| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 09/11/1984 | US4470457 Device for the transfer of plugging and grouting materials to, and their processing at, a pre-set level in a well |
| 09/11/1984 | CA1174165A1 Control valve |
| 09/05/1984 | EP0117858A2 Apparatus for confining and controlling a flow of fluid from an oil/gas source, especially in an uncontrolled blow-out on the sea bed |
| 09/05/1984 | EP0117453A1 Fire resistant connections and U-like sealing means therefor |
| 09/05/1984 | EP0117418A1 Fire resistant connections and dovetail-like sealing means therefor |
| 09/05/1984 | EP0117417A1 Fire resistant connections and T-like sealing means therefor |
| 09/04/1984 | US4469182 Method of installing a casing hanger |
| 09/04/1984 | US4469174 Combination cementing shoe and basket |
| 09/04/1984 | US4469173 Expendable plug assembly |
| 09/04/1984 | US4469172 Self-energizing locking mechanism |
| 09/04/1984 | US4469136 Subsea flowline connector |
| 09/04/1984 | US4468967 Acoustic plug release indicator |
| 08/29/1984 | EP0116671A1 Cement slurries for deep-drilling containing copolymers to reduce loss of water |
| 08/28/1984 | US4468055 Wellhead apparatus |
| 08/28/1984 | US4467996 Valve apparatus |
| 08/28/1984 | US4467867 Subterranean well safety valve with reference pressure chamber |
| 08/28/1984 | US4467865 Well packer provided with dual methods of use |
| 08/28/1984 | US4467864 Workover rig support apparatus |
| 08/28/1984 | US4467836 Flexible tube means, especially for an expansible valve |
| 08/28/1984 | US4467835 Shut-off devices |
| 08/28/1984 | US4467833 Control valve and electrical and hydraulic control system |
| 08/22/1984 | EP0116443A1 Down hole blow out preventer and method of use |
| 08/21/1984 | US4466617 Sandwich shaped piston seal |
| 08/21/1984 | US4466273 In suspect pipe fittings |
| 08/21/1984 | CA1173076A1 Thread-type pipe connector |
| 08/14/1984 | USRE31645 Safety apparatus for automatically sealing hydraulic lines within a sub-sea well casing |
| 08/14/1984 | US4465401 Minimizing subsidence effects during production of coal in situ |
| 08/14/1984 | US4465139 Valve and sensing device for well conduits |
| 08/14/1984 | US4465134 Tie-back connection apparatus and method |
| 08/14/1984 | US4465133 Casing hanger collet |
| 08/08/1984 | EP0115463A2 Cement slurry compositions for cementing oil wells, allowing the control of free water, and the corresponding cementing process |
| 08/07/1984 | US4463807 Minimizing subsidence effects during production of coal in situ |
| 08/07/1984 | CA1172162A1 Pipe wipers and cups therefor |
| 08/02/1984 | WO1984002949A1 Vent line system |
| 07/31/1984 | US4462714 Method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern |
| 07/31/1984 | US4462464 Wellhead with hydraulic pump actuator |
| 07/24/1984 | US4461448 Well blowout preventer, and packing element |
| 07/24/1984 | US4461354 Hydraulic well cap |
| 07/18/1984 | EP0113413A2 Annular blowout preventer |
| 07/17/1984 | US4460295 Submersible connector |
| 07/17/1984 | US4460156 Wellhead connector with check valve |
| 07/17/1984 | US4460151 Annular blowout preventer |
| 07/17/1984 | US4460150 Annular blowout preventer |
| 07/17/1984 | US4460149 Annular blowout preventer with upper and lower spherical sealing surfaces |
| 07/17/1984 | US4460047 In an underwater well installation |
| 07/17/1984 | US4460042 Dual ring casing hanger |
| 07/17/1984 | US4460041 Subterranean well tool with pressure equalizing release |
| 07/17/1984 | US4460040 For controlling the flow around a seal element |
