| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 04/22/1993 | DE4133531A1 Deep well water regeneration - has pulsed flow of medium through the filter w.r.t. pH values and filter resistance with independent action on separate sections |
| 04/20/1993 | US5203414 Method of anchoring a device in a wellbore including opening an orifice between two chambers in response to an electrical signal and moving a piston in response to hydrostatic pressure when the orifice is opened |
| 04/20/1993 | US5203412 Well completion tool |
| 04/20/1993 | US5203409 Geothermal well apparatus and eccentric hanger spool therefor |
| 04/20/1993 | US5203374 Pressure balanced hydraulic coupling with metal seals |
| 04/20/1993 | CA1316455C Running tool |
| 04/15/1993 | WO1993007357A1 An apparatus for stopping a blowout from an oil or gas well |
| 04/15/1993 | WO1993005267A3 Pack-off tool |
| 04/14/1993 | CN2129817Y Blasthole blocking device for oil field water blocking |
| 04/14/1993 | CN1070937A Oil well porthole resin small ball sealing agent and its made method |
| 04/13/1993 | US5202522 Deep well storage of radioactive material |
| 04/13/1993 | US5201835 Wellhead seal with protective rib |
| 04/13/1993 | US5201369 Reinflatable external casing packer |
| 04/13/1993 | CA1316103C Diverter system test tool and method |
| 04/07/1993 | EP0535277A1 Tubing suspension equipment for a wellhead |
| 04/06/1993 | US5199683 Blowout preventer opening mechanism |
| 04/06/1993 | US5199499 Oil well fire capper/snuffer |
| 04/06/1993 | US5199497 Shape-memory actuator for use in subterranean wells |
| 04/06/1993 | US5199495 Split wear bushing for a drilling rig |
| 04/06/1993 | US5199489 Method of cementing well casing to avoid gas channelling from shallow gas-bearing formations |
| 04/06/1993 | CA1315673C Cementing and rotating an upper well casing attached by swivel to a lower casing |
| 04/06/1993 | CA1315672C Stage cementing valve |
| 04/01/1993 | WO1993006336A1 Downhole activated system for perforating a wellbore |
| 04/01/1993 | WO1993006331A1 Well drilling pressure control method and apparatus |
| 03/31/1993 | EP0465623A4 Method and apparatus for sealing pipe perforations |
| 03/30/1993 | US5197547 Wireline set packer tool arrangement |
| 03/30/1993 | US5197543 Horizontal well treatment method |
| 03/30/1993 | US5197542 Well packer |
| 03/30/1993 | CA1315194C Tools for treating subterranean wells |
| 03/28/1993 | CA2073535A1 Well tool anchoring mechanism with improved slip release |
| 03/23/1993 | US5195591 Permanent whipstock and placement method |
| 03/23/1993 | US5195590 Method and apparatus for protecting an environmental monitoring well head |
| 03/23/1993 | US5195588 Apparatus and method for testing and repairing in a cased borehole |
| 03/23/1993 | US5195584 Sealing apparatus for repairing breaches in casing |
| 03/23/1993 | US5195583 Borehole packer |
| 03/18/1993 | WO1993005269A1 Improved slip stream device with adjustable choke, and method of choking a fluid flow path |
| 03/18/1993 | WO1993005268A1 Device for capping the end of a pipe through which a fluid flows, in particular an oil well |
| 03/18/1993 | WO1993005267A2 Pack-off tool |
| 03/17/1993 | EP0507838A4 Polymer and asphalt reaction process and polymer-linked-asphalt product |
| 03/16/1993 | US5193620 Whipstock setting method and apparatus |
| 03/16/1993 | US5193616 Tubing hanger seal assembly |
| 03/16/1993 | CA1314475C Emplacement of filter packs and seals for groundwater monitoring |
| 03/09/1993 | US5191940 Oil/gas separator for installation at burning wells |
| 03/09/1993 | US5191939 Casing circulator and method |
| 03/09/1993 | US5191932 Oilfield cementing tool and method |
| 03/09/1993 | US5191931 Fluid loss control method |
| 03/09/1993 | CA1314206C Annulus valve for concentric tubing hangers |
| 03/03/1993 | CN2127742Y Sealing cementing device used on well heads |
| 03/02/1993 | US5190109 Method and apparatus for isolating well bores using external packers |
