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)
12/2003
12/18/2003US20030230409 Instrumentation assembly for an offshore riser
12/17/2003EP1371810A1 Anti-rotation device for use in a borehole
12/17/2003EP1226329B1 Drill string member with bearings
12/17/2003CN2592853Y Large-displacement well-flushing packer
12/17/2003CN2592849Y Pressure spring type deviation-rectifying centralising device for geological drilling
12/17/2003CN2592848Y Bridge leaking stoppage tubular column
12/17/2003CN2592847Y Underground tubular column retracting balance apparatus
12/17/2003CN1461871A Joint for wire pipe with current loop inductive coupler
12/17/2003CN1461870A Continous sucker rod made of fiber reinforced composition and its making method
12/16/2003US6663453 Buoyancy control systems for tubes
12/16/2003US6662875 Induction choke for power distribution in piping structure
12/11/2003WO2003102373A1 Apparatus for installation of rock bolts
12/11/2003WO2003102358A1 Multi-catenary type rising column
12/11/2003WO2003102357A1 Flowline insulation system
12/11/2003WO2003102356A1 Securing arrangement for reamers in raise boring
12/11/2003WO2003006784A8 Roller sub
12/11/2003US20030227393 Wireless power and communications cross-bar switch
12/11/2003US20030226693 Fracture and wear resistant compounds and rock bits
12/11/2003US20030226665 Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones
12/11/2003CA2486108A1 Securing arrangement for reamers in raise boring
12/10/2003EP1198658B1 Method of creating a weld in a wellbore
12/10/2003CN2591213Y Fixed friction-reducing joint
12/09/2003US6659741 Travelling valve assembly for a fluid pump
12/09/2003US6659690 Tapered stress joint configuration
12/09/2003US6659509 Threaded joint for steel pipes
12/09/2003US6659205 Rock drill
12/09/2003US6659200 Actuator assembly and method for actuating downhole assembly
12/09/2003US6659173 Downhole tool
12/09/2003CA2207648C Method and apparatus for drilling with high-pressure, reduced solid content liquid
12/04/2003WO2003010411A3 Method and apparatus for air can vent systems
12/04/2003US20030222455 Expandable connector
12/04/2003US20030222409 Non-rotating expandable connection with collapsing type seal
12/04/2003US20030221872 Profiled element for rotary drilling equipment and applications to components of a string of drill pipes
12/04/2003US20030221838 Well stimulation tool and method of using same
12/04/2003US20030221829 Well communication system
12/04/2003US20030221519 Methods and apparatus for connecting tubulars while drilling
12/04/2003US20030221472 Well casing and method for threading
12/03/2003EP1367216A2 Wired pipe joint with current-loop inductive couplers
12/03/2003CN2589662Y Under balance drilling mine pore flow guiding anti-overflow pipe
12/03/2003CN2589661Y Anti-blocked uniflow joint
12/03/2003CN2589660Y Connecting device of reinforced concrete motor-pumped deep well
12/03/2003CN2589659Y Drill string built-up construction having waterpower pressurizer
12/03/2003CN1460145A Step tube drilling rod and drilling machine
12/03/2003CN1129728C Oil well pipe
12/02/2003US6658186 Cable arrangement
12/02/2003US6655478 Row of cutting elements disposed on roller cone defines a gage row, toughness
12/02/2003US6655477 Friction-reducing drill pipe component
12/02/2003US6655464 Auto-extending/retracting electrically isolated conductors in a segmented drill string
12/02/2003US6655459 Completion apparatus and methods for use in wellbores
12/02/2003CA2213397C Catenary riser support
12/02/2003CA2198163C High pressure casing patch
12/02/2003CA2075900C Down-the-hole drill tool for drilling in advance of a casing tube
11/2003
11/27/2003WO2003098639A1 Method and apparatus for mwd formation testing
11/27/2003WO2003098087A1 Tubular goods and liners
