| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 07/13/1993 | US5226491 Solenoid operated blanking block valve |
| 07/13/1993 | US5226485 Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| 07/13/1993 | US5226484 Emergency casing support using standard casing hanger |
| 07/13/1993 | US5226478 Cement port closure sleeve for a subsea well |
| 07/13/1993 | CA1320127C Placement method of plugs and screens in horizontal drilling |
| 07/08/1993 | WO1993013293A1 Inflatable packer assembly |
| 07/08/1993 | WO1993013292A1 Method and device for reestablishment of circulation in an operating well |
| 07/08/1993 | WO1993013291A1 Arrangement for removing drill cuttings in connection with well drilling in the sea bottom |
| 07/07/1993 | EP0550272A1 The control of fluid flow in oil wells |
| 07/06/1993 | US5224715 Supported-lip low interference metal stab seal |
| 07/06/1993 | US5224557 Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms |
| 07/06/1993 | US5224556 Downhole activated process and apparatus for deep perforation of the formation in a wellbore |
| 07/06/1993 | US5224541 Use of profile control agents to enhance water disposal |
| 07/06/1993 | US5224540 Downhole tool apparatus with non-metallic components and methods of drilling thereof |
| 07/01/1993 | DE4142540A1 Bohrlochverschluss Packer |
| 06/30/1993 | EP0549419A2 Method and apparatus for hydraulic isolation determination |
| 06/30/1993 | CN1073741A Method of shielding weighting agent in drilling gas-well liquid layer |
| 06/29/1993 | US5222560 Full bore internal tieback system and method |
| 06/29/1993 | US5222555 Emergency casing hanger system |
| 06/29/1993 | US5222553 Water well pump |
| 06/24/1993 | WO1993012322A1 Packers |
| 06/23/1993 | EP0500664B1 Improved method for transporting particles in a porous medium |
| 06/23/1993 | CN1073469A Method for production of film spreading agent |
| 06/23/1993 | CN1073468A Method for producing high-temp sand-consolidating agent |
| 06/22/1993 | US5220960 Pumping aqueous acid solution to remove by dissolution |
| 06/22/1993 | US5220959 Gripping inflatable packer |
| 06/22/1993 | US5220829 Downhole formation pump |
| 06/16/1993 | CN2136327Y Composite rubber cement basket for cementing |
| 06/16/1993 | CN2136326Y Polish rod sealing device |
| 06/16/1993 | CN2136325Y Cementing pressure closing float collar without need of fill-up during casing |
| 06/15/1993 | US5219475 Water-soluble polymer crosslinkable with chromium ions |
| 06/15/1993 | US5219247 Method of forming consolidating earth columns by injection, the relevant plant with double chamber pneumatic hammer boring drill and the resulting column |
| 06/15/1993 | CA2021932C Cementing apparatus |
| 06/15/1993 | CA1319166C Connector for fluid carrying conduits |
| 06/10/1993 | WO1993011423A1 Method for predicting cement properties |
| 06/10/1993 | WO1993011337A1 Method and apparatus for heating a hot-setting substance injected in a borehole |
| 06/09/1993 | EP0545551A2 Multiplexed electrohydraulic control system for an underwater production installation |
| 06/09/1993 | CN2135644Y Automatic liquid feeding telescopic floating hoop |
| 06/08/1993 | US5217077 Resettable packer |
| 06/08/1993 | US5217069 Sucker rod wiper |
| 06/08/1993 | US5217068 Stuffing box |
| 06/02/1993 | CN2135059Y External packer of casing |
| 06/02/1993 | CN2135058Y Antiwear device for well packer |
| 06/02/1993 | CN2135057Y Impacting device for non-filling or fitting well cementation during setting casing |
| 06/01/1993 | US5215151 Method and apparatus for drilling bore holes under pressure |
| 06/01/1993 | US5215147 Positioning drillable packer in wellbore, adding first resin, hardening, adding second resin |
| 06/01/1993 | US5215145 Wedge-set sealing flap for use in subterranean wellbores |
