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)
10/2012
10/04/2012WO2012135306A2 Coated oil and gas well production devices
10/04/2012WO2012135188A2 Fluid-saving pump down tool
10/04/2012WO2012106039A3 Disconnect devices for downhole strings
10/04/2012WO2012074984A3 Tapered thread configuration with improved durability
10/04/2012US20120247783 Riser tensioner system
10/04/2012US20120247782 Marine riser adjustable buoyancy modules
10/04/2012US20120247779 Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars
10/04/2012US20120247756 Fluid-Saving Pump Down Tool
10/04/2012CA2831014A1 A riser
10/03/2012EP2504518A1 Assembly for producing a threaded connection, method for making up and breaking out said connection and use of said connection in a work over riser
10/03/2012EP2504517A2 Riser configuration
10/03/2012CN202467829U Integrated mechanical water detection, water plugging and channeling detection tubular column
10/03/2012CN202467812U Rigid weighted lever
10/03/2012CN202467785U Oil pumping system
10/03/2012CN202467738U Anti-deviation wellhead sealing device
10/03/2012CN202467705U One-way valve for drill rod
10/03/2012CN202467704U Novel elastic centering device
10/03/2012CN202467703U Limiting-type rotatable wax scraping centering device
10/03/2012CN202467702U Spiral stabilizer
10/03/2012CN202467701U Eccentric wear prevention device of underground oil pumping rod
10/03/2012CN202467700U Centralizer shell with fixing sleeve
10/03/2012CN202467699U Telescopic type casing centralizer
10/03/2012CN202467698U Open type metal liner aligning device special for directional well
10/03/2012CN202467697U Casing stabbing board
10/03/2012CN202467696U Accurate anti-abrasion and torque-reduction device for well drilling pipe
10/03/2012CN202467695U Floating device and vehicle-mounted CBM (Coal Bed Methane) drilling machine using floating device
10/03/2012CN202467694U Novel friction-weld drill pipe
10/03/2012CN202467693U Protective short joint connected repairing drill pipe
10/03/2012CN202467692U Rotary connector device for drilling rig
10/03/2012CN202467691U Slave tube clamp with rubber
10/03/2012CN202467690U High anti-torque sucker rod
10/03/2012CN202467689U Continuous cycle pup joint for well drilling
10/03/2012CN202467688U Novel composite steel wire seal cavity
10/03/2012CN202467687U Front connector of high pressure down-hole hammer
10/03/2012CN202467686U Special wellhead reflux unit used for oil field well completing test
10/03/2012CN202467685U Connection pipe for high-pressure water injection flow meter
10/03/2012CN202467684U Air lift reverse circulation double-wall drill stem
10/03/2012CN202467683U Blended liquid viscosity reducing device for hollow sucker rod for thick oil well
10/03/2012CN202467682U Anti-drop device of telescopic rod
10/03/2012CN202467681U Safety anti-loosening locking device for mandrel-type oil (casing) pipe
10/03/2012CN202467644U Underground drill rig
10/03/2012CN102713394A Galling-resistant threaded tubular component, and process for coating said component
10/03/2012CN102713141A Electric hydraulic interface for modular downhole tool
10/03/2012CN102713129A Downhole device
10/03/2012CN102705140A Drilling power tool, drilling tool and drilling method for forming boreholes
10/03/2012CN102704893A Method for cleaning and recovering wax oil of oil pipes, and special thermal washing wax oil removing pipes capable of being disassembled and assembled conveniently
10/03/2012CN102704876A Method and tool for putting well completion pipe down by utilizing drill rod
10/03/2012CN102704867A Vacuum heat-preservation circulating pipe special for oil production of oilfield
10/03/2012CN102704866A Novel sucker rod centralizer
10/03/2012CN102704865A Corrosion-resistant and high-tightness screw joint
10/03/2012CN102704864A Threaded nipple for development of shale gases
