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)
10/2000
10/18/2000EP0843773B1 Friction-reducing drill pipe component
10/18/2000CN2401691Y Eccentrically wearing-resistant collar for sucker rod
10/17/2000US6131953 Coiled tubing drilling hydraulic disconnect
10/17/2000US6131664 System, apparatus, and method for installing control lines in a well
10/17/2000US6131662 Methods of completing wells utilizing wellbore equipment positioning apparatus
10/17/2000US6131658 Method for permanent emplacement of sensors inside casing
10/12/2000WO2000060780A1 Method and apparatus for determining position in a pipe
10/12/2000WO2000060266A1 Drill pipe assembly
10/11/2000EP1042583A1 Apparatus and method for injecting treatment fluids into an underground formation
10/11/2000EP1042098A1 Work piece repair
10/11/2000CN1269863A Rock drill and method for manufacturing said rock drill
10/11/2000CN1269846A Device, drill member and method for masking member at thermo chemical surface treatment
10/11/2000CN1057364C Double walled heat insulated tubing and method for installing them
10/11/2000CN1057362C Torque control device for rotary mine drilling machine
10/10/2000US6129161 Rotary drill bits with extended bearing surfaces
10/10/2000US6129151 Apparatus for use in the completion of subsea wells
10/05/2000WO2000058596A1 Stabiliser tool block wear pad assembly
10/04/2000EP1041240A2 Auger drill
10/04/2000EP0939854B1 Connector for an expandable tubing string
10/03/2000US6125952 Percussive down-the-hole hammer and a drill bit therefor
10/03/2000US6125949 Method of and apparatus for horizontal well drilling
09/2000
09/28/2000WO2000057096A1 Pipe connector
09/28/2000WO2000057020A1 Pipe coupling and pipe section with auxiliary connections
09/28/2000WO2000057018A1 Rotary steerable system for use in drilling deviated wells
09/28/2000DE19912150A1 Drilling rod, for mining operations, for example, has locking bar installed on second drill column's end and hinging between released position and locking position protruding over outer circumference of second drill column
09/28/2000CA2367523A1 Rotary steerable system for use in drilling deviated wells
09/27/2000CN2398415Y Bamboo-joint-type sucker rod
09/27/2000CN1267780A Pulling rod of composite material
09/26/2000USRE36880 Spoolable flexible hydraulic controlled coiled tubing safety valve
09/26/2000US6123561 Electrical coupling for a multisection conduit such as a drill pipe
09/26/2000US6123368 Two-step, differential diameter wedge threaded connector
09/26/2000US6123363 Self-centering low profile connection with trapped gasket
09/26/2000US6123160 Drill bit with gage definition region
09/20/2000CN2397252Y Paraffin scraping centralizer
09/20/2000CN2397251Y Centralising manipulator for oil field derrick
09/19/2000US6119797 Single cone earth boring bit
09/19/2000CA2184665C Shock tool for use in directional drilling
09/14/2000WO2000053887A2 Wellbore primary barrier and related systems
09/14/2000WO2000053886A1 Fluid controlled adjustable down-hole tool
09/14/2000WO2000053884A1 Hybrid pipe for great depth
09/13/2000EP1035011A2 Apparatus for transferring fluid between the seabed and a floating vessel
09/13/2000EP1034355A1 Tool cooling system
09/13/2000EP1034354A1 Mill for use in a wellbore and method of milling
09/13/2000EP0741834B1 System, method and cutterhead for dry full-area drilling
09/12/2000US6116356 Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter
09/12/2000US6116354 Rotary steerable system for use in drilling deviated wells
09/12/2000US6116337 Articulated downhole electrical isolation joint
09/12/2000US6116085 Instrumentation tubing string assembly for use in wellbores
09/11/2000CA2608605A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2607830A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2607565A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2607100A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2607070A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2606444A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/08/2000WO2000052296A1 Swivel device
09/06/2000EP1032748A1 Flexible sinker bar assemblies
09/06/2000CN2395026Y Drilling rod for electric coal drill
09/06/2000CN2395025Y Connection rod between pumping rod of well pumping unit and pump piston
09/06/2000CN1265445A Integral joint of connecting two pipes
09/05/2000US6112836 Rotary drill bits employing tandem gage pad arrangement
09/05/2000US6112813 Method of providing a conduit and continuous coiled tubing system
09/05/2000US6112809 Downhole tools with a mobility device
08/2000
08/31/2000WO2000050733A1 Internal junction reinforcement
08/31/2000WO2000050729A2 Mills for wellbore operations
08/31/2000WO2000029709A3 Rotary cone drill bit having a bit body with integral stabilizers
08/30/2000EP1030957A2 Improvements in or relating to downhole tools
08/29/2000USRE36833 Temperature compensated wire-conducting tube and method of manufacture
08/29/2000US6109989 Submerged pipeline manifold for offloading mooring buoy and method of installation
08/29/2000US6109834 Composite tubular and methods
08/29/2000US6109833 Device for transferring fluid between equipment on the seabed and a surface unit
08/29/2000US6109830 Riser system for connecting a seabed installation with a floating vessel
08/29/2000US6109374 Roller stabilizer
08/29/2000US6109355 Tool string shock absorber
08/29/2000US6109353 Single bore riser system
08/29/2000US6109305 Double walled pipe, jacking method and pipe end structure of leading pipe
08/29/2000US6109197 System for loading ships at sea
08/29/2000CA2033368C Assembly for electrical connection through a multi-element duct
08/24/2000WO2000049268A1 Casing mounted sensors
08/24/2000WO2000049267A1 Method and device for linking surface to the seabed for a submarine pipeline installed at great depth
08/24/2000WO2000048899A1 Floating offshore construction, and floating element
08/23/2000EP1030094A2 Remotely operable underwater connector assembly
08/23/2000EP1030029A1 Integral joint for the connection of two pipes
08/23/2000EP1029146A1 A friction reducing tool
08/23/2000EP0904478B1 Drilling apparatus
08/23/2000EP0830492B1 Centralizer
08/23/2000CN2392910Y Reversible sucker-rod centralizing anti-dropping device
08/23/2000CN1263977A Rotation steerable drilling system using sliding sleeve
08/22/2000US6108268 Impedance matched joined drill pipe for improved acoustic transmission
08/22/2000US6106024 Riser joint and apparatus for its assembly
08/22/2000CA2150159C Wireline cable head for use in coiled tubing operations
08/17/2000WO2000047863A1 Method of making a conductive downhole wire line system
08/17/2000WO2000047861A2 Hydraulic underreamer and sections for use therein
08/17/2000WO2000047860A2 Directional drilling apparatus
08/16/2000EP1027519A1 Apparatus for directional drilling
08/16/2000EP1027472A1 A device, a drill member and a method for masking the member at thermo chemical surface treatment
08/16/2000CN1263588A Screw joint for oil well piping
08/16/2000CN1263213A Sealing gasket component for submerged pump
08/16/2000CN1055534C Threaded joint for pipes and assembling method using the same
08/15/2000US6103031 Continous power/signal conductor and cover for downhole use
08/15/2000US6102141 Rock drill having an internal flushing channel
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