Patents
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
09/1989
09/12/1989US4865364 Conical thread form
09/12/1989US4865356 Composite material tubular member joint
09/12/1989US4865138 Drill string stabilizer
09/12/1989US4865128 Gravel packing system for a production radial tube
09/12/1989CA1259303A1 Spiralling tapered slip-on drill string stabilizer
09/12/1989CA1259213A1 Cable connector assembly
09/08/1989WO1989008214A1 Well tubing liner system
09/07/1989DE3806407A1 Arrangement for producing soil sections compacted with the addition of binding or sealing agents
09/07/1989DE3805657A1 Drilling tool with interchangeable conveying helix
09/06/1989EP0330769A1 Tubular joint with seal, method for repairing seal, and repair part insert
09/05/1989US4863311 Lining for bore holes in salt domes
09/05/1989US4862976 Spline drive for percussion drilling tool
09/05/1989US4862974 Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer
09/05/1989US4862965 Threadless well tool and method of making
09/05/1989US4862958 Coil tubing fluid power actuating tool
08/1989
08/31/1989DE3805160A1 Process for the underground connection of a product pipe to a collector, in particular in the region in which it is not possible to walk
08/30/1989EP0330584A1 Divice for transferring fluids between the sea bottom and the surface
08/30/1989EP0329990A1 Oil-well tubing joints with anti-corrosive coating
08/30/1989CN2043664U Casing centralising device against deformation with two centralising rings
08/29/1989US4862090 Measuring pad arrangement for a logging sonde
08/29/1989US4861209 Threaded coupling
08/29/1989US4861074 Tubing collar
08/29/1989US4860838 Latching bit sub
08/29/1989US4860656 Joining metal tubes in a liquid environment
08/24/1989DE3828481A1 Vorrichtung zum einzementieren eines gehaeusestranges in einem bohrloch Apparatus for Cement in a gehaeusestranges in a borehole
08/23/1989EP0329262A2 Adjustable stabiliser for use in drilling string
08/23/1989CN2043269U Hoop-spring type power clamp head braking mechanism
08/23/1989CN2043268U Concentric air lift reverse cyclic system of drilling machine
08/23/1989CN1034974A Stabilizer for drill stem
08/23/1989CN1034973A Method of isolation of troublesorne zones in well with profile patch liners
08/22/1989US4859200 Downhole electrical connector for submersible pump
08/22/1989US4858705 Assembly for making oriented bore-holes
08/22/1989US4858703 Self-propelled subsoil penetrating tool system
08/22/1989US4858688 Sucker rod guide
08/16/1989EP0328244A1 A drilling tool
08/16/1989EP0327661A1 Tool for aiding the fitting of a drill stabilizer to a drill collar
08/16/1989CN2042880U Diversion adapter
08/15/1989US4856827 Resilient ball joint support
08/15/1989US4856601 Drill bit with flow control means
08/15/1989US4856591 Method and apparatus for completing a non-vertical portion of a subterranean well bore
08/15/1989CA1258476A1 Pipe connector
08/10/1989WO1989007178A1 Method and device for trench-free laying of pipelines
08/08/1989US4854886 Electrical penetrator for hot, high pressure service
08/08/1989US4854781 Variable rigidity element for transfer column foot
08/08/1989US4854403 Stabilizer for deep well drilling tools
08/08/1989US4854399 Tubular element for use in a rotary drilling assembly
08/08/1989CA1258262A1 Apparatus and method for forming an anlarged underground arcuate bore and installing a conduit therein
08/01/1989US4852670 Drilling tool with an exchangeable feed helix
08/01/1989US4852668 Hydraulic drilling apparatus and method
08/01/1989US4852667 Pressure relief process for well-drilling
08/01/1989US4852655 Tubing coupling and method
08/01/1989US4852648 Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead
07/1989
07/27/1989WO1989006739A1 Method of constructing a well
07/27/1989WO1989006737A1 A drilling tool
07/26/1989EP0325338A2 Cable head shock isolation assembly
07/26/1989EP0325272A2 Drill bit with improved steerability
07/26/1989EP0203003B1 Remotely-controlled assembling device for two items
07/26/1989CN1034242A Insert type spring sleeve joint device for drill rods
07/26/1989CN1004895B Telecontrolled operating device
07/25/1989US4852069 Thin bed evaluation device
07/25/1989US4850440 Method and device for making a hole in the ground
07/25/1989CA1257794A1 Fiber optic connector assembly
07/19/1989EP0324442A1 Elliptical thread design
07/19/1989EP0324150A1 Drilling tool
07/18/1989US4848490 Downhole stabilizers
07/18/1989US4848488 Method and device for adjusting the path of a drilling tool fixed to the end of a set of rods
07/18/1989US4848480 Method and apparatus for wire line protection in a well
07/18/1989US4848455 Flexible drill rod feeding apparatus for quick rotary deep drilling
07/18/1989CA1257629A1 Threaded pipe connection
07/18/1989CA1257539A1 Flexible production riser assembly
07/13/1989WO1989006330A2 Tubular connection having a variable metal-to-metal seal width
07/13/1989DE3801824C1 Method and apparatus for the trenchless laying of supply lines
07/12/1989EP0323772A1 Drill string stabilizer with a clutch for rotation
07/11/1989US4846508 Tubular connector system
07/11/1989US4846507 Casing connector
07/11/1989US4846270 Trash barrier tool for wells
07/11/1989US4846269 Apparatus for monitoring a parameter in a well
07/04/1989US4844516 Connector for coil tubing or the like
07/04/1989US4844511 Tubular connector
07/04/1989US4844510 Tubular connector
07/04/1989US4844197 Hydraulic release system for use in a borehole apparatus
07/04/1989US4844186 Replaceable well drill bit
07/04/1989US4844184 Lock device for hollow stem augers
07/04/1989US4844183 Accelerator for fishing jar with hydrostatic assist
07/04/1989US4844182 Method for improving drill cuttings transport from a wellbore
07/04/1989US4844181 Floating sub
07/04/1989US4844179 Drill string stabilizer
07/04/1989US4844178 Drilling device having a controlled path
07/04/1989US4844157 Jar accelerator
07/04/1989US4843896 Probe for internal bore inspection
06/1989
06/27/1989US4842207 Device for detecting and measuring the tension on a cable
06/27/1989US4842083 Drill bit stabilizer
06/27/1989US4842082 Variable outside diameter tool for use in pikewells
06/27/1989US4842059 Flex joint incorporating enclosed conductors
06/27/1989CA1256326A1 Unitized tlp anchor template with elevated well template
06/21/1989EP0321381A1 Tubular connector system
06/21/1989CN2039736U Anti-deflection wearing device for roll type pumping rod
06/21/1989CN2039735U 快速接头 Quick Connector
06/20/1989CA1340026E Tubular connection
06/20/1989CA1256144A1 Tubular connection