10/03/2012CN102704863A Hot crack prevention internal screw joint of drill rod and manufacturing method for internal screw joint
10/03/2012CN102704862A Special wellhead tee connecting device for underbalanced drilling
10/03/2012CN102704857A Underground supercharging and accelerating system
10/03/2012CN102704839A Hanging carrying type integral hydraulic rock drilling machine
10/03/2012CN102108839B Drill rod quick-insertion safe connection mechanism
10/03/2012CN101962737B Multi-element alloyed ultrahigh-strength sucker rod steel and manufacturing method thereof
10/03/2012CN101949268B Rotating joint
10/03/2012CN101871323B Lengthened polish rod for oil well and connecting method thereof
10/03/2012CN101482015B Root-soil drill integrated sampling instrument
10/03/2012CN101479628B Method and apparatus for building a tilted antenna
10/02/2012USRE43697 Drilling quick connectors
10/02/2012US8276660 Dual anchoring tubular back-off tool
10/02/2012CA2657170C Articulating joint with injector port
10/02/2012CA2555709C Reverse sliding seal for expandable tubular connections
10/02/2012CA2552555C Thread protector for use on pin end of oilfield tubulars
09/2012
09/27/2012WO2012128872A2 Sonde with integral pressure sensor and method
09/27/2012WO2012127157A1 Method for the assisted installation of an underwater riser
09/27/2012WO2012106486A3 Downhole tool actuation
09/27/2012WO2012091983A3 Secondary flow path module, gravel packing system including the same, and method of assembly thereof
09/27/2012WO2012049506A4 Apparatus and methods for orienting, stabilising or stably operating a logging tool
09/27/2012WO2011107734A3 Super shoe swell packer
09/27/2012WO2011104516A8 Pressure-activated valve for hybrid coiled tubing jointed tubing tool string
09/27/2012US20120241221 Microtunnelling system and apparatus
09/27/2012US20120241218 Sonde with integral pressure sensor and method
09/27/2012US20120241165 Thermal insulation for pipes in a drill pipe riser, tubular segment and thermal insulation system for joint couplings
09/27/2012DE102012004938A1 Schneidplatte für einen Firstbohrmeißel Cutting plate for a roof drill bit
09/26/2012EP2503094A1 Control line running system
09/26/2012EP2503093A2 Module based bend stiffener
09/26/2012EP2501890A2 Swellable connection system and method of using the same
09/26/2012EP2501889A1 Facility having fanned seabed-to-surface connections
09/26/2012CN202451126U High-temperature injection-production process pipe column for J-shaped well
09/26/2012CN202451119U Integrated tubular column for perforation, fracturing and transfer pumping
09/26/2012CN202451113U Thermally-cleaning, wax-removing and oil layer pollution-preventing oil pumping pipe column
09/26/2012CN202451077U Efficient spiral alloy drill rod
09/26/2012CN202451076U Spiral borehole prevention spiral stabilizer
09/26/2012CN202451075U Self-lubrication structure of roller-type stabilizer and reamer roller component
09/26/2012CN202451074U Interlayer packer centralizer capable of expanding initiatively when meeting oil/water
09/26/2012CN202451073U Drill rod connecting sleeve of rotary drilling rig
09/26/2012CN202451072U Drilling machine thread protection device
09/26/2012CN202451071U Lifting short joint of wellhead for thermal recovery
09/26/2012CN202451070U High wear-resistant drill rod with spiral ribs at two ends
09/26/2012CN202451069U Continuous tube
09/26/2012CN202451049U Seal device of transmission shaft of PDM (positive displacement motor) drill
09/26/2012CN202451047U All-hydraulic double-pole soft coal drilling machine
09/26/2012CN102691493A Continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and casing fracturing method
09/26/2012CN102691487A Complex wave pipe
09/26/2012CN102691482A Rotary joint of horizontal directional drilling machine
09/26/2012CN102691481A Screw joint for steel piping
09/26/2012CN102691480A Top driving drill rod
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