| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 05/28/1985 | US4519456 In a well bore perforation wash tool |
| 05/28/1985 | US4519452 Using heat deactivatable deflocculant |
| 05/28/1985 | US4519451 Well treating equipment and methods |
| 05/28/1985 | US4519263 Matrix switching control of subsea production systems |
| 05/21/1985 | US4518144 Ram-type blowout preventer and packer therefor |
| 05/21/1985 | US4518042 Subsea wellhead connection assembly |
| 05/21/1985 | US4518037 Retrievable well tool |
| 05/21/1985 | CA1187476A1 Fluid actuated jack mechanism |
| 05/21/1985 | CA1187407A1 Hydraulic setting tool with flapper valve |
| 05/21/1985 | CA1187406A1 Well pressure compensation for blowout preventers |
| 05/15/1985 | EP0141726A2 Method and apparatus for sealing a well casing |
| 05/14/1985 | US4516795 Torus type connector |
| 05/14/1985 | US4516634 Hydraulic running and setting tool for well packer |
| 05/09/1985 | WO1985001999A1 Cylindrical gate valve apparatus and method |
| 05/08/1985 | EP0140490A2 Ram-type blowout preventer and packer therefor |
| 05/07/1985 | US4515400 Wellhead assembly |
| 05/07/1985 | US4515220 Apparatus and method for rotating coil tubing in a well |
| 05/07/1985 | US4515218 Casing structures having core members under radial compressive force |
| 05/07/1985 | US4515213 Packing tool apparatus for sealing well bores |
| 05/07/1985 | US4515211 Tool cable feeding system |
| 05/07/1985 | CA1186617A1 Cement staging apparatus for wells |
| 05/07/1985 | CA1186590A1 Pilot actuated spool valve |
| 05/02/1985 | EP0139438A1 Offshore well head protector and method of installation |
| 05/02/1985 | EP0138839A1 Composition for blowout preventer |
| 04/30/1985 | US4513823 Cylindrical gate valve apparatus and method |
| 04/30/1985 | US4513816 Sealing system for a well bore in which a hot fluid is circulated |
| 04/23/1985 | US4512410 Geothermal expansion wellhead system |
| 04/23/1985 | US4512405 Pneumatic transfer of solids into wells |
| 04/23/1985 | US4512399 Well packer |
| 04/23/1985 | US4512398 Pump-out plug catcher |
| 04/23/1985 | CA1185894A1 Modular subsea oil extraction installation |
| 04/17/1985 | EP0137335A2 Subsea casing hanger suspension system |
| 04/16/1985 | US4511002 Oil well tubing head system |
| 04/16/1985 | US4510994 For use in a well tubing |
| 04/16/1985 | US4510993 Hydrolyzed polyacrylamide, enhanced oil recovery |
| 04/16/1985 | US4510985 Stacked open bottom temporary guide base for offshore drilling |
| 04/16/1985 | CA1273566B Self-contained hydraulic injection system and method for freezing well surface controls |
| 04/16/1985 | CA1185593A1 Kelly seal |
| 04/16/1985 | CA1185520A1 Self-contained hydraulic injection system and method for freezing well surface controls |
| 04/11/1985 | WO1985001545A1 Inflatable cartridge assembly |
| 04/10/1985 | EP0136935A1 Device for drilling a multidrain oil well and for putting it into production |
| 04/10/1985 | EP0136920A2 Expandable polymer concrete |
| 04/09/1985 | US4509763 Radially extensible joint packing with helical spring support means |
| 04/09/1985 | US4509594 Mudline casing hanger assembly |
| 04/09/1985 | US4509405 Control valve system for blowout preventers |
| 04/09/1985 | CA1185231A1 Method for preparing plugging material |
| 04/02/1985 | US4508313 Valves |
| 04/02/1985 | US4508312 Ram-type blowout preventer |
| 04/02/1985 | US4508311 Annular blowout preventer |
