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)
12/2012
12/12/2012CN202596598U Drilling fluid filter circulation short section and drilling fluid filter circulation pipe string
12/12/2012CN202596597U Thread-converting short joint
12/12/2012CN202596596U Water injection tubular column connector
12/12/2012CN202596595U Hanging shear joint
12/12/2012CN202596594U Bar-drop and pressure-keep dual-functional relief joint
12/12/2012CN202596593U Depth correcting anti-collision joint
12/12/2012CN202596592U Oil pipe coupler
12/12/2012CN202596591U Four-way sleeve of well opening
12/12/2012CN202596590U Hollow oil pumping rod well-washing pipe rod column
12/12/2012CN202596589U Process column for transforming well completion hierarchically with casing pipes and sliding sleeves
12/12/2012CN202596588U High-pressure elbow sealing device
12/12/2012CN202596584U Hand-held earth boring machine single-blade drill bit
12/12/2012CN202596572U Well drilling rod and pulse plasma drilling machine system
12/12/2012CN102817563A Continuous oil pipe with gradual changing wall thickness and production method for continuous oil pipe
12/12/2012CN102817562A Sleeve joint
12/12/2012CN102817561A Novel petroleum casing joint
12/12/2012CN102817560A Oil pipe hoisting assisting device
12/12/2012CN102817559A Driving rod for pumping unit
12/12/2012CN102031935B Extendable combined drill rod with water passage, air passage and slurry returning passage
12/12/2012CN101617100B Optical wet connect
12/11/2012CA2725126C Drill stem connection
12/11/2012CA2619175C Method and device for releasing a block on a bore-crown during a boring process
12/08/2012CA2742660A1 Method and apparatus for running casing in a wellbore with a fluid driven rotatable shoe
12/06/2012WO2012167045A2 Anti-back off device for down hole tools and drive systems
12/06/2012WO2012166928A2 Downhole tools having radially expandable seat member
12/06/2012WO2012166324A2 High pressure multibore junction assembly
12/06/2012WO2012166137A1 Optimized pressure drilling with continuous tubing drill string
12/06/2012WO2012138501A3 Torque transmitting rings for sleeves in electrical submersible pumps
12/06/2012WO2012074928A3 Bottom preventer for use in a drilling system
12/06/2012WO2012064380A3 Gasket test protector sleeve for subsea mineral extraction equipment
12/06/2012US20120305268 High Pressure Multibore Junction Assembly
12/06/2012CA2837951A1 High pressure multibore junction assembly
12/06/2012CA2837859A1 Optimized pressure drilling with continuous tubing drill string
12/05/2012EP2529075A1 Tapered spline connection for drill pipe, casing and tubing
12/05/2012CN202578639U Hot washing wax oil pipe convenient to disassemble and assemble
12/05/2012CN202578569U Protector for pulled-apart and falling polish rod
12/05/2012CN202578560U Novel mining drill rod
12/05/2012CN202578559U High-pressure joint-free coiled pipe
12/05/2012CN202578558U Pumping rod centralizer with protective sleeve
12/05/2012CN202578557U Centering device for direction-controlling line
12/05/2012CN202578556U Rod-pulling proofing device, drilling rod and rotary drilling rig
12/05/2012CN202578555U Special buttress thread oil casing joint
12/05/2012CN202578554U Special buttress thread oil sleeve connection joint
12/05/2012CN202578553U High-sealing-property special round-thread oil sleeve connecting joint
12/05/2012CN202578552U Connecting joint with special knuckle threads for oil casing
12/05/2012CN202578551U Oil well pipe screwed joint
12/05/2012CN202578550U Ultrahigh-torsional-strength double-shoulder drill-pipe threaded connection structure
12/05/2012CN202578549U Special knuckle-thread high anti-torque oil sleeve tube connector
12/05/2012CN202578548U Special knuckle threaded pipe joint
12/05/2012CN202578547U Safety back-off device while drilling
12/05/2012CN202578546U Gas sealing threaded connection structure of steel pipe
