05/24/2012WO2012066250A1 Tower for exploiting fluid in an expanse of water and associated installation method
05/24/2012WO2012065934A1 Navigation system
05/24/2012WO2012065295A1 System and method for gas drainage and outburst prevention in coal seam by drill-cut linkage of long drilling hole and high pressure water jet
05/24/2012WO2012065259A1 Kobe sub, wellbore tubing string apparatus and method
05/24/2012WO2012065218A1 A segmented riser bundle
05/24/2012US20120125689 Drill Pipe Tubing and Casing Protector
05/24/2012US20120125619 Active external casing packer (ecp) for frac operations in oil and gas wells
05/24/2012CA2817862A1 Navigation system
05/24/2012CA2817777A1 Kobe sub, wellbore tubing string apparatus and method
05/24/2012CA2816790A1 A rod suitable for being inserted into a deviated wellbore and a method of manufacturing the same
05/24/2012CA2813732A1 Remote operation of a rotating control device bearing clamp
05/24/2012CA2798801A1 Remote operation of a rotating control device bearing clamp and safety latch
05/24/2012CA2727754A1 An improved seal between pipes
05/23/2012EP2454444A2 Downhole intervention
05/23/2012EP2454443A2 Production riser
05/23/2012EP2454442A1 Oil pipe suspension device, and installation method
05/23/2012CN202228056U Four-stage four-section separated-injection pipe column protected by inserted sealing jacket and capable of backwashing well
05/23/2012CN202228040U Pipe string for separate-zone production of thin oil
05/23/2012CN202228005U Spiral anti-torsion drill collar for oil drilling
05/23/2012CN202228004U Protector for tubing hanger
05/23/2012CN202228003U Oil drill pipe connector with higher torsional strength
05/23/2012CN202228002U Double-step drill pipe joint
05/23/2012CN202228001U High-antitorque lifting short joint of drill pipe
05/23/2012CN202228000U Direct connection type sleeve pipe
05/23/2012CN202227999U Cable connector
05/23/2012CN202227998U Core section rod of drill rod
05/23/2012CN202227997U Novel welded type weight-increasing drill pipe
05/23/2012CN202227985U Vertical drilling tool
05/23/2012CN1807827B Method and apparatus for high precision horizontal drilling on reinforced concrete
05/23/2012CN102465673A 一种旋挖钻机的万向接头 One kind of rotary drilling rig universal joint
05/23/2012CN102465672A 一种大位移井套管柱的三轴应力强度设计方法 Triaxial strength design method for large displacement of the well casing string
05/23/2012CN102465671A 一种直井套管柱的三轴应力强度设计方法 A vertical well triaxial stress intensity casing string design methods
05/23/2012CN102465668A 一种旋转摆动导向钻井工具 A rotary steerable drilling tool swing
05/23/2012CN102465664A 一种自动清土机 An automatic clearing Graders
05/23/2012CN101629476B High strength and high toughness petroleum casing pipe capable of bearing low temperature within -40 to -80 DEG C
05/22/2012US8182353 Bottom roller drive for deep soil mixing system
05/22/2012US8181722 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
05/22/2012US8181717 Power tool with battery pack ejector
05/22/2012US8181700 System and method of displacing fluids in an annulus
05/22/2012CA2562823C Pipe coupling and method for installation
05/22/2012CA2547853C High-strength sealed connection for expandable tubulars
05/18/2012WO2012064380A2 Gasket test protector sleeve for subsea mineral extraction equipment
05/18/2012WO2012063036A2 Riser assembly and method
05/18/2012WO2012063035A2 Riser support
05/18/2012CA2814792A1 Riser assembly and method
05/18/2012CA2814788A1 Riser support
05/17/2012US20120118423 Fiber Reinforced Spoolable Pipe
05/16/2012EP2453107A1 Navigation system
05/16/2012EP2134997B1 Super high torque dope-free threaded joint
05/16/2012CN202220599U Novel lathe dog
05/16/2012CN202220597U Measurement pipe nipple for drilling pressure and torque while drilling
05/16/2012CN202220566U Wired communication screw
05/16/2012CN202220565U Radioactive source cabin and drill collar with same
05/16/2012CN102459803A 双旋转钻孔扶正器 Dual rotary drilling centralizers
05/16/2012CN102454381A Oil-gas reservoir barefoot well cementing and completion method and device
05/16/2012CN102454371A Overpull indicator
05/16/2012CN102454370A Constant-pressure protection device of screw drilling tool
05/16/2012CN102454369A System for remediating a wellbore annulus
05/16/2012CN102454368A Telescopic drill rod and cast-in-situ cylindrical pile rotary drilling machine with same
05/16/2012CN102454367A Power and signal transmission drill stem
05/16/2012CN102453407A Anti-galling coating for oil sleeve joint and coating method thereof
05/16/2012CN101696621B Air-tight seal screw joint
05/15/2012US8176977 Method for rapid sealing of boreholes
05/15/2012US8176971 Earth heat transfer loop apparatus
05/15/2012CA2602473C Drill stem connection
05/10/2012WO2012060920A1 Apparatus and method for reducing the residual bending and fatigue in coiled tubing
05/10/2012WO2011104516A3 Pressure-activated valve for hybrid coiled tubing jointed tubing tool string
05/10/2012US20120111640 Downhole drilling assembly
05/10/2012US20120111634 Earth boring apparatus
05/10/2012US20120111555 Wired drill pipe with improved configuration
05/10/2012CA2814590A1 Parameter sensing and monitoring
05/09/2012EP2450676A1 Device for measuring the characteristics of a flow within a pipe
05/09/2012EP2450608A1 Method of monitoring fluid flow within a flexible pipe
05/09/2012EP2449204A2 Hydraulically locking stabilizer
05/09/2012CN202215239U Insulated pipe nipple
05/09/2012CN202215229U Insulating pup joint for underground mine drilling
05/09/2012CN202215224U Connector for CO2 gas mining devices
05/09/2012CN202215220U Concentric type lamination steam driving underground process tubular column
05/09/2012CN202215200U Control tubular column for liquid quantitative injection
05/09/2012CN202215190U Hole-sealing connecting rod for CO2 gas exploitation device
05/09/2012CN202215171U Drilling cutting collector
05/09/2012CN202215165U Bend preventing device for polish rod of oil-pumping well
05/09/2012CN202215164U Novel petroleum surface casing
05/09/2012CN202215163U Durable drill rod connector with ultra high torsional strength
05/09/2012CN202215162U Sucker rod coupling
05/09/2012CN202215161U Drill column friction and resistance preventing joint
05/09/2012CN202215160U Drill column friction and resistance preventing joint for reducing axial friction of drill column
05/09/2012CN202215159U Safety shock-absorbing connector of measure while drilling (MWD) vertical pipe pressure sensor
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