| 06/01/1993 | CA1318585C Blowout preventer testing apparatus |
| 06/01/1993 | CA1318511C Grouting method - chemical method |
| 05/27/1993 | WO1993010327A1 Two-part connector for fluid carrying conduits |
| 05/26/1993 | EP0543642A2 Downhole seal circulating devices |
| 05/26/1993 | EP0543140A2 Drilling device for civil engineering and method for making stabilizing columns or similar structures in the ground |
| 05/26/1993 | EP0397716B1 Injection device for introducing fluids under pressure into cracked structures |
| 05/26/1993 | CN2134482Y Multifunction welding well device |
| 05/25/1993 | US5213162 Submarine wellhead |
| 05/25/1993 | US5213161 Well cementing method using acid removable low density well cement compositions |
| 05/25/1993 | US5213160 Cementing a well with a water setting hydraulic slurry, displacement and hardening |
| 05/25/1993 | US5213158 For a wellbore |
| 05/25/1993 | US5213157 Clamping device for capping oil wells and the like, and apparatus for mounting same |
| 05/25/1993 | CA1318245C Subsea well casing hanger packoff system |
| 05/25/1993 | CA1318244C Method and apparatus for operating equipment in a remote location |
| 05/25/1993 | CA1318243C Wellhead valve |
| 05/25/1993 | CA1318242C Method for plugging lost circulation areas and lost circulation material to be used therefor |
| 05/23/1993 | CA2083477A1 Method and apparatus for casing circulation and filling |
| 05/19/1993 | EP0542727A1 Swivel tool for well head |
| 05/19/1993 | CN2133668Y Rotary environmental monitoring well |
| 05/18/1993 | US5211244 Apparatus and method for containing fluids around a wellhead |
| 05/18/1993 | US5211238 Method using micro-sphere cement slurries for deviated wells |
| 05/18/1993 | US5211234 Horizontal well completion methods |
| 05/18/1993 | US5211229 Washpipe support clamp |
| 05/18/1993 | US5211228 Diverter system |
| 05/18/1993 | US5211227 Fugitive emissions accumulator |
| 05/18/1993 | US5211226 Metal-to-metal seal for oil well tubing string |
| 05/18/1993 | CA2042082C Wellhead seal probe |
| 05/18/1993 | CA1317874C Submerged actuator |
| 05/18/1993 | CA1317873C Well housing and landing shoulder |
| 05/13/1993 | WO1993009332A1 Cement slurries for deviated wells |
| 05/12/1993 | EP0541090A1 Reinflatable external casing packer and method of casing |
| 05/12/1993 | CN2132829Y Differential pressure staged cementing unit |
| 05/12/1993 | CN2132828Y Bidirectional slip orbiting packer for oil well |
| 05/12/1993 | CN2132827Y Multipurpose wellhead assembly for low temp. terrestrial heat |
| 05/12/1993 | CN1020648C Apparatus for covering complex section in well |
| 05/11/1993 | US5209673 Subsea electrical conductive insert coupling |
| 05/11/1993 | US5209600 Method and apparatus for repairing casings and the like |
| 05/11/1993 | US5209521 Expanding load shoulder |
| 05/11/1993 | US5209301 Multiple phase chemical injection system |
| 05/11/1993 | US5209300 Pressure regulated chemical injection system |
| 05/11/1993 | US5209299 Multiple chamber chemical injection system |
| 05/11/1993 | US5209298 Pressurized chemical injection system |
| 05/11/1993 | CA1317541C Hanger and seal assembly |
| 05/07/1993 | CA2082232A1 Reinflatable external casing packer and method of casing |
| 05/04/1993 | US5207779 Method and apparatus for closing a wellhead casing |
| 05/04/1993 | US5207272 Electrically actuated well packer |
| 05/04/1993 | CA1317216C Inflatable packers and methods of utilization |
| 04/29/1993 | WO1993008366A1 Cementing plug |
| 04/28/1993 | CN2130915Y Bridge-up central tube with torque transmitter |
| 04/27/1993 | US5205567 Reinforced inflatable packer |
| 04/27/1993 | US5205359 For injecting sealing balls into a well |
| 04/27/1993 | US5205358 Pipe plugging system |
| 04/27/1993 | US5205356 Well starter head |