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)
08/2000
08/15/2000US6102139 Device for drilling a bore hole in the ground
08/15/2000US6102135 Portable core sampler
08/15/2000US6102118 Multi-purpose adjustable centralizer system with tool
08/15/2000CA2229882C Male pin connector
08/15/2000CA2229004C Female wet connector
08/10/2000WO2000046479A1 Multilateral well and electrical transmission system
08/10/2000DE19904864A1 Earth boring apparatus has hose for compressed air feed to impact piston moving backwards and forwards with support corset locating on hose wall
08/09/2000EP1026364A1 Profiled element for a rotary drilling device and drill string having at least one of said elements
08/09/2000EP1025336A1 Method and apparatus for attaching a casing to a drill bit in overburden drilling equipment
08/09/2000EP1025333A4 Single riser with two wellheads
08/09/2000EP1025333A1 Single riser with two wellheads
08/09/2000CN2391002Y Self-locking oil pipe centralising device
08/08/2000US6098727 Electrically insulating gap subassembly for downhole electromagnetic transmission
08/08/2000US6098726 Torque transmitting device for rotary drill bits
08/08/2000US6098716 Releasable connector assembly for a perforating gun and method
08/08/2000US6098713 Methods of completing wells utilizing wellbore equipment positioning apparatus
08/04/2000CA2260710A1 Sucker rod coupler
08/03/2000WO2000045031A1 Controlling production
08/03/2000WO2000045025A1 Apparatus and method for mitigating wear in downhole tools
08/03/2000DE19857479C1 Impact absorbing mechanism for deep hole hammer drill, has air hole provided for connecting cylinder chamber and channel, which is closed by piston on exertion of axial force
08/02/2000EP1024248A2 Cementing head
08/02/2000EP1024245A2 Controllable stabiliser
08/02/2000EP1023521A1 Device for fitting an oil pipe stiffening sleeve on a support structure
08/02/2000EP0837979A4 Drill bit retainer for a down hole hammer assembly
08/02/2000CN2390005Y Sucker rod
08/02/2000CN1261948A Ultra high torque double shoulder tool joint
08/01/2000US6095266 Drill rod and method for its manufacturer
08/01/2000US6095259 Core sampler apparatus with specific attachment means
08/01/2000US6095248 Method and apparatus for remote control of a tubing exit sleeve
08/01/2000US6095247 Apparatus and method for opening perforations in a well casing
07/2000
07/27/2000WO2000043632A2 System with a compliant guide and method for inserting a coiled tubing into an oil well
07/27/2000WO2000043629A1 Friction reducing tool and method for its use in a wellbore
07/27/2000WO2000043628A2 Rotary-type earth drilling bit, modular gauge pads therefor and methods of testing or altering such drill bits
07/26/2000EP1022429A1 Multi purpose riser
07/26/2000CN1054794C Method for facting a substrate
07/25/2000US6092613 Rotary drill bits
07/25/2000US6092612 Rotary drilling systems
07/25/2000US6092602 Sealed lateral wellbore junction assembled downhole
07/25/2000US6092593 Apparatus and methods for deploying tools in multilateral wells
07/20/2000WO2000003600A3 Improved tubing handling for subsea oilfield tubing operations
07/19/2000EP1020616A2 Cable head for coiled tubing
07/19/2000EP1020615A2 Feeding method for laying underground pipes and pipe for carrying out this method
07/19/2000EP1019650A1 Improved composite drill pipe
07/19/2000EP0956425A4 Drill pipe/casing protector
07/19/2000EP0886714B1 Device for drilling a bore hole in the ground
07/19/2000CN2388338Y Improved anchor rod drilling rod
07/19/2000CN1260858A Extension drilling system
07/19/2000CN1260857A Earth formation surveying device
07/18/2000US6089336 Rotary drill bits
07/18/2000CA2193519C Downhole swivel
