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)
12/2000
12/21/2000WO2000077431A2 Expandable connector
12/20/2000EP1060321A1 An axle, a friction reducing fitting and an axle installation method
12/20/2000CN2411335Y Centralising device for sucker rod
12/19/2000US6161635 Drilling system drive steel
12/19/2000US6161633 Apparatus for boring through a solid material
12/19/2000US6161620 Deepwater riser system
12/19/2000US6161619 Riser system for sub-sea wells and method of operation
12/19/2000CA2015844C Method and device for joining well tubulars
12/14/2000DE19927020A1 Buried drainage shaft and drivage uses free-holed telescoping shaft elements raised or lowered or axially turned to line up with house and drain line connections.
12/13/2000EP1058800A1 Heat insulating device and method for insulating at least a submarine pipeline at great depth
12/13/2000EP1058767A1 Centralizer
12/13/2000CN2410412Y Casing pressure-test short joint
12/13/2000CN2410411Y Knuckle thread tooth type joint for oil well pipe
12/13/2000CN2410410Y High efficient injection-production dual-purpose energy-saving oil pipe for thickened oil
12/13/2000CN1276514A Spacing locator for U-bend
12/12/2000US6158785 Multi-start wedge thread for tubular connection
12/12/2000US6158532 Subassembly electrical isolation connector for drill rod
12/12/2000US6158529 Rotary steerable well drilling system utilizing sliding sleeve
12/12/2000US6158276 Apparatus for measuring and recording data from boreholes
12/12/2000CA2017324C Apparatus for testing an oil well, and corresponding method
12/07/2000WO2000050729A3 Mills for wellbore operations
12/07/2000WO2000047860A3 Directional drilling apparatus
12/07/2000CA2310878A1 Lubrication and self-cleaning system for expansion mandrel
12/06/2000EP1058041A2 Pipe coupling with longitudinal force-fit
12/06/2000EP1056968A1 Threaded connection for internally clad pipe
12/06/2000EP1056925A1 Riser pipe construction and module therefor
12/06/2000CN2409332Y Remote-regulating centralising device
12/06/2000CN2409331Y Buttress thread joint for oil pipe and sleeve
12/05/2000US6157761 Reinforced composite rod
12/05/2000US6155748 Deep water riser flotation apparatus
12/05/2000US6155349 Flexible wellbore mill
12/05/2000US6155344 Downhole tool connection for live well deployment
12/03/2000CA2309798A1 Excavating tool
11/2000
11/28/2000US6152223 Rod guide
11/28/2000US6152220 Down-hole tool with centralising component
11/28/2000US6151810 Connecting device of soil removing member for excavator
11/28/2000CA2128903C Multi-arm stabilizer for a drilling or boring device
11/23/2000WO2000070256A1 A flexible lightweight composite pipe for high pressure oil and gas applications
11/23/2000WO2000047861A3 Hydraulic underreamer and sections for use therein
11/23/2000WO2000029713A3 Method and apparatus for connecting a lateral branch liner to a main well bore
11/23/2000WO2000029710A3 Wellbore flow control device
11/22/2000EP0753095B1 Casing tube with casing shoe
11/22/2000CN2406862Y Continuous sucker rods operating vehicle
11/21/2000US6148935 Joint for use in a directional boring apparatus
11/21/2000US6148934 Coupling piece for use at simultaneous earth and/or rock drilling with an upper rotary percussion device and a lower percussion device
11/21/2000US6148933 Steering device for bottomhole drilling assemblies
11/21/2000US6148925 Method of making a conductive downhole wire line system
11/21/2000US6148922 Slip joint
11/21/2000US6148866 Composite spoolable tube
11/21/2000CA2163460C A device for coil tubing operations
11/16/2000WO2000068514A1 Partial helical strake system for vortex-induced-vibration suppression
11/16/2000WO2000067930A1 Corrugated thick-walled pipe for use in wellbores
11/15/2000EP1052368A1 Assembly of a shaft and a boss connectable to it
11/15/2000EP0920569B1 Centralizer
