| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 05/17/1983 | US4383577 Rotating head for air, gas and mud drilling |
| 05/17/1983 | US4383436 Pipe tester |
| 05/11/1983 | EP0078261A1 Hydraulic control of subsea well equipment |
| 05/10/1983 | US4382623 Apparatus for retrieving fluid plug |
| 05/03/1983 | US4381868 Pressure-actuated wellhead sealing assembly |
| 05/03/1983 | US4381584 Dual string spider |
| 05/03/1983 | CA1145664A1 Method and apparatus for gravel packing multiple zones |
| 05/03/1983 | CA1145663A1 Crossover tool |
| 04/26/1983 | US4381114 Packoff and seal ring assembly with injected plastic packing |
| 04/26/1983 | CA1145251A1 Low torque pack-off seal assembly with retrievable lower section |
| 04/26/1983 | CA1145250A1 Check valve assembly |
| 04/26/1983 | CA1145245A1 Method and apparatus for gravel packing multiple zones |
| 04/12/1983 | US4379561 Well packer |
| 04/12/1983 | US4379558 Anti-extrusion packing member |
| 04/12/1983 | US4379556 Stripping gland for multicables with connector |
| 04/12/1983 | CA1144475A1 Well test apparatus |
| 04/05/1983 | US4378850 Hydraulic fluid supply apparatus and method for a downhole tool |
| 04/05/1983 | US4378849 Blowout preventer with mechanically operated relief valve |
| 04/05/1983 | US4378848 Method and apparatus for controlling subsea well template production systems |
| 04/05/1983 | US4378843 Method for completion of wells |
| 04/05/1983 | US4378838 Pipe wipers and cups therefor |
| 04/05/1983 | CA1144067A1 Carrier for blowout preventer |
| 03/29/1983 | US4378123 Seal means for underwater connectors |
| 03/29/1983 | US4378051 Driving device for displacing an element in a conduit filled with liquid |
| 03/29/1983 | US4378050 Arrangement for full hole drilling |
| 03/22/1983 | US4377206 Well blowout prevention device |
| 03/22/1983 | US4377127 Device for projecting a wall coating, particularly for an excavation |
| 03/22/1983 | CA1143399A1 Pressure seal for pumping instruments through drill rod |
| 03/22/1983 | CA1143282A1 Method of and apparatus for positioning a submarine structure |
| 03/22/1983 | CA1143281A1 Accumulator with float orienting means |
| 03/15/1983 | US4376463 Method of applying tensile stress to a casing |
| 03/15/1983 | CA1142848A1 Inflatable packer system |
| 03/08/1983 | US4375835 Oil production system |
| 03/08/1983 | CA1142429A2 Blowout preventer shear blades |
| 03/08/1983 | CA1142428A2 Blowout preventer sealing member |
| 03/08/1983 | CA1142427A2 Blowout preventer shearing and sealing rams |
| 03/01/1983 | US4375240 Well packer |
| 03/01/1983 | US4375239 Acoustic subsea test tree and method |
| 02/22/1983 | US4374630 Anchor connector for tension leg |
| 02/22/1983 | US4374543 Apparatus for well treating |
| 02/22/1983 | CA1141659A1 Packer deflate subassembly for an inflatable packer system |
| 02/22/1983 | CA1141657A1 Valve assembly for an inflatable packer system |
| 02/22/1983 | CA1141656A1 Apparatus for and method of operating a well |
| 02/15/1983 | US4373380 Test tool for sub-sea well head housings and method of testing |
| 02/15/1983 | CA1141290A1 Spherical accumulator with buoyant float |
| 02/15/1983 | CA1141289A1 Subsea test tree |
| 02/08/1983 | US4372563 Packing support for mounting a well casing packing |
| 02/08/1983 | US4372562 Inflatable packer with liquid resin anchored reinforcing sheath |
| 02/08/1983 | US4372527 Blowout preventer |
