| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 05/15/1984 | US4448252 Minimizing subsidence effects during production of coal in situ |
| 05/15/1984 | US4448247 Geothermal well head clean out and shut off assembly |
| 05/15/1984 | CA1167371A1 Drag spring unit |
| 05/09/1984 | EP0107842A1 Device for repeatedly carrying out the operations of installing or withdrawing an autonomous submersible module comprising a section of a conduit connectable to a flow-line |
| 05/08/1984 | US4447038 Blow-out protector packer element |
| 05/08/1984 | US4447037 Well blowout preventer, and packing element |
| 05/02/1984 | EP0107391A2 Wiper device for stripping fluid from well pipe |
| 05/01/1984 | US4445807 Diverless subsea template levelling system and method |
| 05/01/1984 | US4445575 Borehole cementing over water |
| 05/01/1984 | US4445573 Insulating foam steam stimulation method |
| 04/26/1984 | WO1984001610A1 Pipe string tie-back connector |
| 04/26/1984 | WO1984001600A1 Retrievable inside blowout preventer valve apparatus |
| 04/25/1984 | EP0106048A2 Casing hanger collet |
| 04/24/1984 | US4444404 Variable bore ram packing element and blowout preventer |
| 04/24/1984 | US4444403 Thermal and/or corrosion seal for a well tool |
| 04/24/1984 | US4444401 Flow diverter seal with respective oblong and circular openings |
| 04/24/1984 | US4444400 Seal assemblies and corrugated metal packer members therefor |
| 04/24/1984 | US4444265 Drain hole drilling |
| 04/24/1984 | US4444263 Permanent thermal packer method |
| 04/24/1984 | US4444261 High sweep efficiency steam drive oil recovery method |
| 04/24/1984 | US4444254 Slip assembly for hydraulic pipe testing |
| 04/24/1984 | US4444252 Slack adjustment for slip system in downhole well apparatus |
| 04/24/1984 | US4444250 Flow diverter |
| 04/24/1984 | US4444218 Underwater fluid connector |
| 04/24/1984 | CA1166264A1 Organophilic clay complexes |
| 04/24/1984 | CA1166152A1 Subsurface safety valve system with hydraulic packer |
| 04/17/1984 | US4442902 Remote hydraulic control method and apparatus, notably for underwater valves |
| 04/17/1984 | US4442900 Subsea well completion system |
| 04/17/1984 | US4442894 Unitary float valve and wiping plug retainer |
| 04/17/1984 | US4442859 Control valve |
| 04/17/1984 | CA1165756A1 Arrangement for full hole drilling |
| 04/10/1984 | US4441742 Connectors for securing members together under large clamping |
| 04/10/1984 | US4441741 Connectors for securing members together under large clamping force |
| 04/10/1984 | US4441740 Connectors for securing members together under large clamping force |
| 04/10/1984 | US4441721 High temperature packer with low temperature setting capabilities |
| 04/10/1984 | US4441561 Method and apparatus for treating well formations |
| 04/10/1984 | US4441559 Retrievable well packer |
| 04/10/1984 | US4441556 Diverter tool and its use |
| 04/10/1984 | US4441553 Anchor for use in a well |
| 04/10/1984 | US4441552 Hydraulic setting tool with flapper valve |
| 04/10/1984 | US4441551 Modified rotating head assembly for rotating blowout preventors |
| 04/10/1984 | CA1165228A1 Hydraulically set well packer |
| 04/04/1984 | EP0046801A4 Packer arrangements for oil wells and the like. |
| 04/03/1984 | US4440423 Underwater hydraulic control connector |
| 04/03/1984 | US4440232 Well pressure compensation for blowout preventers |
| 04/03/1984 | US4440226 For reducing/preventing migration of a formation fluid |
| 04/03/1984 | US4440223 Well slip assemblies |
| 04/03/1984 | US4440221 Submergible pump installation |