| 07/17/1984 | US4460039 Wellhead valve removal and installation tool |
| 07/17/1984 | CA1170988A1 Well tool |
| 07/17/1984 | CA1170986A1 Marine conductor coupling |
| 07/17/1984 | CA1170983A1 Combination hydraulically set hanger assembly with expansion joint |
| 07/17/1984 | CA1170982A1 Well valve |
| 07/10/1984 | US4458945 Oil recovery mining method and apparatus |
| 07/10/1984 | US4458876 Annular blowout preventer |
| 07/10/1984 | US4458752 Downhole tool inflatable packer assembly |
| 07/10/1984 | US4458751 Method and apparatus for selective disengagement of a fluid transmission conduit operable under oppositely directed pressure differentials |
| 07/10/1984 | US4458521 Leak detection system |
| 07/10/1984 | CA1170683A1 Metal seal assembly |
| 07/10/1984 | CA1170465A1 Riser connector |
| 07/04/1984 | EP0112447A2 Mudline casing hanger assembly |
| 07/03/1984 | US4457448 Gasketless well casing cap |
| 07/03/1984 | US4457369 Packer for high temperature high pressure wells |
| 07/03/1984 | US4457367 Downhole pump and testing apparatus |
| 07/03/1984 | US4457366 Wiper device for stripping fluid from well pipe |
| 06/26/1984 | US4456215 Inner seal and support rod assembly for high pressure blowout preventers |
| 06/26/1984 | US4456070 Tieback connection method and apparatus |
| 06/26/1984 | US4456063 Adapted for use with a drilling rig |
| 06/26/1984 | US4456062 Flow diverter |
| 06/26/1984 | CA1169766A1 Nipple insert |
| 06/26/1984 | CA1169764A1 Concentric electric connector for subsea well apparatus |
| 06/26/1984 | CA1169763A1 Keying means for segmented end ring blowout preventor |
| 06/26/1984 | CA1169762A1 Geothermal wellhead assembly |
| 06/26/1984 | CA1169758A1 Cement retainer and setting tool assembly |
| 06/21/1984 | WO1984002374A1 Flow diverter |
| 06/21/1984 | WO1984002373A1 Flow diverter seal |
| 06/19/1984 | US4455040 High-pressure wellhead seal |
| 06/19/1984 | US4455027 Packer apparatus |
| 06/19/1984 | EP0053117A4 Blender apparatus. |
| 06/12/1984 | US4453745 Lockdown mechanism for wellhead connector |
| 06/12/1984 | US4453599 Method and apparatus for controlling a well |
| 06/05/1984 | US4452638 Cement, h2o, carbon black, coal dust and surfactant |
| 06/05/1984 | US4452463 Packer sealing assembly |
| 06/05/1984 | US4452421 Well blowout preventer, and packing element |
| 06/05/1984 | US4452312 Modular undersea oil production plant |
| 06/05/1984 | US4452304 Remotely operated packer and anchor apparatus for changing a geothermal wellhead valve |
| 06/05/1984 | US4452076 Well logging tool |
| 06/05/1984 | CA1168577A1 Underwater wellhead connector |
| 06/05/1984 | CA1168576A1 Apparatus and method for controlling injection fluid flow in a well annulus |
| 06/05/1984 | CA1168427A1 Method of producing a homogeneous viscous well servicing fluid within a borehole and well servicing fluid compositions |
| 05/30/1984 | EP0109541A1 Pipe string tie-back connector |
| 05/29/1984 | US4450912 Method and apparatus for well cementing through a tubular member |
| 05/23/1984 | EP0108895A1 Annular blowout preventer |
| 05/22/1984 | US4449584 Inflatable flowing hole plug |
| 05/22/1984 | US4449583 Well devices with annulus check valve and hydraulic by-pass |
| 05/22/1984 | CA1167762A1 Method for transmission of pressure signals through a conduit |
| 05/22/1984 | CA1167761A1 Retrievable packer apparatus |
| 05/16/1984 | EP0108534A2 Acoustic indicator for wells |
| 05/15/1984 | US4448266 Deep water riser system for offshore drilling |
| 05/15/1984 | US4448255 Rotary blowout preventer |