| 02/08/1983 | US4372393 Casing bore receptacle |
| 02/08/1983 | US4372390 Well valve |
| 02/08/1983 | US4372389 Downhole water pump and method of use |
| 02/08/1983 | US4372388 Subsurface control valve |
| 02/08/1983 | US4372387 Downhole tool with ratchet |
| 02/08/1983 | US4372379 Rotary drive assembly for downhole rotary pump |
| 02/08/1983 | US4372378 Shut-in device for stopping the flow of high pressure fluids |
| 02/01/1983 | US4371045 Method and apparatus for recovering unstable cores |
| 02/01/1983 | US4371038 Apparatus and method for injecting fluid into a well |
| 02/01/1983 | US4371037 Transfer terminal for offshore production |
| 02/01/1983 | US4370919 Vent cap assembly for a monitoring well |
| 02/01/1983 | CA1140461A1 High temperature well packer |
| 02/01/1983 | CA1140454A1 Wellhead shearing apparatus |
| 01/25/1983 | US4370077 Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength |
| 01/25/1983 | US4369845 Oil well blow-out control |
| 01/25/1983 | CA1140044A1 Blowout preventer ram lock |
| 01/25/1983 | CA1140042A1 Inflatable packer drill stem testing system |
| 01/19/1983 | EP0069740A1 Hazardous materials control |
| 01/12/1983 | EP0069181A1 Method of and apparatus for use in reinforcing a piling structure, and a precast concrete pile for use in the method |
| 01/11/1983 | US4367795 Rotating blowout preventor with improved seal assembly |
| 01/11/1983 | US4367794 Acoustically actuated downhole blowout preventer |
| 01/04/1983 | US4366970 Theft prevention method and apparatus for wellheads |
| 01/04/1983 | US4366862 Downhole pump and testing apparatus |
| 12/28/1982 | CA1138419A1 Retractable bit system |
| 12/28/1982 | CA1138212A1 Method of sealing salina excavations |
| 12/23/1982 | WO1982004405A1 An oil/gas separator |
| 12/21/1982 | US4364433 Remote connection apparatus |
| 12/21/1982 | US4364432 Seal assembly |
| 12/21/1982 | CA1137870A2 Inflatable packer assembly with control valve |
| 12/21/1982 | CA1137869A1 Diffuser for wellhead isolation tool |
| 12/15/1982 | EP0067096A2 Deflate-equalizing valve apparatus for inflatable packer formation tester |
| 12/14/1982 | US4363357 Rotary drilling head |
| 12/07/1982 | US4362440 Tubular lost borehole closure |
| 12/07/1982 | US4362210 Friction hold wear bushing |
| 11/30/1982 | US4361353 Method and apparatus for retrieving wear bushings of various diameters |
| 11/30/1982 | US4361186 Formation flow channel blocking |
| 11/30/1982 | US4361185 Stripper rubber for rotating blowout preventors |
| 11/30/1982 | CA1136544A1 Blowout preventer shearing and sealing rams |
| 11/23/1982 | US4360186 Swivel joint |
| 11/23/1982 | CA1136038A1 Retrievable bridge plug |
| 11/23/1982 | CA1136035A1 Well test systems and methods |
| 11/16/1982 | US4359090 Anchoring mechanism for well packer |
| 11/16/1982 | US4359089 Carrier for blowout preventer |
| 11/11/1982 | WO1982003887A1 Hydraulic control of subsea well equipment |
| 11/09/1982 | US4358085 Keying means for segmented end ring blowout preventer |
| 11/09/1982 | US4357992 Fluid pressurization apparatus and technique |
| 11/02/1982 | US4356841 Matrix switching control of subsea production systems |
| 11/02/1982 | CA1134874A1 Seal assembly |
| 11/02/1982 | CA1134743A1 Valve retrieval mechanism for an inflatable packer system |
| 11/02/1982 | CA1134742A1 Means for tensioning tubing in a wellhead assembly |
| 10/26/1982 | US4355825 Mudline suspension system |