Patents
Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800)
12/1979
12/04/1979US4176986 Subsea riser and flotation means therefor
12/04/1979US4176894 Internal electrical interconnect coupler
12/04/1979US4176714 Shock absorber for oil well pumping unit
12/04/1979CA1067397A1 Method and means for lining deep shafts
11/1979
11/27/1979US4175757 Sealant system for roof drilling apparatus
11/27/1979US4175619 Well collar or shoe and cementing/drilling process
11/27/1979CA1067065A1 Soft formation drill bit
11/14/1979EP0005384A1 Down-hole air hammer comprising a drill bit
11/13/1979US4173988 Pneumatically actuated thread protector for pipes
11/13/1979US4173804 Floating installation connected to a stationary underwater installation through at least one flexible pipe
11/06/1979US4173360 Flexible sealing joint
11/06/1979US4173130 Drilling shock sub
10/1979
10/30/1979CA1065300A1 Drill string shock absorber
10/23/1979US4171674 Fairing for pipes
10/23/1979US4171560 Method of assembling a wear sleeve on a drill pipe assembly
10/23/1979CA1065030A1 Cable protector
10/16/1979US4171187 Air injection sub
10/16/1979US4171031 Well logging instrument guide apparatus
10/16/1979US4171025 Hydraulic shock absorbing method
10/16/1979CA1064471A1 Underreaming tool with overriding extended arm retainer
10/16/1979CA1064469A1 Bit packer for dual tube drilling
10/02/1979US4169505 Kick-over apparatus
10/02/1979US4169503 Apparatus for generating a shock wave in a well hole
09/1979
09/25/1979US4168752 Flexible conduit for effecting lateral channelling in coal or oil shale beds
09/25/1979CA1063094A1 Extension rods used in percussive drilling
09/25/1979CA1063093A1 Drill crown coupling
09/25/1979CA1063017A1 Riser set-aside system
09/11/1979CA1062240A1 Spring adjustment system for drill string tool
09/11/1979CA1062154A1 Centering devices for cleaning tools and the like
09/11/1979CA1062147A1 Wireline latching apparatus and method of use
09/04/1979CA1061772A1 Method and means for effecting lateral channelling in coal or oil shale beds
08/1979
08/28/1979US4165891 Breech block connector
08/28/1979US4165626 Wash water supplying drive head and scraper and cutter assembly
08/28/1979CA1061323A1 Rock-drilling bit for percussion hammers
08/21/1979US4164978 Oil extraction method
08/21/1979CA1060880A1 Shock absorbing rotary drive coupling
08/21/1979CA1060782A1 Well centralizer and method of making
08/14/1979US4164257 Internal protection of well casing
08/07/1979US4163478 Self aligning impact rock drilling tool
08/07/1979CA1059841A1 Fairing for pipes
07/1979
07/31/1979US4162705 Center section for oil well perforation testing device
07/31/1979US4162619 Drill string shock sub
07/31/1979CA1059614A1 Ultrasonic inspection apparatus for well operations
07/31/1979CA1059613A1 Ultrasonic inspection apparatus for vertical members
07/31/1979CA1059551A1 Dovetail connection for pin and box joints
07/24/1979CA1058833A1 Well line strap connection
07/17/1979US4161332 Dovetail connection for pin and box joints
07/17/1979CA1058607A1 Detachable drill bit for impact drilling
07/10/1979US4160622 Portable water sampling apparatus
07/03/1979US4160063 Method for preventing the adherence of oil to surfaces
06/1979
06/26/1979CA1057277A2 Replaceable drive stem for a raise drill
06/19/1979CA1056807A1 Wellbore telemetry system
06/19/1979CA1056722A1 Marine riser system and method for installing the same
06/12/1979CA1056364A1 Hydraulic shock absorber
06/12/1979CA1056225A1 Drilling system for deep water offshore locations
05/1979
05/29/1979US4156374 Pre-formed wear pads for drill stabilizers
05/29/1979CA1055476A1 Drill pipe protector
05/22/1979US4155673 Floating structure
05/15/1979US4154466 Pipe section and coupling
05/15/1979US4154310 Method and equipment for drilling wells
05/15/1979US4154302 Cable feed-through method and apparatus for well head constructions
05/08/1979US4153283 Casing joint
05/08/1979US4153120 Change in length of drill string while instrument remains therein
05/08/1979US4153119 Directional drilling apparatus
05/08/1979US4153112 Flex joint
05/08/1979CA1054139A1 Electrical kelly cock assembly
05/01/1979US4151889 Rock-drilling bit for percussion hammers
05/01/1979US4151865 Flexible tube particularly for drillings, and a process for manufacturing said tube
05/01/1979CA1053577A1 Knockdown centralizer
04/1979
04/24/1979CA1053220A1 Composite extender rod for out-of-the-hole hammer drilling
04/17/1979US4149391 Flexible drill pipe
04/03/1979US4147454 Method of and apparatus for construction of pipes for marine use, as for ocean mining and the like
04/03/1979CA1051863A1 Drill string shock absorbing apparatus
03/1979
03/27/1979US4146060 Drill pipe wear belt assembly
03/20/1979US4145034 Heat shield for a drill string shock absorbing apparatus
03/13/1979US4143722 Downhole flexible drive system
03/13/1979US4143713 Self-centering basket
03/13/1979CA1050418A1 Oil well tool with packing means
03/06/1979US4142820 Pivotal connecting device for pivotally connecting an off-shore articulated column structure to a sea bottom
03/06/1979US4142596 Drive link permitting feed and rotation of drills of various sizes
03/06/1979US4142593 Raise drill inner yoke bridge
03/06/1979US4142584 Termination means for a plurality of riser pipes at a floating platform
02/1979
02/27/1979US4141386 Blast joint
02/27/1979US4141225 Articulated, flexible shaft assembly with axially lockable universal joint
02/20/1979US4139994 Vibration isolator
02/20/1979CA1048996A1 Raise drilling bit with detachable stem
02/13/1979US4139334 Cable string for downhole pumps
02/13/1979US4139024 Thermal insulation structure
02/06/1979US4138148 Split-ring riser latch
02/06/1979US4137762 Wireline apparatus for use in earth boreholes
01/1979
01/30/1979US4136996 Directional drilling marine structure
01/23/1979US4135577 Tool centralizer guide having a J-groove release
01/09/1979US4133516 Shock absorber for well drilling pipe
01/09/1979US4133397 Drilling with multiple in-hole motors
01/09/1979US4133395 Earth boring assembly with drag pipe
01/09/1979US4133095 Treating, including induction heating of well pipe connections
12/1978
12/26/1978US4131167 Releasable drill string stabilizer
12/26/1978US4131165 Hammer drill
12/26/1978US4131005 Tubular member straightening, descaling and hydraulic testing apparatus
12/26/1978US4130995 VMP riser horizontal bearing