| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/24/1987 | CA1218296A1 Method and apparatus for production of subsea hydrocarbons using a floating vessel |
| 02/17/1987 | US4643616 Device for positioning, activating and connecting modules of a sub-sea oil production station |
| 02/17/1987 | US4643257 Method of recovering hydrocarbons from an underground formation |
| 02/17/1987 | US4643024 Method of, and measuring tube and measuring probe for, measuring fluid pressure in a sealed bore hole |
| 02/17/1987 | CA1218015A1 Packer valve arrangement |
| 02/11/1987 | CN86105009A Installation devices for drill casings and like underground conduits |
| 02/10/1987 | US4641841 Metal seal for a tubular connection |
| 02/10/1987 | US4641708 Casing hanger locking device |
| 02/10/1987 | CA1217716A Rotatable liner arrangement with tandem cone liner hanger |
| 02/10/1987 | CA1217629A Process for conformance control using a polymer flucculate |
| 02/05/1987 | DE3526557A1 Tubular, lost borehole plug |
| 02/04/1987 | CN85101901A Process for the enhanced oil recovery of underground mineral oil deposits |
| 02/03/1987 | USRE32345 Packer valve arrangement |
| 02/03/1987 | US4640647 Offshore well apparatus and method |
| 02/03/1987 | US4640372 Diverter including apparatus for breaking up large pieces of formation carried to the surface by the drilling mud |
| 02/03/1987 | US4640360 Sonic cementing |
| 02/03/1987 | US4640351 Sealing packer |
| 02/03/1987 | US4640163 Umbilical safety joint |
| 02/03/1987 | US4640096 Load carrying connection and hydraulic fluid transmission device |
| 02/03/1987 | CA1217420A1 Hydraulically set well packer |
| 02/03/1987 | CA1217324A1 Methods for acidizing subterranean formations and gelled acid composition |
| 01/28/1987 | EP0210028A2 Gravel packer |
| 01/27/1987 | US4639228 Rotating multi-path fluid manifold |
| 01/27/1987 | US4638972 Valve apparatus |
| 01/27/1987 | US4638860 Apparatus for blocking communication between well bore intervals |
| 01/27/1987 | US4638859 Gravel packer |
| 01/27/1987 | CA1217132A1 Oil well hole plug |
| 01/27/1987 | CA1217131A1 Sequential inflatable packer |
| 01/27/1987 | CA1217129A1 Wellhead expansion assembly |
| 01/27/1987 | CA1217128A1 Wellhead isolation tool |
| 01/21/1987 | EP0209338A2 Apparatus for hydraulically releasing a tool string from a gravel screen |
| 01/20/1987 | US4637470 Subsea hydraulic coupling |
| 01/20/1987 | US4637468 Method and apparatus for multizone oil and gas production |
| 01/20/1987 | US4637462 Liquid mud ring control of underground liquids |
| 01/20/1987 | US4637460 Parallel flow tube apparatus |
| 01/20/1987 | US4637458 Blowout preventer for use in combination with a deep well pump |
| 01/20/1987 | CA1216742A1 Well treating process and composition |
| 01/14/1987 | EP0208388A2 Marine wellhead structure |
| 01/14/1987 | EP0208387A2 Subsea wellhead structure |
| 01/13/1987 | US4636934 Well valve control system |
| 01/13/1987 | US4636572 Permeability contrast correction employing propionate-sequestered chromium(III) prepared by nitrite/dichromate redox |
| 01/13/1987 | US4635728 Method and apparatus for connecting a tubular element to an underwater wellhead |
| 01/13/1987 | US4635723 Continuous injection of corrosion-inhibiting liquids |
| 01/13/1987 | US4635717 Method and apparatus for obtaining selected samples of formation fluids |
| 01/13/1987 | US4635716 Gravel packer |
| 01/13/1987 | CA1216517A1 Well packer |
| 01/13/1987 | CA1216515A1 Diverter/bop system and method for a bottom supported offshore drilling rig |
| 01/13/1987 | CA1216514A1 Ram-type blowout preventer and packer therefor |
| 01/07/1987 | EP0207818A1 Controlling and monitoring device for a well head submerged in a liquid |
| 01/07/1987 | EP0207702A2 Retrievable downhole bridge plug tool |