12/05/2012CN202578545U High-resistance torque tube joint with special knuckle threads
12/05/2012CN202578544U Automatic adjusting joint of excavator drilling tool
12/05/2012CN202578543U Vacuum thermal insulation circulating pipe
12/05/2012CN202578542U Non-standard oil tube with same specification and larger diameter
12/05/2012CN202578541U Multifunctional well logging pipe
12/05/2012CN202578540U Combined-type full-lock-buckle drilling rod
12/05/2012CN202578513U Filling pile aiguille
12/05/2012CN202578497U Device for drilling water-bearing stratum
12/05/2012CN202578488U Tube well hole-forming device
12/05/2012CN102808586A Continuous oil tube with gradually changed wall thickness and manufacturing method thereof
12/05/2012CN102808585A Fixed gear type heavy load universal shaft device of spiral drilling rig
12/05/2012CN102808584A Mechanical water plugging pipe column for multi-point discharge of cased hole completion multi-section fractured horizontal well and method
12/05/2012CN102808583A Hydrological exploration drilling well pipe, coal mining pipe descending method and hydrological exploration method
12/05/2012CN102116168B Gas drainage system and method for hyposmosis soft coal seams
12/05/2012CN101949269B Safety joint for switching off hydraulic pressure
12/05/2012CN101864912B Roller type water injection well centering device
12/05/2012CN101608538B External packer of expanding sealing sleeve of internal pipe string tool and construction technique
12/04/2012US8323115 Drilling apparatus
12/04/2012US8322439 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells
12/04/2012US8322438 Riser buoyancy adjustable thrust column
12/04/2012US8322436 Split assembly attachment device
12/04/2012US8322433 Wired slip joint
12/04/2012US8322429 Interchangeable subsea wellhead devices and methods
12/04/2012CA2703207C Drill-string shock absorbers
12/04/2012CA2669007C Wellbore method and apparatus for completion, production and injection
12/04/2012CA2544835C Bubble breaker assembly
11/2012
11/29/2012WO2012162214A1 Tubular connection and associated thread form
11/29/2012WO2012161910A2 Window joint for lateral wellbore construction and method for opening same
11/29/2012WO2012161816A1 Apparatus and method for damping vibration in a drill string
11/29/2012WO2012161641A1 Thread device, thread joint and drill string component for percussive rock drilling
11/29/2012WO2012159146A1 A clamp assembly and a clamp element especially for clamping buoyancy elements to pipeline risers
11/29/2012WO2011124961A3 Dual drilling activity drilling ship
11/29/2012US20120298376 Tubular coupling device
11/29/2012US20120298373 Assembly for supporting at least one fluid transport pipe through an expanse of water, and associated facility and method
11/29/2012US20120298367 Earth heat transfer loop appartus
11/29/2012US20120298366 Well Fishing Method and System
11/29/2012US20120298355 Logging While Pulling
11/29/2012CA2837085A1 Tubular coupling device
11/29/2012CA2835414A1 Thread device, thread joint and drill string component for percussive rock drilling
11/29/2012CA2834586A1 Tubular connection and associated thread form
11/29/2012CA2831802A1 Window joint for lateral wellbore construction and method for opening same
11/29/2012CA2829318A1 Apparatus and method for damping vibration in a drill string
11/28/2012EP2527701A1 Methods and Connections for Coupled Pipe
11/28/2012EP2526257A1 Downhole device actuator and method
11/28/2012EP2526250A1 Device for uncoupling a drill string, drilling system comprising such a uncoupling device, and use of such a system
11/28/2012EP2441997B1 A pipe coupling
11/28/2012CN202560297U Spiral catcher
11/28/2012CN202560196U Temperature sensitive casing thermal stress compensator
11/28/2012CN202560124U Square drill collar
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