| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/15/1992 | DE4112038A1 Method of closing pipe containing high speed or high pressure contents - consists of piercing hole in outer casing and inserting grid of bolts or rods |
| 10/14/1992 | EP0507838A1 Polymer and asphalt reaction process and polymer-linked-asphalt product |
| 10/14/1992 | CN2118812U Anti-injection box of automatic sealing oil pumping well |
| 10/14/1992 | CN1065317A Method and apparatus for fire extinguishing and gush-stopping of oil/gas well |
| 10/13/1992 | US5154236 Fire extinguishing apparatus |
| 10/13/1992 | US5154234 Wellhead fire extinguisher and method extinguishing a well fire |
| 10/13/1992 | US5154228 Valving system for hurricane plugs |
| 10/10/1992 | CA2065169A1 Retainer ring |
| 10/10/1992 | CA2065168A1 Sealing assembly |
| 10/08/1992 | DE4111738A1 Appts. for extinguishing oil well fires in sandy terrain - used to smother flame and uses integral cooling units to quickly reduce temp. of the immediate area |
| 10/08/1992 | DE4110844A1 Extinguishing borehole fires by conical arrangement placed over fire - to interrupt speed balance between flame front and energy supply |
| 10/08/1992 | DE4110765A1 Applying plaster coating to wall - by using suction source to remove excess moisture to reduce drying-out time |
| 10/08/1992 | DE4110450A1 Fire fighting machine for oil source fires - surrounds root of flame radially and smoothers it using bell movable on holder and closable at top by valve |
| 10/08/1992 | DE4110262A1 Extinguishing oil well fires - using open bottomed bell housing capable of withstanding 6000 deg. C fitted with integral extinguishers, to smother flame |
| 10/07/1992 | WO1992017681A2 Retrievable bridge plug and a running tool therefor |
| 10/06/1992 | US5152639 Tubular footing form for building foundation piles of concrete |
| 10/06/1992 | US5152346 Method and apparatus for extinguishing oil or gas well fires |
| 10/06/1992 | US5152342 Apparatus and method for vibrating a casing string during cementing |
| 10/06/1992 | US5152340 For use in a well bore |
| 10/01/1992 | WO1992016715A1 Process for installing casing in a borehole |
| 10/01/1992 | DE4110431A1 Extinguishing oil well or natural gas fires without use of water or foam supplies - uses a remote controlled vehicle to position a flame snuffing tube |
| 10/01/1992 | DE4109986A1 Sealing of opening in supply pipe for oil etc. - using lance inserted into opening and providing passage into tank so weight of contents overcomes force of escaping oil |
| 09/30/1992 | EP0506192A1 Aqueous gellable composition, useful for modifying the permeability of a petroleum reservoir |
| 09/30/1992 | EP0506191A1 Aqueous gellable composition with delayed gelling time |
| 09/30/1992 | CN2117462U Bare rod falling down ball type blow-out preventer |
| 09/30/1992 | CN1064912A Selective pluggind technology for gas well using polymer compound material ball |
| 09/29/1992 | US5150987 Method for installing riser/tendon for heave-restrained platform |
| 09/29/1992 | US5150756 Well completion apparatus |
| 09/29/1992 | US5150751 Stuffing box leak containment apparatus |
| 09/24/1992 | DE4108779A1 Extinguishing oil fire at borehole, pipeline, etc. - by high pressure water and inert gas pumped into bell placed over outlet and vibrated into ground |
| 09/24/1992 | DE4108776A1 Hinged cover for oil wells - has pipe with flap held in open position to allow easy flow of oil and which can be easily closed to extinguish burning well |
| 09/24/1992 | DE4108727A1 Extinguishing fires at oil and gas wells - by placing heavy plate over borehole leaving gap under plate and smothering with extinguishing agents from safe distance |
| 09/23/1992 | EP0504181A1 Improved process for stabilising rock and/or filling hollows, e.g. in tunnel building and mining |
| 09/23/1992 | CN2116902U Multi-cylinder combined cement starch stabitity testing mould |
| 09/22/1992 | USRE34071 Surface wellhead |
| 09/22/1992 | US5149143 Connector assembly with detachable sleeve |
| 09/22/1992 | US5148870 Well tieback connector sealing and testing apparatus |
| 09/22/1992 | US5148866 Well tool anchoring mechanism with improved slip release |
| 09/22/1992 | US5148865 For oil and gas wells |
| 09/22/1992 | US5148864 High pressure electrical cable packoff and method of making |
| 09/22/1992 | US5148699 Stuffing box leak detector |
| 09/21/1992 | CA2063515A1 Method and apparatus for sealing at a sliding interface |
