| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 09/16/1980 | CA1085720A1 Subsea valve apparatus having hydrate inhibiting injection |
| 09/16/1980 | CA1085719A1 Guidelineless subsea wellhead entry/reentry system |
| 09/02/1980 | US4220421 Subsea wellhead protective enclosure |
| 08/26/1980 | US4219237 Method for maximizing shale oil recovery from an underground formation |
| 08/26/1980 | US4219223 Underwater multiple hydraulic line connector |
| 08/26/1980 | CA1084412A1 Lubricator |
| 08/12/1980 | US4216835 System for connecting an underwater platform to an underwater floor |
| 08/12/1980 | US4216827 Fluid pressure set and released well packer apparatus |
| 08/12/1980 | CA1083479A1 Apparatus and method of connecting a flexible line to a subsea station |
| 08/05/1980 | US4215749 Gate valve for shearing workover lines to permit shutting in of a well |
| 08/05/1980 | US4215747 Blowout preventer with tubing aligning apparatus |
| 08/05/1980 | CA1083034A1 Well latch |
| 08/05/1980 | CA1083032A1 Steam injection system for use in a well |
| 07/29/1980 | US4214843 Subsea grout distributor |
| 07/29/1980 | US4214778 Holddown mechanism for a tubing hanger in a wellhead |
| 07/29/1980 | US4214629 Well packer bypass valve seal assembly |
| 07/29/1980 | US4214628 Multiple-purpose underground fluid injection system |
| 07/29/1980 | US4214605 Actuator for wireline blowout preventer |
| 07/29/1980 | CA1082590A1 Wellhead apparatus |
| 07/15/1980 | US4212562 Method and apparatus for leveling templates for offshore subterranean wells |
| 07/15/1980 | US4212352 Gripping member for well tools |
| 07/15/1980 | CA1081613A1 Collar lock and seal assembly for well tools |
| 07/15/1980 | CA1081609A1 Seal adaptor alignment means and landing tool and method |
| 07/15/1980 | CA1081608A1 Selective wellbore isolation using buoyant ball sealers |
| 07/15/1980 | CA1081607A1 Flexible conduit injection system |
| 07/08/1980 | US4211280 Downhole surge tools, method and apparatus |
| 07/08/1980 | US4211279 Plunger lift system |
| 07/08/1980 | CA1081118A1 Blowout preventer packing unit with slanted reinforcing inserts |
| 07/08/1980 | CA1081116A1 Steam deflector for use in a well |
| 07/01/1980 | US4209891 Apparatus and method for positioning one part relative to another part |
| 07/01/1980 | CA1080615A1 Rotating blowout preventer apparatus |
| 07/01/1980 | CA1080613A1 Well treatment fluid diversion with low density ball sealers |
| 07/01/1980 | CA1080612A1 Terminating the flow of fluids from uncontrolled wells |
| 06/17/1980 | US4208056 Rotating blowout preventor with index kelly drive bushing and stripper rubber |
| 06/17/1980 | US4207921 Header assembly and jetting adapter for well point pumping apparatus |
| 06/11/1980 | EP0011741A1 Sealing ring for well-heads |
| 06/10/1980 | US4206929 Blow out preventer |
| 06/10/1980 | US4206810 Method and apparatus for indicating the downhole arrival of a well tool |
| 06/03/1980 | US4205722 Pump support adapter |
| 05/27/1980 | US4204690 Sealing retaining ring assembly |
| 05/20/1980 | US4203472 Device for stopping fluid flow from a pipe |
| 05/14/1980 | EP0010906A1 Bolting system for blow out preventers |
| 05/13/1980 | US4202410 Seal testing arrangement for wellheads |
| 05/13/1980 | US4202376 Closing cap on well casings in well openings |
| 05/06/1980 | US4201267 Wild well control method and apparatus |
| 05/06/1980 | US4201074 Submersible pipe installation systems |
| 04/29/1980 | US4200312 Subsea flowline connector |
| 04/29/1980 | CA1076552A1 Process and installation for drilling holes in the earth's crust under freezing conditions |
| 04/22/1980 | US4199275 Articulated column for the exploitation of marine bottom resources, comprising pipings connectable between the column and its base |