11/27/2003WO2003097991A1 A thread joint for a drill string for percussive rock-drilling
11/27/2003WO2003097990A1 Riser system connecting two fixed underwater installations to a floating surface unit
11/27/2003WO2003097987A2 A device for a long well tool
11/27/2003US20030217886 Apparatus for detecting geophysical energy
11/27/2003US20030217868 Single cone rock bit having inserts adapted to maintain hole gage during drilling
11/27/2003US20030217843 Tubular filling system
11/27/2003CA2714872A1 Downhole oilfield tubulars having liners with diffusion barrier layer
11/26/2003EP1365183A1 Threaded joint for steel pipe with excellent seizure and corrosion resistances
11/26/2003CN2588041Y Short-section type corrosion-resisting device for oil pipe
11/26/2003CN2588040Y One-direction pressure-fixed joint
11/26/2003CN2588039Y Oil releasing device for oil pipe
11/26/2003CN1458384A Improved pipeline installed with electric connection wire insert pipeline
11/25/2003US6651744 Bi-directional thruster pig apparatus and method of utilizing same
11/20/2003WO2003095794A1 Multiple zone downhole intelligent flow control valve system and method for controlling commingling of flows from multiple zones
11/20/2003WO2003095788A1 Seafloor/surface connecting installation for a submarine pipeline which is connected to a riser by means of at least one elbow pipe element that is supported by a base
11/20/2003WO2003062582A3 Disengageable downhole tool
11/20/2003WO2002075164A3 Flexible joint for well logging instruments
11/20/2003WO2002055331A3 Sectional drive system
11/20/2003US20030213620 Apparatus for transferring electrical energy between rotating and non-rotating members of downhole tools
11/20/2003US20030213601 Downhole seal assembly and method for use of same
11/20/2003US20030213598 Tubing containing electrical wiring insert
11/20/2003US20030213596 Tubular goods and liners
11/20/2003US20030213113 Apparatus and methods for remote installation of devices for reducing drag and vortex induced vibration
11/19/2003EP1362977A2 Tubing containing electrical wiring insert
11/19/2003EP1362203A1 Improved tubing coupling
11/19/2003EP1362161A1 Seafloor-surface connecting installation of a submarine pipeline installed at great depth
11/19/2003EP1362159A1 Shoe with earth formation disiplacing structure
11/19/2003EP1362158A1 Method and apparatus for operations in underground/subsea oil and gas wells
11/19/2003CN1457413A Screw threaded joint for continuous-profile tubes
11/18/2003US6648081 Subsea wellbore drilling system for reducing bottom hole pressure
11/18/2003US6648071 Apparatus comprising expandable bistable tubulars and methods for their use in wellbores
11/13/2003WO2003093635A1 Selectively operational cleaning tool
11/13/2003WO2003093628A1 Remote operated coil connector apparatus
11/13/2003WO2003093627A1 Flexible riser system
11/13/2003WO2003093626A1 Stabilizing system and methods for a drill bit
11/13/2003WO2003071084A3 System for forming a window and drilling a sidetrack wellbore
11/13/2003WO2003036030A3 In situ thermal processing and upgrading of produced hydrocarbons
11/13/2003US20030211768 Prb with tec bypass and wet disconnect/connect feature
11/13/2003US20030209340 Microorganism enhancement with earth loop heat exchange systems
11/12/2003EP1360391A1 A deflection joint
11/12/2003EP1076756B1 Apparatus, system and method for connecting coiled tubing to a member
11/12/2003CN2585966Y Anti-dropping damping rod
11/12/2003CN2585965Y Glass fiber reinforced plastic insulation short tube for oil well
11/12/2003CN2585964Y Drive rod of screw pump
11/12/2003CN2585963Y Small borehole bushing
11/11/2003US6644894 Passive apparatus and method for reducing fluid induced stresses by introduction of energetic flow into boundary layer around structures
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