| 09/17/1992 | DE4108248A1 Method of extinguishing fire in building - involves sealing all openings with sheet of flame resistant material |
| 09/17/1992 | DE4107443A1 Fire-fighting system for oil or gas wells - includes bell-shaped jacket which is covered over fire to maintain it before carbon di:oxide is fed in |
| 09/16/1992 | CN2116085U Blowout prevention valve for oil well |
| 09/16/1992 | CN2116084U Directional well packer |
| 09/16/1992 | CN2116083U Multi-function high pressure polish rod sealer |
| 09/16/1992 | CN1064522A Strengthening plugging method for drilling and cementing on damaged wall of well |
| 09/15/1992 | US5146994 Packing assembly for use with reeled tubing and method of operating and removing same |
| 09/15/1992 | US5146993 Packing mechanism for subterranean wells |
| 09/15/1992 | US5146990 Anchoring structure for marine riser assembly |
| 09/15/1992 | US5146989 Apparatus for recovering a wellhead |
| 09/15/1992 | US5146987 Method and apparatus for controlling the flow of crude oil from the earth |
| 09/15/1992 | US5146985 Wells, alkali borate or zirconium salt |
| 09/15/1992 | US5146983 Hydrostatic setting tool including a selectively operable apparatus initially blocking an orifice disposed between two chambers and opening in response to a signal |
| 09/15/1992 | CA1307460C Plugging apparatus for a gravel packer |
| 09/15/1992 | CA1307459C Pipeline servicing tool |
| 09/09/1992 | EP0502133A1 Straddle packer for inflatable packer |
| 09/09/1992 | CN2115401U Cement structure flotation stopper for well pipe |
| 09/09/1992 | CN1064344A Connecting apparatus |
| 09/08/1992 | US5145006 Tubing hanger and running tool with preloaded lockdown |
| 09/08/1992 | CA2037785A1 Fire extinguishing apparatus for burning gas-and oil-wells |
| 09/08/1992 | CA1307304C Seal |
| 09/02/1992 | EP0501630A2 Casing hanger seal assembly |
| 09/01/1992 | US5143483 Hydraulic stab subassembly for remotely operated vehicle vertical interface tool |
| 09/01/1992 | US5143158 Subsea wellhead apparatus |
| 09/01/1992 | US5143154 Use in a subterranean well |
| 09/01/1992 | US5143015 Coiled tubing set inflatable packer, bridge plug and releasing tool therefor |
| 08/26/1992 | EP0500165A1 Dart launching system for sub-sea cementing head or sub-sea tool for oil wells |
| 08/25/1992 | US5141057 Safety sleeve for a borehole communicating with an underground reserve of fluid under pressure, and associated safety system, and an associated borehole operating method |
| 08/25/1992 | US5141053 Compact dual packer with locking dogs |
| 08/25/1992 | US5141052 Wellhead stuffing box for polished rod and accessories for same |
| 08/20/1992 | WO1992014029A1 Apparatus for carrying out subsea wireline operations |
| 08/19/1992 | EP0499547A1 Underwater wellhead |
| 08/19/1992 | EP0498990A1 Non-rotating cementing plug for wells |
| 08/19/1992 | EP0498925A1 Device for connecting tubes insertable into wells and filled with bentonite |
| 08/19/1992 | EP0425521B1 Process for inserting gel in a well |
| 08/19/1992 | CN2113338U Light compensated self sealing |
| 08/19/1992 | CA2061320A1 Dart launching system for sub-sea cementing head or sub-sea tool for oil wells |
| 08/18/1992 | US5139090 Tubing rotator with downhole tubing swivel |
| 08/11/1992 | US5137087 Casing cementer with torque-limiting rotating positioning tool |
| 08/11/1992 | US5137084 Rotating head |
| 08/11/1992 | US5137083 Wellhead stuffing box for polished rod and accessories for same |
| 08/11/1992 | CA1306187C Well packer |
| 08/11/1992 | CA1306186C Casing hanger and packoff running tool |
| 08/05/1992 | EP0497588A1 Downhole packer apparatus |
| 08/05/1992 | EP0497055A1 High density particulate slurries for well completion |
| 08/05/1992 | CN2112004U Oil well blow-out preventer |
| 08/05/1992 | CN2112003U Automatic eccentric-correcting light rod sealing apparatus |
| 08/04/1992 | US5135266 Casing slips and seal member |
| 08/04/1992 | CA1305867C Caisson tower platform and method of setting same |
| 08/04/1992 | CA1305856C2 Well bore measurement tool |
| 07/31/1992 | CA2060244A1 Hydraulic set packer and testing apparatus |
| 07/29/1992 | EP0496540A1 Downhole inflatable packing apparatus |
| 07/29/1992 | CN2111360U High-pressure self-sealing pressing crack segregating unit |
| 07/28/1992 | US5133412 Pull release device with hydraulic lock for electric line setting tool |
| 07/28/1992 | US5133404 Rotary running tool for rotary lock mandrel |
| 07/28/1992 | CA1305660C Hydraulic versa-trieve packer |
| 07/26/1992 | WO1992013170A1 Shear ram apparatus |
| 07/26/1992 | CA2079001A1 Shear ram apparatus |