| 04/03/1984 | US4440218 Slurry up particulate placement tool |
| 04/03/1984 | CA1164797A1 Mudline suspension system |
| 03/28/1984 | EP0103786A2 Ram-type blowout preventer |
| 03/27/1984 | US4438996 Apparatus for use in energizing submergible pumping equipment in underwater wells |
| 03/27/1984 | US4438976 Method of repair of short circuits for in situ leaching |
| 03/27/1984 | US4438933 Hydraulic set high temperature isolation packer |
| 03/27/1984 | US4438900 Locking mechanism for annular blowout preventer |
| 03/27/1984 | US4438813 Device for applying plugging mix to well walls |
| 03/27/1984 | US4438811 Latch for use in a well |
| 03/27/1984 | CA1164441A1 Well casing jack mechanism |
| 03/20/1984 | US4437791 For an offshore oilwell platform |
| 03/20/1984 | US4437643 Ram-type blowout preventer |
| 03/20/1984 | US4437520 Method for minimizing subsidence effects during production of coal in situ |
| 03/20/1984 | US4437517 Slip mechanism for subterreanean wells |
| 03/20/1984 | US4437516 Combination release mechanism for downhole well apparatus |
| 03/20/1984 | CA1164022A1 Annulus sealing device |
| 03/20/1984 | CA1163916A1 Cementing head apparatus and method of operation |
| 03/13/1984 | US4436165 Drain hole drilling |
| 03/13/1984 | US4436157 Latch mechanism for subsea test tree |
| 03/13/1984 | US4436154 Method for controlling subsurface blowout |
| 03/13/1984 | US4436151 Apparatus for well cementing through a tubular member |
| 03/13/1984 | US4436150 For a well bore |
| 03/13/1984 | US4436149 Hydraulic setting tool |
| 03/13/1984 | CA1163552A1 Self-standing marine riser |
| 03/06/1984 | US4434854 Pressure actuated vent assembly for slanted wellbores |
| 03/06/1984 | US4434853 Oil well blow out control valve |
| 03/06/1984 | US4434811 Coupling seal and method of assembly |
| 03/01/1984 | WO1984000791A1 Wellhead system for exploratory wells |
| 02/29/1984 | EP0101649A2 Subsea wellhead assembly |
| 02/29/1984 | EP0101497A1 System for activating a blowout preventer |
| 02/28/1984 | US4433859 Wellhead connector with release mechanism |
| 02/28/1984 | US4433847 Conduit sealing system |
| 02/28/1984 | US4433733 Oil storage tank extinguisher |
| 02/28/1984 | US4433726 Energized packer anchor seal assembly |
| 02/21/1984 | US4432670 Combination connector and flex joint for underwater tension elements |
| 02/21/1984 | US4432419 Retrievable plug |
| 02/21/1984 | US4432418 Apparatus for releasably bridging a well |
| 02/21/1984 | US4432417 For use in a subterranean well |
| 02/14/1984 | US4432064 Apparatus for monitoring a plurality of operations |
| 02/14/1984 | US4431704 Composition for blowout preventer |
| 02/14/1984 | US4431341 Construction of a concrete lined chamber |
| 02/14/1984 | US4431215 Riser connector |
| 02/14/1984 | US4431058 Wash tool method for subterranean wells |
| 02/14/1984 | US4431055 Method for selective plugging of depleted channels or zones in in situ oil shale retorts |
| 02/14/1984 | US4431054 Seal assembly releasing tool |
| 02/14/1984 | US4431052 Downhole seal for low profile oil well pumping installations |
| 02/14/1984 | CA1162146A1 Well packer |
| 02/07/1984 | US4429746 Method and apparatus for disposing of drilling muds and wastes generated during well drilling operations and for plugging and abandoning the well |
| 02/07/1984 | US4429720 Apparatus for seeking out and repairing leaks in pipes |
| 02/07/1984 | CA1161750A1 Parking tool for pumpdown well completion system |
| 02/07/1984 | CA1161748A1 Ball switch device and method |
| 01/31/1984 | US4428592 In a sealing means |