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
10/26/2012CA2833658A1 Slip joint and method of operating a slip joint
10/26/2012CA2833602A1 Downhole tool, method & assembly
10/26/2012CA2831635A1 Galvanically isolated exit joint for well junction
10/26/2012CA2816465A1 Method and system for improving drilling speed by using drill string vibration
10/25/2012US20120267170 Tapered thread configuration with improved durability
10/25/2012US20120267118 Offshore universal riser system
10/24/2012EP2514912A1 Smooth bore latch for tie back receptacle extension
10/24/2012EP2513408A1 Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars
10/24/2012CN202500535U Oil pumping tubing string and oil pumping rod string with automatic paraffin removing apparatus
10/24/2012CN202500507U Twisting-fastened type polish rod centering device for pumping well
10/24/2012CN202500506U Drilling rod and rotary drilling machine
10/24/2012CN202500505U Telescopic drill rod for rotary drilling rig
10/24/2012CN202500491U Closable screw drilling tool transmission shaft
10/24/2012CN102753450A Wellbore pipe protection device
10/24/2012CN102747968A Drill rod coupler for down-the-hole drill
10/24/2012CN102747967A Multi-stage segmented release water exploration pipe column and method for casing well completion multi-stage fractured horizontal well
10/24/2012CN102747966A Lining wear-resistant and corrosion-resistant oil pipe of special specifications
10/24/2012CN102747951A Follow-up drilling machine for sleeve of down-the-hole hammer
10/24/2012CN102747289A Ultrahigh-strength steel used for petroleum casing pipe, petroleum casing pipe, and manufacturing method thereof
10/24/2012CN101713287B Magnetic short section used for measuring distance between adjacent wells by electromagnetic detection while drilling
10/23/2012US8291976 Fluid flow control device
10/23/2012US8291973 Offset joint for downhole tools
10/23/2012CA2663988C Pothead for use in highly severe conditions
10/18/2012WO2012142543A2 System and method for coupling an impregnated drill bit to a whipstock
10/18/2012US20120263539 Power umbilical comprising separate load carrying elements of composite material
10/18/2012US20120261132 Lead impression wear bushing
10/17/2012EP2510482A2 Design method for subsea equipment subject to hydrogen induced stress cracking
10/17/2012CN202493226U Special protecting plate for vertical well drilling system
10/17/2012CN202493225U Drill stem straightening arm
10/17/2012CN202493224U Internal centering and buckling centering device
10/17/2012CN202493223U Separable eccentric centering device
10/17/2012CN202493222U Quick pipe flushing connector
10/17/2012CN202493220U Drilling tool joint for connecting down-well liquid level monitoring instrument
10/17/2012CN102742084A Connecting head for connecting a cable and a downhole tool and associated intervention device
10/17/2012CN102741847A Design method for subsea equipment subject to hydrogen induced stress cracking
10/17/2012CN102741496A Assembly for connecting a flexible tubular line to an underwater installation
10/17/2012CN102735022A Oil and gas field equipment pipeline drying device
10/17/2012CN102733795A Omnidirectional bending small-diameter flexible joint
10/17/2012CN102733763A High-extrusion resistance special threaded connection joint for sleeve pipes
10/17/2012CN102733762A Sucker rod with inserting rod head
10/17/2012CN102733761A Pumping rods with miter rod heads
10/17/2012CN102733760A Constant-pressure releasing and stretching tool capable of preventing interlayer tubular column from creeping for water injection well
10/17/2012CN102733759A Sucker rod with cambered-surface ball joint rod head
10/17/2012CN102733757A Drill bit of drilling type coal mining machine
10/17/2012CN101996331B Drilling tool code recognition system
10/17/2012CN101805659B Water base lubricating agent used for eccentric wear prevention of oil well
10/17/2012CN101798907B Turning ring
10/17/2012CN101646835B Drilling tool with feed control
