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)
09/2010
09/02/2010CA2753514A1 Centralising core orientation apparatus
09/01/2010EP2224092A2 Wired pipe with wireless joint transceiver
09/01/2010EP2222934A1 Elevator for gripping and lifting a riser joint
09/01/2010EP1583886B1 Isolated electrical connection in a drill string
09/01/2010CN201568027U Non-well-killing rod inspection operation device of pumping well
09/01/2010CN201568016U Hole drilling and well drilling intercept type leak stoppage tool
09/01/2010CN201567995U Positive inverted back-off device assembly
09/01/2010CN201567983U Coal bed gas-well bridge type non-pollution continuous coal ash flushing technological pipe column
09/01/2010CN201567976U Coal drill stem of small diameter and big pitch
09/01/2010CN201567975U Self-lubricating attached covering type sucker rod eccentric wearing resistance centralizer
09/01/2010CN201567974U Pumping rod centralizer
09/01/2010CN201567973U Pumping unit driving wire cable centralizer
09/01/2010CN201567972U Well centralizer for well control simulation
09/01/2010CN201567971U Novel universal shaft for screw drilling tool
09/01/2010CN201567970U Drilling rod connector of coal drilling machine
09/01/2010CN201567969U Drill rod of drilling machine
09/01/2010CN201567968U Drilling rod coating layer structure
09/01/2010CN201567967U Pressure blocks for rotary digging drill rod and lock drill rod with pressure blocks
09/01/2010CN201567966U Safety device capable of preventing drills of rotary drilling rigs against falling into pile holes
09/01/2010CN201567960U Floating casing pipe installing pipe series
09/01/2010CN101342551B Sucker rod flattener
09/01/2010CN101135234B Screw pump flow string trip preventer
08/2010
08/31/2010US7784550 Downhole apparatus with a swellable connector
08/31/2010US7784537 Control line protector
08/31/2010CA2579647C Control systems and methods for active controlled bottomhole pressure systems
08/31/2010CA2462071C Multi-purpose coiled tubing handling system
08/26/2010WO2010096206A2 Apparatus and method for controlling the connection and disconnection speed of downhole connectors
08/26/2010WO2010095998A1 A start kit, a casing tube and a starter rod for drilling equipments for percussive rock drilling
08/26/2010US20100212970 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
08/26/2010US20100212969 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
08/26/2010US20100212968 Method and Apparatus for Vacuum Collecting and Gravity Depositing Drill Cuttings
08/26/2010US20100212769 Composite spoolable tube
08/25/2010EP2220333A1 Flexible pipe support
08/25/2010EP1792052B1 Integrated magnetic ranging tool
08/25/2010CN201560728U Device capable of leading racking platform of oil rig to move freely
08/25/2010CN201560724U Roller type low-friction resistance rigid casing centralizer
08/25/2010CN201560723U Oil pipe thread wear reducing device
08/25/2010CN201560722U Anti-bias wear oil pumping rod centralizer
08/25/2010CN201560721U Maintenance-free and anti-loosening insulating pup joint
08/25/2010CN201560720U Novel bit shank sleeve and corresponding drilling device
08/25/2010CN201560719U Mine pipeline connector
08/25/2010CN201560718U Construction tube
08/25/2010CN1784533B Roller assembly
08/25/2010CN101812976A Adjustable multiple coil extruding and expanding drilling tool
08/25/2010CN101812975A Anti-icing conductor tube composite structure
08/25/2010CN101812969A Full-capacity eccentric bearing for extracting underground deviation correcting energy
08/25/2010CN101357381B Flight winding machine
08/24/2010US7779938 Swivel for use in installing large diameter casing
08/24/2010US7779935 Mechanically engaged and releasable connection system
08/24/2010US7779934 Flexible/rigid drilling assembly
08/24/2010US7779932 Drill-string shock absorbers
08/24/2010US7779907 Downhole shock absorber with crushable nose
08/19/2010WO2010093878A2 Expandable casing with enhanced collapse resistance and sealing capability
08/19/2010WO2010092348A2 Connector seal
08/19/2010WO2010092326A1 A swivel joint
08/19/2010WO2010092313A1 Offset stochastic control
08/19/2010US20100206585 Expandable Casing With Enhanced Collapse Resistance and Sealing Capability
08/19/2010US20100206582 Control line hybrid junction assembly
08/19/2010US20100206574 Well Intervention System
08/19/2010US20100206561 Apparatus and Method for Controlling the Connection and Disconnection Speed of Downhole Connectors
08/19/2010US20100206553 Coated oil and gas well production devices
08/19/2010CA2749692A1 Offset stochastic control
08/18/2010EP2035648B1 Polymer matrix reinforced stiffening element and method of producing the same
08/18/2010CN201554447U Logging hard electrode stabilizer
08/18/2010CN201554419U Large channel water-plugging tubular column
08/18/2010CN201554418U Water irruption-resistant boring device and drilling machine therewith
08/18/2010CN201554401U Hydraulic slag discharge device for drilling of deep anchor rod hole of tunnel base plate
08/18/2010CN201554396U Device enabling racking platform of oilrig derrick to follow top floor of base
08/18/2010CN201554395U Forble board with function of fastening fourbles
08/18/2010CN201554394U Thribble board of lock tribble with lock device
08/18/2010CN201554388U Improved auger stem
08/18/2010CN201554387U Corrosion-resisting grinding deviation prevention device for oil extraction rod
08/18/2010CN201554386U Safety joint
08/18/2010CN201554385U Rotary joint of circulating mud pipe of drilling pile machine
08/18/2010CN201554384U Universal joint of drill stem
08/18/2010CN201554383U Drill rod connecting device for hydraulic slag discharge in drilling of deep anchor rod hole of tunnel base plate
08/18/2010CN201554382U Turning bar connecting device of drilling pile machine
08/18/2010CN201554381U Sand-blasting thread protector of drilling tool connector
08/18/2010CN201554380U Threaded connection structure of oil well pipe
08/18/2010CN201554379U Novel roadway floor bolt-hole deep-drilling hydraulic slag discharge drill pipe
08/18/2010CN201554378U Sealing protection sleeve for oil extraction rod of oil extractor
08/18/2010CN201554372U Lower drilling tool combination for flexible combination drill
08/18/2010CN201554371U Horizontal well completion pipe string
08/18/2010CN201554370U Four-in-one drilling tool structure with three centering devices
08/18/2010CN1924284B Device for staging actions prevention for underwell hydraulic tools
08/18/2010CN1777736B Well string assembly
08/18/2010CN101806197A Air-sealed saw-tooth threading connector and oil bushing and connecting hoop using same
08/18/2010CN101806196A Compound rotary drilling rig drilling mechanism
08/18/2010CN101805659A Water base lubricating agent used for eccentric wear prevention of oil well
08/18/2010CN101250977B Drilling unit head of deep sea drill core sampling drilling machine
08/18/2010CN101173607B Disjointing controllable multi-layer fracturing tubular pile device of sandblaster and method for controlling disjointing
08/17/2010US7775559 Apparatus to mechanically load a compression member
08/17/2010US7775302 Casing shoe and retrievable bit assembly
08/17/2010US7775272 Passive centralizer
08/17/2010US7775099 Downhole tool sensor system and method
08/17/2010CA2426076C Coupling apparatus
08/17/2010CA2387881C Method and apparatus for operations in underground subsea oil and gas wells
08/12/2010WO2010090531A1 Trigger joint
08/12/2010WO2009143300A4 System and method for providing a downhole mechanical energy absorber
08/12/2010US20100200302 Digging tool, digging bit, and device
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