| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 01/29/1980 | US4185689 Casing bridge plug with push-out pressure equalizer valve |
| 01/29/1980 | US4185652 Subaqueous sequence valve mechanism |
| 01/29/1980 | US4185541 Method and apparatus for hydraulically controlling subsea well equipment |
| 01/22/1980 | US4184515 Retrievable plug for offshore platforms having shear type retaining means |
| 01/22/1980 | CA1070354A1 Device for coupling small diameter tubes to a universal joint |
| 01/22/1980 | CA1070236A2 Process for cementing casing in a well |
| 01/22/1980 | CA1070235A1 Process for cementing casing in a well |
| 01/15/1980 | US4183189 Flange connector |
| 01/08/1980 | US4182415 Tubing string rod running nipple |
| 01/01/1980 | US4181484 Device for forming underground pipelines |
| 01/01/1980 | US4181175 Control line exiting coupling |
| 01/01/1980 | CA1069044A Shear rams for hydrogen sulfide service |
| 12/25/1979 | US4180132 Service seal unit for well packer |
| 12/18/1979 | US4178992 Metal seal tubing plug |
| 12/18/1979 | US4178967 Retrievable plug for offshore platforms |
| 12/13/1979 | WO1979001087A1 Fluid pressure set and released well packer apparatus |
| 12/11/1979 | US4178112 Plat-gard leg closure |
| 12/11/1979 | US4178110 Liner for large diameter borehole |
| 12/04/1979 | US4176717 Cementing tool and method of utilizing same |
| 12/04/1979 | US4176715 High temperature well packer |
| 12/04/1979 | CA1067399A1 Well flow control system and method |
| 12/04/1979 | CA1067397A1 Method and means for lining deep shafts |
| 11/27/1979 | US4175619 Well collar or shoe and cementing/drilling process |
| 11/13/1979 | US4174112 Seal assembly |
| 11/13/1979 | US4174011 Subsea drilling template with carousel guidance system |
| 11/13/1979 | US4174000 Method and apparatus for interfacing a plurality of control systems for a subsea well |
| 10/30/1979 | CA1065247A1 Method for sealing a permeable subterranean formation |
| 10/23/1979 | US4171922 Process for positioning and joining ducts of a block |
| 10/23/1979 | CA1064822A1 Well packer including combination anti-extrusion and segment ring actuating washer |
| 10/23/1979 | CA1064821A1 Expansion packer |
| 10/16/1979 | US4171019 Apparatus and method for re-entering and cementing an underwater well |
| 10/16/1979 | CA1064469A1 Bit packer for dual tube drilling |
| 10/16/1979 | CA1064274A1 Drilling structure for drilling in the ocean floor |
| 10/02/1979 | US4169507 Underwater well apparatus |
| 10/02/1979 | US4169504 Fluid introduction unit for wells |
| 09/25/1979 | CA1063017A1 Riser set-aside system |
| 09/18/1979 | CA1062448A1 Spacer fluid for spacing drilling muds and cement and methods of their use |
| 09/11/1979 | US4167215 Guidelineless subsea wellhead entry/reentry system |
| 09/04/1979 | CA1061714A1 Method for selectively retrieving a plurality of well packers |
| 09/04/1979 | CA1061707A1 Stroke actuated well testing tool |
| 08/28/1979 | US4165891 Breech block connector |
| 08/28/1979 | CA1061246A2 Weight and pressure operated well testing apparatus and its method of operation |
| 08/28/1979 | CA1061245A2 Weight and pressure operated well testing apparatus and its method of operation |
| 08/28/1979 | CA1061244A2 Weight and pressure operated well testing apparatus and its method of operation |
| 08/28/1979 | CA1061243A2 Weight and pressure operated well testing apparatus and its method of operation |
| 08/28/1979 | CA1061242A2 Weight and pressure operated well testing apparatus and its method of operation |
| 08/28/1979 | CA1061098A1 Plugging subterranean regions with acrylic-epoxy resin-forming emulsions |
| 08/21/1979 | US4165108 Device for connecting tubes having a small cross-section perpendicularly to a universal coupling element |