11/15/2000CN2406055Y Back-torque joint
11/14/2000US6146052 Dynamic control cable for use between a floating structure and a connection point on the seabed
11/14/2000US6145603 Extension drilling system
11/14/2000US6145597 Method and apparatus for retaining a cable in a conduit
11/09/2000WO2000066929A1 Rotationally locked tool joint for connecting drill pipe sections together
11/09/2000WO2000066928A1 Threaded connection with high compressive rating
11/09/2000WO2000066879A1 Method and multi-purpose apparatus for control of fluid in wellbore casing
11/09/2000WO2000066874A1 A casing centralizer and casing accessory equipment
11/08/2000EP0793763B1 Coupling for anchor bars
11/08/2000CN2405001Y Circular screen joint for oil, sleeve tube
11/07/2000US6143988 Coiled tubing supported electrical cable having indentations
11/07/2000US6142707 Direct electric pipeline heating
11/07/2000US6142237 Method for coupling and release of submergible equipment
11/07/2000US6142236 Method for drilling and completing a subsea well using small diameter riser
11/07/2000US6142235 Bottom-supported guidance device for alignment of multiple wellbores in a single conductor
11/07/2000US6142230 Wellbore tubular patch system
11/02/2000WO2000065268A1 Thread form with multifaceted flanks
11/02/2000WO2000065192A1 Percussion drilling apparatus and drilling tube
11/02/2000EP1048820A2 Method for exploiting geothermal energy and heat exchanger apparatus therefor
11/02/2000EP1047859A1 Extruded casing centralizer
11/02/2000EP1047748A1 Conductive medium for openhole logging and logging while drilling
11/02/2000EP0760898B1 Double walled insulated tubing and method of installing same
11/02/2000DE19923555C1 Directional borehole drilling device uses radially adjustable steering head incorporated in driven drill rod for determining drilling direction
11/02/2000CA2367747A1 Percussion drilling apparatus and drilling tube
10/2000
10/31/2000US6138780 Drag bit with steel shank and tandem gage pads
10/31/2000US6138777 Hydraulic underreamer and sections for use therein
10/31/2000US6138765 Packer assembly for use in a submergible pumping system
10/31/2000CA2190971C Double walled insulated tubing and method of installing same
10/26/2000WO2000063598A1 Scr top connector
10/26/2000DE19924035C1 Rapid replacement system for force transfer rods has cylindrical bolt with stepped bore, sliding pressure plate above protrusion, coil spring between pressure plate and stepped part of bolt
10/26/2000DE19918530A1 Method to releasably connect ends of sequentially-arranged rods or tubes of boring rod sections; involves connecting ends of rods at angle and pivoting or sliding them into position without rotating
10/26/2000CA2536620A1 Expandable connector for borehole tubes
10/26/2000CA2536385A1 Expandable connector for borehole tubes
10/25/2000EP1046779A1 Threaded pipe connection
10/25/2000EP1045958A1 A drill pipe and method of forming and reconditioning a drill pipe
10/25/2000CN2402795Y High-temp. thermal insulation centralizer
10/24/2000US6135215 Tool string apparatus for lateral borehole formation
10/24/2000US6135209 Method for installing a water well pump
10/20/2000CA2273372A1 Well tool
10/19/2000WO2000061915A1 Method of creating a wellbore in an underground formation
10/19/2000WO2000061433A1 System for reducing vortex induced vibration of a marine element
10/19/2000WO2000061310A1 Process for the manufacture of a cylindrical pipe
10/19/2000CA2369266A1 Process for the manufacture of a cylindrical pipe
10/18/2000EP1044315A1 Apparatus for facilitating removal of a casing of an overburden drilling equipment from a bore
10/18/2000EP1044314A1 Drilling system including eccentric adjustable diameter blade stabilizer
10/18/2000EP1044247A1 Water soluble invert emulsions
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