07/13/2000WO2000040886A1 Heat insulating device and method for insulating at least a submarine pipeline at great depth
07/13/2000WO2000040833A1 Drill pipe protector assembly
07/13/2000DE19958399A1 Brunnenbohrungsverschalung Wellbore casing
07/12/2000CN2387257Y Movable circulating joint
07/11/2000US6085963 Work piece repair
07/11/2000US6085837 Downhole fluid disposal tool and method
07/11/2000CA2221018C Straight hole drilling system
07/05/2000EP1015802A1 Ultra high torque double shoulder tool joint
07/05/2000EP1014877A1 Titanium molybdenum hafnium alloys for medical implants and devices
07/05/2000CN2386184Y Coupling apparatus without gap
07/05/2000CN2386183Y Direct connecting type oil casing pipe
07/05/2000CN1258805A Pumping rod of composite carbon fiber material and its manufacture
07/04/2000US6082457 Method of using a drill string tool
07/04/2000US6082454 Spooled coiled tubing strings for use in wellbores
07/04/2000US6082391 Device for hybrid riser for the sub-sea transportation of petroleum products
06/2000
06/28/2000EP1012440A1 Boring device
06/28/2000EP1012438A1 Gage pad arrangements for rotary drill bits
06/28/2000EP1012437A4 Pipe protector
06/28/2000EP1012437A1 Pipe protector
06/28/2000CN2385073Y Vacuum spiral drilling tool for taking gas
06/28/2000CN1053968C Improved slick line system with real-time surface display
06/27/2000US6079507 Drill bits with enhanced hydraulic flow characteristics
06/27/2000CA2006939C Controlled path drill tool equipped with a variable geometry stabilizer and utilisation of said tool
06/22/2000WO2000036265A1 Stabilized downhole drilling motor
06/21/2000EP1010854A1 Drilling machine
06/21/2000EP1010815A1 Splice for a drilled pile
06/21/2000EP1009908A1 Method and device for production of hydrocarbons
06/21/2000EP1009906A1 Riser bundle
06/21/2000EP1009905A1 Rock drill and method for manufacturing said rock drill
06/21/2000CN2383960Y Universal-joint for well appliances of oil field
06/21/2000CN2383959Y Anti-falling-off sucker rod
06/20/2000US6077342 Single crystal formed by the czochralski method and having a crystallographic axis as a pulling direction set within an angle range of 30 degrees from a b-axis (010) direction; substrate for uniform gallium nitride semiconductor thin film
06/18/2000CA2686627A1 Electrically sequenced tractor
06/15/2000WO2000034619A1 Deep ocean drilling method
06/15/2000WO2000034618A1 Deep ocean drilling system
06/15/2000WO2000034616A1 Apparatus for directional drilling
06/15/2000DE19919555C1 Extraction of geothermal energy from blind bores involves closed circuit feed of heat transmission medium with first chamber in heat exchanger tube for feed of cold fluid
06/14/2000EP1008717A1 Rotary steerable well drilling system utilizing sliding sleeve
06/14/2000CN2382831Y Drilling rig collar clamp and top device drill device composed of it
06/14/2000CN1256350A Apparatus and method for extracting fluid from oil well drilled in stratum
06/13/2000US6073696 Method and assembly for treating and producing a welbore using dual tubing strings
06/13/2000US6073659 Method and apparatus of removing liquid from underground cavity by directional drilling
06/13/2000US6073332 Corrosion resistant tubular system and method of manufacture thereof
06/08/2000WO2000033323A1 Cable arrangement
06/07/2000CN2382022Y Hole top device for nondestructive flaw detection of sucker rods
06/07/2000CN2381765Y Deep well pipe
06/07/2000CN1053255C Prodn. pipe for prodn. of oil or gas from oil or gas reservoir
06/07/2000CA2666668A1 Wellbore casing
06/06/2000USRE36723 Spoolable coiled tubing completion system
06/06/2000US6070678 Bit retention system
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