| 04/02/1985 | US4508172 Tar sand production using thermal stimulation |
| 04/02/1985 | US4508166 Subsurface safety system |
| 04/02/1985 | US4508133 Protective cover retainer |
| 03/26/1985 | US4507082 Preheating insert for heavy wall pipe |
| 03/26/1985 | US4506858 Wireline valve inner seal |
| 03/26/1985 | US4506736 Pressure biased seal compressor |
| 03/26/1985 | CA1184485A1 Metal-to-metal seal |
| 03/20/1985 | EP0134710A2 Ram-type blowout preventer and packer therefor |
| 03/19/1985 | US4505332 Well packers |
| 03/19/1985 | CA1184113A1 Deflate-equalizing valve apparatus for inflatable packer formation tester |
| 03/12/1985 | US4504037 Ram blowout preventer securing and retracting apparatus |
| 03/12/1985 | CA1183832A1 Method of drilling a borehole through cavernous underground formations |
| 03/05/1985 | USRE31842 Well washing tool and method |
| 03/05/1985 | US4502534 For installation below the rotary table of a drilling rig |
| 02/28/1985 | WO1985000850A1 Hydraulically set well packer |
| 02/26/1985 | US4501441 Tension hanger landing bowl |
| 02/26/1985 | US4501331 Method of completing a well |
| 02/26/1985 | US4501330 Well completion apparatus and method |
| 02/26/1985 | US4501329 Graphite, carbon black, clay suspensions, quartz;reduced particle sizes |
| 02/26/1985 | US4501327 Split casing block-off for gas or water in oil drilling |
| 02/19/1985 | US4500095 Inflatable packer element |
| 02/19/1985 | US4500094 High pressure rotary stripper |
| 02/19/1985 | US4499951 Well completion apparatus |
| 02/19/1985 | US4499950 Wellhead stabilization |
| 02/19/1985 | US4499947 Packer for separation of zones in a well bore |
| 02/19/1985 | CA1182745A1 Packerless well completion assembly |
| 02/19/1985 | CA1182744A1 Valved plug for packer |
| 02/19/1985 | CA1182740A1 Well completion and testing system |
| 02/12/1985 | US4498814 Releasable anchor connector for tension leg platform |
| 02/12/1985 | US4498536 Method of washing, injecting swabbing or flow testing subterranean wells |
| 02/12/1985 | US4498532 Pump down tool and check valve |
| 02/12/1985 | CA1182393A1 Packer sealing assembly |
| 02/05/1985 | US4497592 Self-levelling underwater structure |
| 02/05/1985 | US4497510 Connection-disconnection device between one rigid pipe, inside well-tubing connected to a base by an articulated coupling, and another rigid pipe fixed to this base |
| 02/05/1985 | US4497369 Hydraulic control of subsea well equipment |
| 02/05/1985 | US4497366 Packer actuated vent assembly |
| 02/05/1985 | CA1182042A1 Bridge plug |
| 01/29/1985 | US4496172 Subsea wellhead connectors |
| 01/29/1985 | US4496162 Well sealing assembly having resilient seal ring with metal end caps |
| 01/29/1985 | US4495999 Deep water hydrostatic head control |
| 01/29/1985 | US4495997 Well completion system and process |
| 01/29/1985 | CA1181681A1 Packer tool for use in a wellbore |
| 01/29/1985 | CA1181680A1 Deep water riser system for offshore drilling |
| 01/23/1985 | EP0132159A2 Wellhead seals |
| 01/23/1985 | EP0131618A1 Vent line system. |
| 01/22/1985 | US4494778 Casing hanger |
| 01/22/1985 | US4494602 Electrical connection device for an underwater well head |
| 01/22/1985 | US4494376 Fluid actuated jack mechanism |
| 01/15/1985 | US4493374 Hydraulic setting tool |
| 01/15/1985 | US4493372 Well completion system and process |
| 01/15/1985 | CA1181003A1 Combination release mechanism for downhole well apparatus |