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)
11/2006
11/29/2006	EP1322837B1 Improved well testing system
11/29/2006	CN2841936Y Three-position ring casing electric-connecting clamp
11/29/2006	CN1287065C Seashore and seabed connecting apparatus for laying underwater pipelines in great depth
11/29/2006	CN1287064C Soil excavating tool, swivel, connecting device and ground improving method
11/28/2006	US7140446 Connector for expandable well screen
11/28/2006	US7140432 Dual diameter and rotating centralizer/sub and method
11/28/2006	US7140431 Centraliser for an expandable tubular element in a wellbore
11/28/2006	CA2448149C Sprung member and actuator for downhole tools
11/28/2006	CA2427034C Expanding wellbore junction
11/28/2006	CA2417318C Expandable underreamer/stabilizer
11/28/2006	CA2384575C Method for installing an undersea catenary riser
11/28/2006	CA2336905C Downhole tension swivel sub
11/28/2006	CA2326738C Apparatus and method for mitigating wear in downhole tools
11/28/2006	CA2213713C Downhole tool
11/28/2006	CA2208661C Downhole electricity transmission system
11/28/2006	CA2203634C Improvements in and relating to pipe connectors
11/23/2006	US20060260831 Portable power tool
11/23/2006	US20060260818 Downhole Connection System
11/23/2006	US20060260817 Downhole Connection System
11/23/2006	US20060260797 Downhole component with multiple transmission elements
11/22/2006	EP1723308A1 System for sealing an annular space in a wellbore
11/22/2006	EP1549821B1 Pipe centralizer and method of forming
11/22/2006	EP1540127B1 Offshore platform with vertically-restrained buoy and well deck
11/22/2006	EP1350003B1 Method of drilling and operating a subsea well
11/22/2006	CN2839548Y Oil pipe pup joint internal anti-eccentrically wearing device
11/22/2006	CN2839547Y Spiral type ball casing centralizer damper
11/22/2006	CN2839546Y Casing centralizer
11/22/2006	CN2839545Y High gas deep hole drill rod
11/22/2006	CN1867752A Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system
11/22/2006	CN1285739C Hardfacing alloy. methods and products
11/21/2006	US7137461 Masonry drilling tool
11/21/2006	CA2361928C Mills for wellbore operations
11/21/2006	CA2260448C Apparatus and methods for sealing a wellbore junction
11/20/2006	CA2821064A1 Retractable joint and cementing shoe for use in completing a wellbore
11/20/2006	CA2750697A1 Retractable joint and cementing shoe for use in completing a wellbore
11/16/2006	WO2006121699A2 Flow through subassembly for a downhole drill string and method for making same
11/16/2006	WO2006121386A1 Rock drilling element, drill string and method for transferring impact energy from a top hammer unit to a drill bit
11/16/2006	WO2006120320A1 Flexible tubular conduit with an anti-wear jacket
11/16/2006	WO2005090743A8 System for sealing an annular space in a wellbore
11/16/2006	WO2004025069A3 System and method of drilling and completion
11/16/2006	US20060254828 Fracture and wear resistant compounds and rock bits
11/16/2006	US20060254827 Flexible drill string member
11/16/2006	US20060254825 Drilling assembly with a steering device for coiled-tubing operations
11/16/2006	US20060254778 Method and system for tubing a borehole in single diameter
11/16/2006	CA2606899A1 Flow through subassembly for a downhole drill string and method for making same
11/16/2006	CA2606120A1 Rock drilling element, drill string and method for transferring impact energy from a top hammer unit to a drill bit
11/15/2006	CN2837506Y Pipe string for stratified oil production in electric pump well
11/15/2006	CN2837496Y Centralizer of pumping rod
11/15/2006	CN2837495Y Opposite vertex ring for improving torsion resistant property of casing thread used in drilling
11/15/2006	CN2837494Y Connector for casing drilling drill bit and casing
11/15/2006	CN2837493Y Well cementing casing device capable of quick setting of cement slurry
11/15/2006	CN2837492Y Oil pipe with separation device used in oil production well
11/15/2006	CN1863982A Method for interconnecting electrical conduits in a borehole
11/15/2006	CN1284946C Threaded joint for steel pipe with excellent seizure and corrosion resistances
11/14/2006	US7134514 Dual wall drill string assembly
11/14/2006	CA2349223C Method and apparatus for connecting a lateral branch liner to a main well bore
11/14/2006	CA2320747C Centralizer
11/11/2006	CA2545997A1 Fuel cell apparatus and method for downhole power systems
11/09/2006	WO2006117331A1 Drill rod
11/09/2006	WO2006020734A3 Low carbon steel expandable tubular
11/09/2006	US20060249287 Steerable drilling system
11/09/2006	CA2606428A1 Rotary steerable motor system for underground drilling
11/09/2006	CA2605788A1 Drill rod
11/08/2006	EP1718841A1 Annular pressure relief collar
11/08/2006	EP1549820B1 Apparatus and method for transmitting a signal in a wellbore
11/08/2006	EP1319115B1 Methods and apparatus for forming a lateral wellbore
11/08/2006	CN2835531Y Multifunctional tubing anchor
11/08/2006	CN2835527Y Thermal recovery casing head
11/08/2006	CN2835526Y Anti-torsion bearing protection joint
11/08/2006	CN2835525Y Welded drill rod for trenchless drilling
11/08/2006	CN1860284A Expandable wellbore assembly
11/08/2006	CN1860281A Rotationally locked wear sleeve for through-tubing drilling and completion
11/08/2006	CN1283896C Method and apparatus for determining oil-layer characteristic
11/08/2006	CN1283892C Electrical transmission system for multilateral well
11/07/2006	US7132127 Centrifugal applicator
11/07/2006	US7131505 Drilling with concentric strings of casing
11/07/2006	US7131497 Articulated drillstring entry apparatus and method
11/05/2006	CA2545765A1 Steerable drilling system
11/03/2006	CA2545565A1 Device which is expandable to engage the interior of a tube
11/02/2006	WO2006116632A2 Conductor pipe string deflector and method of using same
11/02/2006	WO2005124397B1 Apparatus and methods for self-powered communication and sensor network
11/02/2006	US20060244318 Electric device, in particular electric handheld power tool
11/02/2006	US20060243492 Inner and outer motor with eccentric stabilizer
11/02/2006	US20060243489 System and method for damping vibration in a drill string
11/02/2006	US20060243470 Manual actuation of PTO-based chuck
11/02/2006	US20060243469 Handwheel-operated device
11/02/2006	US20060243454 System and Method for Forming Downhole Connections
11/02/2006	US20060243450 Method of deploying and powering an electrically driven in a well
11/02/2006	US20060243436 Conductor pipe string deflector and method of using same
11/02/2006	US20060243435 Pressure responsive centralizer
11/02/2006	EP1716312A1 Drill string component, wear protection component and cutter head for use in a rock drilling process
11/01/2006	CN2833091Y Hole enlargement tool centralizer for casing pipe
11/01/2006	CN1854457A Sprial ribbed drilling stem of spiral ribbed bolthole
11/01/2006	CN1854456A Stabilized-nail hot-milling circular steel and its production
11/01/2006	CN1854454A Casing drilling method
11/01/2006	CN1282816C A drilling tool used in horizontal drilling applications
10/2006
10/31/2006	US7128172 Drill string for upward drilling and components therefor
10/31/2006	US7128159 System and method for limiting vortex-induced vibrations on an offshore production riser
10/31/2006	US7128156 Wellbore rig with heat transfer loop apparatus
10/31/2006	US7128155 Cutting tool and method of cutting an object in a well

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