| 08/21/1979 | US4164980 Well cementing method and apparatus |
| 08/21/1979 | US4164977 Well latch |
| 08/21/1979 | CA1060791A1 Blowout preventer ram lock and locking method |
| 08/21/1979 | CA1060790A1 Negative energy power supply |
| 08/21/1979 | CA1060781A1 Multiple stage cementing of well casing in subsea wells |
| 08/14/1979 | USRE30070 Apparatus for treating wells |
| 08/07/1979 | US4163562 Inflatable packer |
| 08/07/1979 | US4163477 Method and apparatus for closing underwater wells |
| 08/07/1979 | CA1059897A1 Mechanically set liner hanger and running tool |
| 07/31/1979 | US4162705 Center section for oil well perforation testing device |
| 07/31/1979 | US4162704 Pressure control device |
| 07/24/1979 | US4162079 Resilient packing ring and assembly |
| 07/24/1979 | US4161807 Apparatus and method for locking load supporting structures together |
| 07/24/1979 | CA1059022A1 Apparatus and method for connecting a tubing string to downhole well equipment |
| 07/17/1979 | US4161319 Expansion packer |
| 07/10/1979 | US4160482 Ball sealer diversion of matrix rate treatments of a well |
| 07/03/1979 | US4159643 Method of and apparatus for measuring bottom hole well pressure |
| 07/03/1979 | US4159637 Hydraulic test tool and method |
| 07/03/1979 | CA1057653A1 Hydraulic operated casing hanger running tool |
| 07/03/1979 | CA1057648A1 Plugging high permeability earth strata |
| 06/26/1979 | US4159135 Flange protector |
| 06/26/1979 | CA1057191A1 Installation and control methods of offshore wellhead valve assemblies and tools therefor |
| 06/26/1979 | CA1057092A1 Tubular one-way closure for injecting a material into a hole |
| 06/19/1979 | US4158510 Cementing skid with recirculating mixer |
| 06/19/1979 | US4158388 Method of and apparatus for squeeze cementing in boreholes |
| 06/19/1979 | CA1056721A1 Blow out preventer |
| 06/19/1979 | CA1056716A1 System for preventing hydrate plug formation in gas wells |
| 06/12/1979 | CA1056363A1 Method and apparatus for controlling a well during drilling operations |
| 06/12/1979 | CA1056304A1 Composite multiple zone test tool |
| 06/05/1979 | US4157186 Heavy duty rotating blowout preventor |
| 06/05/1979 | US4157116 Process for reducing fluid flow to and from a zone adjacent a hydrocarbon producing formation |
| 05/29/1979 | US4156460 Retrievable double grip well packer |
| 05/29/1979 | CA1055390A Method and apparatus for gravel packing wells |
| 05/22/1979 | US4155404 Method for tensioning casing in thermal wells |
| 05/22/1979 | CA1055010A1 Wireline sealing apparatus and method for use with a drill string |
| 05/22/1979 | CA1054931A1 Annular blowout preventer |
| 05/22/1979 | CA1054930A1 Multiple string well packer |
| 05/15/1979 | US4154448 Rotating blowout preventor with rigid washpipe |
| 05/15/1979 | US4154302 Cable feed-through method and apparatus for well head constructions |
| 05/15/1979 | US4154299 Gas lift well with improvement |
| 05/15/1979 | US4154298 Well tubing hanger |
| 05/08/1979 | US4153112 Flex joint |
| 05/08/1979 | US4153111 Well head retriever tool and method |
| 05/08/1979 | US4153109 Method and apparatus for anchoring whipstocks in well bores |
| 05/08/1979 | US4153108 Well tool |
| 05/01/1979 | US4152097 Deep well pump adapter with inflatable seal means |
| 05/01/1979 | US4152015 Casing hanger |
| 05/01/1979 | US4151876 Single string retrievable well packers |
| 05/01/1979 | US4151875 EZ disposal packer |
| 05/01/1979 | CA1053575A1 Junction housing for use in undersea oil wells |
| 04/24/1979 | CA1053146A1 Device for limiting leakage from well head stuffing box assembly |
| 04/17/1979 | US4149594 Retrievable bridge plug |