| 01/07/1987 | EP0207220A2 Process for preparing a stabilized chromium(III) propionate solution and its use in formation treatment |
| 01/06/1987 | US4634152 Casing hanger running tool |
| 01/06/1987 | US4633946 Closed cell foam |
| 01/06/1987 | US4633944 Gravel packer |
| 01/06/1987 | US4633943 Gravel packer |
| 01/06/1987 | US4633801 Stress reduction connection apparatus for cylindrical tethers |
| 01/06/1987 | CA1216230A1 Torque multiplier subsea tool |
| 12/31/1986 | CN85203837U Sealer for keeping rod vertical and automaticly following its top |
| 12/30/1986 | US4632406 Apparatus in which an annular ring is carried within a groove about one member for slidably engaging the cylindrical surface of another member |
| 12/30/1986 | US4632188 Subsea wellhead apparatus |
| 12/30/1986 | US4632184 Submersible pump safety systems |
| 12/30/1986 | US4632183 Insertion drive system for tree savers |
| 12/30/1986 | EP0205425A1 Electric power supplying well head assembly |
| 12/30/1986 | EP0128216B1 Flow diverter seal |
| 12/23/1986 | US4630680 For use with a floating drilling vessel |
| 12/23/1986 | US4630679 Method for treatment and/or workover of injection wells |
| 12/23/1986 | CA1215640A1 Pneumatic transfer of solids into wells |
| 12/18/1986 | WO1986007427A1 A valve actuator system for controlling of valves |
| 12/17/1986 | EP0205367A1 Under pressure inflatable device for obturating a conduit comprising a self-clamping device for reinforced layers |
| 12/17/1986 | EP0205297A2 Improvements in down-hole blow-out preventers |
| 12/16/1986 | US4628997 Packoff |
| 12/16/1986 | US4628993 Foam gravel packer |
| 12/16/1986 | CA1215320A1 Downhole steam packer |
| 12/16/1986 | CA1215319A1 Wellhead |
| 12/16/1986 | CA1215318A1 Wellhead |
| 12/10/1986 | EP0204041A1 Grouting annuli in offshore platforms |
| 12/10/1986 | EP0046801B1 Packer arrangements for oil wells and the like |
| 12/09/1986 | US4628392 Explosion proof electrical connector system with quick power disconnect |
| 12/09/1986 | US4627496 Squeeze cement method using coiled tubing |
| 12/09/1986 | US4627491 Well packer |
| 12/09/1986 | US4627490 Well bore barrier penetrator arrangement and method for multiple conductor pump power cable |
| 12/09/1986 | US4627489 In a well head |
| 12/09/1986 | US4627488 Isolation gravel packer |
| 12/09/1986 | CA1215151A1 Explosion proof electrical connector system with quick power disconnect |
| 12/03/1986 | EP0203172A1 Non-return valve for bore hole sleeves. |
| 12/02/1986 | US4626135 Marine riser well control method and apparatus |
| 12/02/1986 | US4625805 Oil production installation for a subsea station of modular design |
| 12/02/1986 | US4625804 Remotely releasable template and dome |
| 12/02/1986 | US4625803 Method and apparatus for injecting well treating liquid into the bottom of a reservoir interval |
| 12/02/1986 | US4625797 Chemical injection tube mounting structure for a geothermal well |
| 12/02/1986 | US4625795 Geomechanical probe for a drilling well |
| 12/02/1986 | US4625381 Floating wear bushing retriever apparatus |
| 12/02/1986 | CA1214723A1 Device for repetitively connecting and separating an autonomous sumersible module fitted with a conduit that can be linked with a collector |
| 12/02/1986 | CA1214721A1 Submersible pump |
| 11/26/1986 | EP0203003A1 Remotely-controlled assembling device for two items |
| 11/26/1986 | EP0202726A1 Wellhead sealing assembly |
| 11/25/1986 | US4624484 Shrink-fit connector for electrical well subsurface heating processes |
| 11/25/1986 | US4624312 Remote cementing plug launching system |
| 11/25/1986 | US4624311 Locking mechanism for hydraulic running tool for well hangers and the like |
| 11/25/1986 | CA1214388A1 Packer valve arrangement |