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)
08/1982
08/24/1982USRE31016 Anti-friction sucker rod guide assembly
08/24/1982US4346256 Conduit in supplying electrical power and pressurized fluid to a point in a subterranean well
08/24/1982CA1130271A1 Mounting and shock absorber assembly for borehole telemetry apparatus
08/19/1982WO1982002777A1 Toroidal coupled telemetry apparatus
08/19/1982WO1982002754A1 Insulated drill collar gap sub assembly for a toroidal coupled telemetry system
08/19/1982WO1982002735A1 Rock drill
08/18/1982EP0058061A2 Tools for underground formations
08/17/1982US4344718 Cold weather coupling device
08/17/1982US4344488 Charged aerosol petroleum recovery method and apparatus
08/10/1982US4343518 Rod guide apparatus
08/10/1982US4343369 Apparatus for drilling straight portion of a deviated hole
08/10/1982CA1129340A1 Hydraulic tubing tensioner
08/04/1982EP0056806A1 Device for recovering heat from underground water and/or from the soil adjoining the underground water
08/03/1982CA1128927A1 Drilling stabilizer
08/03/1982CA1128925A1 Variable angle bent sub for directional drilling
07/1982
07/28/1982EP0056506A1 Stabilizing tool for earth boring drill strings and method of using same
07/20/1982US4340259 Wear bushing
07/20/1982CA1128034A1 Kelly drive bushing adapter
07/13/1982US4339006 Method and apparatus for mine roof drilling
07/13/1982CA1127565A1 Flexible transmission line
07/13/1982CA1127433A1 Rock bolt and installation system
07/06/1982USRE30988 Well tool
07/06/1982US4337970 Universal joint for multiple conduit system
07/06/1982US4337969 Extension member for well-logging operations
07/06/1982US4337563 Method of assembling multiple wall drill pipe
06/1982
06/23/1982EP0054091A1 Compression shock absorber device
06/22/1982US4335979 Offshore tower with ball and socket joint having fluid flow passage
06/22/1982CA1126038A1 Vertically moored platform anchoring
06/15/1982CA1125811A1 Method and apparatus for connecting steel pipe sections
06/08/1982US4333528 Seal assembly releasing tool
06/02/1982EP0052941A1 Tube material for sour wells of intermediate depths
06/01/1982US4332509 Riser pipe system for collecting and raising petroleum produced from an underwater deposit
06/01/1982US4332502 Apparatus for use in drilling
06/01/1982US4332401 Insulated casing assembly
05/1982
05/25/1982US4331006 Shock absorber assembly
05/18/1982US4330141 Adjustable pipe union
05/18/1982US4330043 Keyseat wiper
05/18/1982CA1123822A1 Insert for tool wear surfaces and method of manufacture
05/18/1982CA1123664A1 Fiberglass sucker rod construction
05/12/1982EP0051091A1 Riser pipe assembly for use in production systems
05/11/1982US4329077 Underground pipe pusher
05/11/1982US4328839 Flexible drill pipe
05/04/1982CA1123051A1 Pipe section for use in a borehole
04/1982
04/29/1982WO1982001393A1 Mudline suspension system
04/27/1982US4326595 Method for drilling deviated wells into an offshore substrate
04/27/1982CA1122424A1 Thread structure for percussion drill elements
04/20/1982US4325438 Lengthening drill string containing an instrument
04/20/1982US4325233 Kelly and kelly drive bushing
04/14/1982EP0049668A2 Method and apparatus for conducting logging or perforating operations in a borehole
04/06/1982US4323285 Dual thrust bearing for a shaft
04/06/1982US4323131 Removable anti-wear insert
04/06/1982US4323128 Spring adjustment system for drill string tool
03/1982
03/30/1982CA1120918A1 Roof drill bit with hexagonal body portion
03/16/1982US4319649 Stabilizer
03/16/1982US4319648 Process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein
03/16/1982CA1119950A2 Coiled tubing apparatus
03/09/1982US4319240 Electrical connector for borehole telemetry apparatus
03/09/1982CA1119464A1 Sucker rod and coupling therefor
03/02/1982US4317585 Torqued drill pipe identification
03/02/1982US4317493 Kelly drive bushing adapter
03/02/1982US4317492 Method and apparatus for drilling horizontal holes in geological structures from a vertical bore
03/02/1982US4317491 Wireline protector
02/1982
02/23/1982US4317174 Riser angle positioning system and process
02/23/1982CA1118755A1 Reverse action auger
02/16/1982US4315709 Apparatus for transporting the male ends of threaded tubing, pipe, or the like
02/10/1982EP0045724A1 Joint with clamping strip
02/10/1982EP0045651A2 Apparatus and method for supporting a tubular riser
02/10/1982EP0045632A1 Flexible pipe
02/09/1982US4315099 Flexible transmission line for a fluid and for electric signals
01/1982
01/27/1982EP0044778A2 Joint for pipes intended in particular for the petroleum industry
01/27/1982EP0044706A2 Method and apparatus for forming and using a bore hole
01/26/1982US4312415 Reverse circulating tool
01/26/1982CA1117004A1 Petroleum production method
01/21/1982WO1982000171A1 A drill steel guiding and centralizing mechanism
01/20/1982EP0044231A1 Flexible pipe joint
01/19/1982CA1116591A1 Earth boring apparatus
01/12/1982US4310059 Composite heavy metal drill collar
01/12/1982US4310057 Apparatus for extracting subterranean gas samples
01/05/1982US4308917 Buoyant tubulars and method for installing same in a well bore
12/1981
12/29/1981US4307902 Riser connector
12/22/1981US4306620 Tri-spacer
12/22/1981CA1114691A1 Surface smoothed tool joint hardfacing
12/15/1981US4305277 Hydrostatic tester for plastic lined pipe and fiberglass pipe
12/08/1981US4304452 Fluid flushed underwater electrical connector
12/08/1981US4304451 Interconnection technique for downhole instrumentation
12/08/1981US4304428 Tapered screw joint and device for emergency recovery of boring tool from borehole with the use of said joint
12/08/1981US4304311 Drill string stabilizer having easily removed hard surface inserts
12/08/1981CA1113920A1 Product provided with sound damping means
12/01/1981US4303138 Earth drilling lubricated hydraulic shock absorber and method
11/1981
11/24/1981US4301876 Non-rotating stabilizer for raise boring
11/17/1981US4300636 Constant bottom contact tool
11/17/1981CA1112637A1 Downhole weight control device for impact rock drilling tool
11/12/1981WO1981003157A1 Submerged buoyant offshore drilling and production tower
11/11/1981EP0039589A2 Submerged buoyant offshore drilling and production tower and apparatus and method for installing same
11/10/1981US4299510 Drill steel and method of fabrication
11/10/1981CA1112262A1 Pipe connectors
11/10/1981CA1112232A1 Flexible shaft and roof drilling system
11/10/1981CA1112157A1 Well tubing coupling system
11/10/1981CA1112060A1 Alignment device for submerged tube ends by means of a surface support
11/03/1981US4298221 Pipe connectors
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