| 03/02/1993 | US5190104 Aqueous solution of alkali metal, ammonium or organoammonium silicate; spacer volume of water-immiscible hydrocarbon liquid; water-miscible organic solvent containing alkyl polysilicate to react with silicate to form silica cement |
| 03/02/1993 | US5189919 Wellhead fluid sampler |
| 03/02/1993 | US5189909 Device for measuring properties of underground water and method therefor |
| 02/24/1993 | EP0528328A2 Well packer |
| 02/24/1993 | EP0528327A2 Well packer |
| 02/24/1993 | EP0527932A1 Preform device and process for coating and/or lining a cylindrical volume |
| 02/24/1993 | EP0527858A1 Production systems for underwater wells |
| 02/24/1993 | EP0527773A1 Anti-rotation device for use in wellbores |
| 02/23/1993 | US5188397 Clamp and clamp supporting apparatus |
| 02/23/1993 | US5188183 Method and apparatus for controlling the flow of well bore fluids |
| 02/23/1993 | US5188181 Annulus shutoff device for a subsea well |
| 02/23/1993 | US5188180 Hydraulic circuit for a well tool |
| 02/23/1993 | US5188178 Method and apparatus for automatic well stimulation |
| 02/23/1993 | US5188177 Magnetic-pulse sealing of oil-well-head pipe |
| 02/23/1993 | US5188176 Cement slurries for diviated wells |
| 02/23/1993 | US5188173 Pressure control system and cable guiding device for use in drilling wells |
| 02/20/1993 | WO1993004261A1 Improved inflatable packer |
| 02/20/1993 | WO1993004260A1 Improved inflatable packer |
| 02/20/1993 | CA2094240A1 Inflatable packer |
| 02/20/1993 | CA2091252A1 Inflatable packer |
| 02/20/1993 | CA2076332A1 Method of reducing fluid loss in cement compositions |
| 02/18/1993 | WO1993003253A1 Method and apparatus for isolating a zone of a wellbore and extracting a fluid therefrom |
| 02/18/1993 | WO1993003252A1 Whipstock setting method and apparatus |
| 02/18/1993 | WO1992017681A3 Retrievable bridge plug and a running tool therefor |
| 02/17/1993 | EP0527619A1 Wet christmas tree |
| 02/17/1993 | EP0527618A1 Satellite tree module and flow line structure for interconnection of a satellite well to a subsea production system |
| 02/17/1993 | CA2075432A1 Well packer |
| 02/17/1993 | CA2075431A1 Well packer |
| 02/16/1993 | US5186258 Horizontal inflation tool |
| 02/16/1993 | US5186253 Portable groundwater sampling device |
| 02/11/1993 | DE4126540A1 Sealing arrangement for burning oil well - comprises assembly of rings joined by solidified tin which can be carried by plane or helicopter |
| 02/09/1993 | US5184686 Method for offshore drilling utilizing a two-riser system |
| 02/09/1993 | US5184677 Pass-through zone isolation packer and process for isolating zones in a multiple-zone well |
| 02/09/1993 | US5184608 Well pipe top cap |
| 02/08/1993 | CA2075271A1 Casing cementer with torque-limiting rotating positioning tool |
| 02/06/1993 | CA2055874A1 Method and apparatus for isolating a zone of a wellbore and extracting a fluid therefrom |
| 02/03/1993 | EP0524952A1 A system for the control and monitoring of surface or subsea hydrocarbon production |
| 02/02/1993 | US5183268 Metal-to-metal wellhead seal for rough casing |
| 02/02/1993 | US5183108 Inflatable packer |
| 01/26/1993 | US5181730 Sealing system for abutting tube ends in a pipe conduit |
| 01/26/1993 | US5181571 Well casing flotation device and method |
| 01/26/1993 | CA1313128C Method of treating a permeable formation |
| 01/26/1993 | CA1313127C Method of protecting a permeable formation |
| 01/21/1993 | WO1993001362A1 Borehole plug |
| 01/21/1993 | DE4124188A1 Extinguishing burning oil well - by towing blocks on rail over seat of fire and choking fire quickly |
| 01/20/1993 | EP0523301A1 Wellhead casing suspension |
| 01/20/1993 | CN1068163A Injection-type chemical composition for stabilization and reinforcement process using same |
| 01/19/1993 | US5180137 Ram type blowout preventer having improved ram front packings |
| 01/19/1993 | US5180016 Apparatus and method for placing and for backwashing well filtration devices in uncased well bores |
| 01/19/1993 | US5180010 Multiple acting lock for gravel pack system |
| 01/19/1993 | US5180008 Wellhead seal for wide temperature and pressure ranges |