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)
11/1999
11/11/1999WO1999057413A1 Composite hybrid riser
11/11/1999WO1999049171A3 Threaded assembly of metal tubes designed to contain a corrosive fluid
11/11/1999WO1999043974A9 Threaded connection for internally clad pipe
11/11/1999CA2331301A1 Apparatus, system and method for connecting coiled tubing to a member
11/11/1999CA2331256A1 Flexible armored communication cable and method of manufacture
11/10/1999EP0954674A1 Drilling assembly with a steering device for coiled-tubing operations
11/10/1999EP0954673A2 Apparatus for directing and steering the foremost part of a drillpipe at drillings
11/10/1999CN2348090Y Hot-pipe compound electric heating sucker rod
11/10/1999CN2348089Y Locking separating and jointing device
11/09/1999US5980157 Ground-boring machine
11/09/1999US5979943 Shearable completion riser joint
11/09/1999US5979881 Apparatus for manufacturing an insulated conductor in metal tubing
11/09/1999US5979577 Stabilizing drill bit with improved cutting elements
11/09/1999US5979552 Dual annulus production tool
11/09/1999US5979550 PC pump stabilizer
11/04/1999DE19649572C2 Bohrvorrichtung Drilling device
11/03/1999EP0953724A2 End connector for composite coiled tubing
11/03/1999CN2346926Y Bull rod tenon wedge driving joint of down-the-hole drill
11/03/1999CN2346925Y Fully enclosed anti-theft light weight eccentric christmas tree wellhead assembly
11/02/1999USRE36362 Polymer liners in rod pumping wells
11/02/1999CA2219175C Cam fluid transfer system
10/1999
10/29/1999CA2270491A1 End connector for composite coiled tubing
10/28/1999WO1999054197A1 Submerged pipeline manifold for offloading mooring buoy and method of installation
10/28/1999DE19814232C1 Production of ground bores and-or destruction of old pipe conduits underground
10/28/1999CA2325133A1 Submerged pipeline manifold for offloading mooring buoy and method of installation
10/27/1999EP0952301A1 Method and apparatus for drilling an offshore underwater well
10/27/1999EP0952300A1 Method and apparatus for drilling a plurality of offshore underwater wells
10/27/1999EP0951623A2 Connector
10/27/1999EP0811109A4 Metal coiled tubing with signal transmitting passageway
10/27/1999CN2345683Y Double-braided casing centralising device
10/27/1999CN2345682Y Once formed type spacing righting wax scraping device for sucker rod
10/27/1999CN2345681Y Ring-type double-wall spigot and socket wall riser
10/27/1999CN2345680Y Gravity compensator
10/27/1999CN2345679Y Underground travel increasing apparatus for sucker rod
10/27/1999CN2345678Y Dragable type water-stop oil extraction process pipe column
10/27/1999CN2345677Y Automatic water stop device for preventing water oozed when drilling construction at mine underground
10/26/1999US5974226 Heated power cable
10/26/1999US5973270 Wellbore cable protector
10/26/1999US5971443 Threaded joint for pipes
10/26/1999US5971075 Production riser equipped with a suitable stiffener and with an individual float
10/26/1999US5971072 Inductive coupler activated completion system
10/21/1999WO1999053232A1 Screw joint for oil well piping
10/21/1999WO1999053169A1 Coupling for drill pipes
10/21/1999DE19913016A1 Advancing pipes
10/20/1999EP0950793A2 Hydraulic operated impact drilling device
10/20/1999EP0795074B1 Method and apparatus for drilling with high-pressure, reduced solid content liquid
10/20/1999CN2344537Y Antifatigue screwed connection of petroleum drilling set
10/19/1999US5967816 Female wet connector
10/19/1999US5967699 Method and apparatus for launching a pig in a vertical riser pipe
10/19/1999US5967693 Adapters for auger drive shaft
10/19/1999US5967247 Steerable rotary drag bit with longitudinally variable gage aggressiveness
10/19/1999US5967246 Rotary drill bits
10/19/1999US5967245 Rolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting duty
10/19/1999CA2155912C Fixed offshore platform structures, using small diameter, tensioned, well casing tiebacks
10/19/1999CA2098722C Coupling apparatus
10/14/1999WO1999051851A1 Coil springs for cable support
10/13/1999EP0949441A1 Screw joint for oil well pipes and method of manufacturing same
10/13/1999EP0948703A2 Apparatus and method for expanding a liner patch; a stroke indicator; and a tubular patch
10/13/1999CN2343331Y 油管锚 Tubing Anchor
10/13/1999CN2343330Y Forged flexible integrated sucker rod
10/12/1999US5964486 Pipe connectors
10/12/1999US5964307 Shock tool for use in directional drilling
10/12/1999US5964297 Method of drilling in earth layers with a drill hammer
10/12/1999US5964294 Apparatus and method for orienting a downhole tool in a horizontal or deviated well
10/07/1999WO1999050528A1 Drillstring with stabilisers for re-entering a primary wellbore
10/07/1999WO1999050525A1 Retaining ring
10/07/1999WO1999050136A1 Mooring construction
10/07/1999WO1999037881A3 Tubing shoe
10/06/1999EP0947664A2 Method for monitoring a telescopic drill string and a protection device for a telescopic drill string
10/06/1999EP0947663A1 Apparatus for static earth boring
10/06/1999EP0757768B1 Device for permanent joining of tubes
10/06/1999CN2342087Y Anti-inclination coupling for pumping rod
10/06/1999CN1231017A Drill shank for drill drive
10/05/1999US5962819 Clamped receiver array using coiled tubing conveyed packer elements
10/05/1999US5960895 Apparatus for providing a thrust force to an elongate body in a borehole
10/05/1999US5960885 To run intervention equipment into a well during/after completion
10/05/1999US5960884 Gravel pack apparatus
10/05/1999US5960879 Methods of completing a subterranean well
10/05/1999CA2006927C Controlled path boring mountings with a variable angle elbow element and use thereof
09/1999
09/30/1999WO1999049257A1 Pipe coupling
09/30/1999WO1999049177A1 Rotating connector with compensating unit
09/30/1999WO1999049176A1 Thread joint for percussive drilling, male and female portion for forming part of the joint and method of manufacturing a product having thread for forming part of a thread joint for percussive drilling
09/30/1999WO1999049171A2 Threaded assembly of metal tubes designed to contain a corrosive fluid
09/30/1999DE19813680A1 Accommodation device with a thread for receiving tools
09/29/1999EP0945337A1 Mooring construction
09/29/1999CN2340890Y Pressure reducer at bottom of well
09/29/1999CN2340889Y Device for preventing casing from bias-wearing
09/28/1999US5957224 Double bit assembly and method of using the same
09/28/1999US5957221 Downhole core sampling and testing apparatus
09/28/1999US5957209 Latch and release tool connector and method
09/28/1999US5957198 Telescoping joint for use in conduit connected wellhead and zone isolating tool
09/28/1999US5957195 Wellbore tool stroke indicator system and tubular patch
09/28/1999US5957074 Mooring and riser system for use with turrent moored hydrocarbon production vessels
09/28/1999CA2190658C Hinged drilling tool
09/28/1999CA2172652C Combination fiber-optic/electrical conductor well logging cable
09/28/1999CA2160436C Threaded tube assembly
09/28/1999CA2073332C Centralizers for oil well casings
09/27/1999CA2262243A1 Method and apparatus for drilling a plurality of offshore underwater wells
09/27/1999CA2262240A1 Method and apparatus for drilling an offshore underwater well
09/23/1999WO1999047786A1 Two-step, differential diameter wedge threaded connector
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