| 04/22/1980 | CA1076023A1 Ball sealer diversion of matrix rate treatments of a well |
| 04/08/1980 | CA1075149A1 Remote automatic make-up stab-in sealing system |
| 04/02/1980 | EP0009364A2 Apparatus for remote hydraulic control of a subsea well device |
| 04/01/1980 | US4195690 Method for placing ball sealers onto casing perforations |
| 04/01/1980 | CA1074584A1 Preventing freeze-up of ice holes |
| 03/25/1980 | US4194568 Disconnectable riser columns for under water oil wells |
| 03/25/1980 | US4194561 Placement apparatus and method for low density ball sealers |
| 03/25/1980 | CA1074226A1 Marine riser connector |
| 03/25/1980 | CA1074225A1 Marine riser connector |
| 03/18/1980 | US4193574 Well shut off device |
| 03/18/1980 | US4193455 Split stack blowout prevention system |
| 03/18/1980 | US4193307 Apparatus for indicating subsea well head pressure |
| 03/18/1980 | CA1073811A1 Marine riser tool |
| 03/18/1980 | CA1073810A1 Annular blowout preventer |
| 03/18/1980 | CA1073809A1 Well packer including anti-extrusion washer |
| 03/11/1980 | US4192517 Anti-scale stuffing box improvement |
| 03/11/1980 | US4192384 Subsea production chamber |
| 03/11/1980 | US4192383 Offshore multiple well drilling and production apparatus |
| 03/11/1980 | US4192379 Blowout preventer and method of insuring prevention of fluid leaks out of a wellhead |
| 03/11/1980 | US4192378 Port valve isolation packer |
| 03/11/1980 | US4192377 Bottom valve tripping and liquid channeling device for an automated bailer of shallow wells |
| 03/11/1980 | US4192376 Shutting-off device |
| 03/11/1980 | US4192375 Gravel-packing tool assembly |
| 03/11/1980 | US4192181 Casing assembly probes |
| 03/11/1980 | CA1073347A1 Method of completion of offshore oil wells and start up structure therefor |
| 03/04/1980 | US4191493 Method for the production of a cavity limited by a flexible material |
| 03/04/1980 | US4191492 Method of installing a liner in a large diameter borehole |
| 03/04/1980 | US4191383 Inflatable packer and method of constructing same |
| 03/04/1980 | US4191266 Process and installation for drilling holes in the earth's crust under freezing conditions |
| 03/04/1980 | US4191256 Subsea flowline connector |
| 03/04/1980 | US4191254 Apparatus and method for plugging voids in a ground stratum |
| 03/04/1980 | US4191250 Technique for cementing casing in an offshore well to seafloor |
| 02/26/1980 | US4190300 Bearing for liner-hanger assembly |
| 02/26/1980 | US4190270 Tubing hanger for temperature variations and extremes |
| 02/26/1980 | US4190112 Pump down wipe plug and cementing/drilling process |
| 02/26/1980 | US4190111 Well cementing/plug drilling apparatus and improved cementing and drilling process |
| 02/26/1980 | US4190107 Well bore apparatus with hydraulically releasable tubing seal unit |
| 02/19/1980 | US4189255 Sea-floor shoring cellar and method of installing same |
| 02/19/1980 | US4188999 Expendable plug and packer assembly |
| 02/19/1980 | US4188998 Well packer bypass valve seal assembly |
| 02/12/1980 | US4188084 Underwater electrical connectors |
| 02/12/1980 | US4187909 Method and apparatus for placing buoyant ball sealers |
| 02/12/1980 | US4187906 Well bore apparatus with annulus pressure releasable tubing seal unit |
| 02/12/1980 | US4187883 Multiple position valve |
| 02/12/1980 | CA1071531A1 Method of fracturing a subterranean formation |
| 02/06/1980 | EP0007825A2 Underwater drilling method and apparatus relating thereto |
| 02/05/1980 | CA1071097A1 Ram blocks for hydrogen sulfide service |
| 02/05/1980 | CA1070966A1 Subsea station |
| 01/29/1980 | US4185856 Pipe joint with remotely operable latch |
| 01/29/1980 | US4185694 Marine riser system |
| 01/29/1980 | US4185690 Backsurge well cleaning tool |