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)
08/2012
08/22/2012CN102642112A Stabilizer and manufacturing method thereof
08/22/2012CN102094197B Plasma cladding method for processing dust-removal-assisting wear-resistant spiral drill stem
08/22/2012CN101387197B Antimagnetic wear resistant jacket for LWD tool
08/21/2012US8245798 Female part and a method for manufacturing female parts
08/21/2012US8245779 Centralizer apparatus
08/21/2012US8245777 Tubing centralizer
08/21/2012US8245775 Wellbore consolidating tool for rotary drilling application
08/21/2012US8245774 Whipstock assembly for forming a window within a wellbore casing
08/21/2012CA2743294C Well tubing drain tool adapted for use with power tongs and method of using same
08/21/2012CA2686472C Riser disconnect and support mechanism
08/21/2012CA2643041C Downhole resettable clutch swivel
08/21/2012CA2540481C Expandable wellbore assembly
08/21/2012CA2516170C A telescopic data coupler
08/18/2012CA2768121A1 Hollow drilling steel rod and method of manufacturing the same
08/16/2012WO2012109205A2 Nano-coatings for articles
08/16/2012WO2012107108A1 Signal and power transmission in hydrocarbon wells
08/16/2012WO2012017065A3 Clamp
08/16/2012US20120205158 Downhole motor bearing assembly with an integrated thrust shock absorber for downhole drilling and method thereof
08/16/2012US20120205118 Workover riser compensator system
08/16/2012US20120205113 Subsurface Safety Valve for High Temperature and High Pressure Wells
08/16/2012US20120205095 Wellbore method and apparatus for completion, production and injection
08/16/2012US20120205094 Wellbore Method and Apparatus For Completion, Production and Injection
08/16/2012US20120205093 Instrument for Centering Tools Within a Wellbore
08/16/2012DE102011010958A1 Steckverbindung und Gestängeschuss für Bohrgestänge Connector and linkage signal for drill pipe
08/16/2012CA2826671A1 Signal and power transmission in hydrocarbon wells
08/16/2012CA2826259A1 Nano-coatings for articles
08/15/2012EP2487323A1 Riser bending relief joint
08/15/2012EP2487321A2 Connector and rod lock for a drilling rod
08/15/2012EP2486223A2 Driven latch mechanism
08/15/2012EP2486222A1 A flexible unbonded oil pipe system with an optical fiber sensor inside
08/15/2012EP1601904B1 Method for producing a threaded tubular connection sealed by radial expansion
08/15/2012EP1532474B1 Marking of pipe joints
08/15/2012CN202381957U Polish rod lubricator of pumping well
08/15/2012CN202381064U Dedicated tool integrated with laminating and fracturing
08/15/2012CN202381057U Simple casing gas recovery device
08/15/2012CN202381053U Rapid joint for tubing convey perforating gun
08/15/2012CN202381050U Antirust downhole string of pumping well and rod string
08/15/2012CN202381044U Downhole injection device of oil-gas field
08/15/2012CN202381034U Low pressure loss type rigid cyclone centralizer
08/15/2012CN202380991U Hexagon drill rod
08/15/2012CN202380990U Pipe shoe self adaptive to stratum environment
08/15/2012CN202380989U Centralizing damping device of tubular column
08/15/2012CN202380988U Ferromagnetic oil pipe thread protection device
08/15/2012CN202380987U Internal-external thread connector of thin-wall expansion pipe
08/15/2012CN202380986U Anti-tripping device for working casing
08/15/2012CN202380985U Tubular air seal thread joint
08/15/2012CN202380984U Upper connector of impacter
08/15/2012CN202380977U Anti-fatigue short joint for gas drilling column
08/15/2012CN102639912A Threaded connection
08/15/2012CN102635318A Screw pile bit with couplings
08/15/2012CN102635317A Anti-burying drill rod during collapse of well wall
08/15/2012CN102635316A Rigid spiral idler centralizer
08/15/2012CN102635315A Joint with hole-repairing drill bit
08/15/2012CN102635314A Connecting method for expandable corrugated pipe
08/15/2012CN101994487B Torsion bearing assembly for transferring torque to drill
08/15/2012CN101906940B Impacting head assembly for ground drills
08/15/2012CN101892813B Drill collar capable of reducing stick slip phenomena
08/15/2012CN101871328B Planetary drill bit assembly for balancing reactive torque of drilling equipment in well drilling
08/15/2012CN101845942B Plug type circuit sealing device
08/15/2012CN101619655B Drilling method for accurately controlling hole deflection under complicated stratum and guide device
08/15/2012CN101581217B Device and method for coal bed gas pressure/content measurement while drilling
08/14/2012US8240401 System and method for damping vibration in a drill string
08/14/2012US8240375 Field joint for a downhole tool
08/14/2012CA2651054C Measurement while drilling tool with interconnect assembly
08/14/2012CA2539668C Steerable drilling system
08/09/2012WO2012106640A2 Connection cartridge for downhole string
08/09/2012WO2012106486A2 Downhole tool actuation
08/09/2012WO2012106039A2 Disconnect devices for downhole strings
08/09/2012WO2012106020A1 Systems and methods for advanced well access to subterranean formations
08/09/2012WO2012104518A1 Curvature limiter for a flexible undersea line, and seabed-to-surface linking equipment including same
08/09/2012WO2011138574A3 Control line protection
08/09/2012US20120201611 Method and apparatus for facilitating hang off of multiple top tension riser or umbilicals from a compensated tensioning deck
08/09/2012US20120199659 Oilfield equipment identification method and apparatus
08/09/2012US20120199400 Drill pipe and corresponding drill fitting
08/09/2012CA2822211A1 Systems and methods for advanced well access to subterranean formations
08/08/2012EP2484859A1 Control line running system
08/08/2012EP2484858A1 Riser bending relief joint
08/08/2012EP2484857A2 Method and apparatus for performing wireline logging operations in an under-balanced well
08/08/2012EP2484784A1 Heavy wall steel pipes with excellent toughness at low temperature and sulfide stress corrosion cracking resistance
08/08/2012EP2483513A1 Pressure control device with remote orientation relative to a rig
08/08/2012EP2313599B1 Guide frame for riser tower
08/08/2012CN202370965U Positioning screw special for outer centralizer for low stress damage type casing pipe
08/08/2012CN202370464U Fixture block type releasing connector
08/08/2012CN202370450U Spiral drill rod
08/08/2012CN202370449U Drill rod
08/08/2012CN202370448U Mechanical hand of sleeve strengthening table
08/08/2012CN202370447U Sliding sleeve-type casting ball multistage acidification technical pipe column
08/08/2012CN202370446U Cylindrical in-hole centering device
08/08/2012CN202370445U External upset special thread sleeve joint for heavy oil thermal recovery well
08/08/2012CN202370444U Novel single bent screw
08/08/2012CN202370443U Multifunctional pumping rod joint
08/08/2012CN202370442U Rotatable spherical connector of sucker rod
08/08/2012CN202370441U Anticorrosive and wear-resistant sucker rod
08/08/2012CN202370440U Circular arc-shaped prismatic drill rod for pumping gas from coal bed
08/08/2012CN202370439U Penetrating water-plugging rod-quitting device for drill rod
08/08/2012CN202370431U Linear drilling device of mine gas drainage drill rod
08/08/2012CN202370428U Drilling machine
08/08/2012CN102628339A Mine drill stem
08/08/2012CN102084168B Double-ended flexible pipe joint having stacked co-axial primary and secondary annular elastomeric flex elements
08/08/2012CN101068711B Dispositif de liaison superieure entre deux conduites sous marines de transport de fluide
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