10/17/2012CN101575948B Self-lubricating sucker rod joint and manufacturing process thereof
10/17/2012CN101418673B Single-hook screw thread and end plane metal self-sealing expansion sleeve pipe
10/17/2012CN101289925B Heat insulated tubing machining process
10/16/2012US8286715 Coated sleeved oil and gas well production devices
10/16/2012US8286714 Riser tensioner with shrouded rods
10/16/2012US8286702 Wireless downhole tool positioning system
10/16/2012US8286701 Recovering heated fluid using well equipment
10/11/2012WO2012138912A2 Offshore top tensioned riser buoyancy can system and methods of field development
10/11/2012WO2012138813A2 Roller standoff assemblies
10/11/2012WO2012138517A2 Corrodable boring shoes for wellbore casing, and methods of forming and using such corrodable boring shoes
10/11/2012WO2012138501A2 Torque transmitting rings for sleeves in electrical submersible pumps
10/11/2012WO2012138126A2 Rod mounting device for drilling machine
10/11/2012US20120255790 Dual Pipe For Increased Fluid Flow
10/11/2012US20120255744 Roller Standoff Assemblies
10/11/2012US20120255743 Corrodable boring shoes for wellbore casing, and methods of forming and using such corrodable boring shoes
10/11/2012US20120255722 Perforating string with longitudinal shock de-coupler
10/11/2012CA2832060A1 Torque transmitting rings for sleeves in electrical submersible pumps
10/10/2012EP2507879A1 Device for removing or replacing cables
10/10/2012EP2507540A2 Threaded connection
10/10/2012EP2507468A2 Assembly and method for subsea well drilling and intervention
10/10/2012EP2507466A2 Assembly for connecting a flexible tubular line to an underwater installation
10/10/2012CN202483563U Sensor and oil pipe structure
10/10/2012CN202483550U Multi-arm spring type roller centralizer
10/10/2012CN202483540U Thermal-production gas injection tubular column of pumping well
10/10/2012CN202483495U Copper gasket composite metallic sealing ring
10/10/2012CN202483474U Anti-falling instrument for square drill rod
10/10/2012CN202483473U Eccentric-abrasion-proof automatic centering and centralizing device of oil sucking rod
10/10/2012CN202483472U Casing centralizer
10/10/2012CN202483471U Well completion structure of solution mine vertical well
10/10/2012CN202483470U Special-round-thread joint for oil casing pipes
10/10/2012CN202483469U Drilling rod and rotary drilling rig
10/10/2012CN202483468U Novel heat preservation sleeve pipe
10/10/2012CN202483467U Cardan shaft of spherical hinge positive displacement motor
10/10/2012CN202483434U Eccentric casing drilling tool
10/10/2012CN102725475A Shock reduction tool for a downhole electronics package
10/10/2012CN102720466A Special alloy wax-proofing tool
10/10/2012CN102720443A Sucker rod centering guide convenient for installation
10/10/2012CN102720442A Sucker rod centralizer
10/10/2012CN102720441A Accessory used for guiding sucker rod
10/10/2012CN102720440A High-sealed BCSG joint
10/10/2012CN102720439A High-tightness buttress thread sleeve joint
10/10/2012CN102720438A High-strength flexible oil-pumping polished rod
10/10/2012CN102719747A Sulfate reducing bacteria corrosion-resistant oil well pipe and production method thereof
10/10/2012CN102191442B Steel for marine riser flange of marine deepwater drilling and manufacturing method of marine riser flange
10/10/2012CN101936137B Discharging and mining pipe for coalbed methane
10/10/2012CN101769129B Integral layering gas recovery technology tubular column and application method thereof
10/09/2012US8284075 Apparatus and methods for self-powered communication and sensor network
10/09/2012US8282317 Subsea structure and methods of construction and installation thereof
10/09/2012US8281877 Method and apparatus for drilling with casing
10/09/2012US8281852 Coiled tubing quick connect
10/09/2012US8281472 Method of manufacturing continuous sucker rod
10/09/2012CA2571358C Entrainment fluid channeling device for a down-hole drill string
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