| Patents for E21B 35 - Methods or apparatus for preventing or extinguishing fires (324) |
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| 08/31/2000 | DE19906630A1 System for fire fighting comprises a shielding bell that covers the fire to remove oxygen from it |
| 07/05/2000 | CN1054177C Automatic fire-extinguishing device |
| 04/05/2000 | CN2372446Y High-pressure hydraulic sand-blasting cutting device with fire |
| 03/21/2000 | CA2064667C Fire retarded solvents |
| 02/09/2000 | CN1049271C Extinguishing device for petrolum well |
| 01/05/2000 | CN1240493A System for controlling and stopping oil drilling fires |
| 11/30/1999 | US5992544 Fire suppression apparatus for well drilling system |
| 11/02/1999 | US5975219 Method for controlling entry of a drillstem into a wellbore to minimize surge pressure |
| 07/06/1999 | USRE36244 Well plugging apparatus and method |
| 05/26/1999 | CN2320785Y Dytory pressing injector |
| 04/06/1999 | US5890549 Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus |
| 11/03/1998 | US5829528 Ignition suppression system for down hole antennas |
| 07/02/1998 | WO1998028517A1 Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus |
| 07/02/1998 | CA2274169A1 Well drilling system with closed circulation of gas drilling fluid and fire suppression apparatus |
| 06/25/1998 | CA2273996A1 System for controlling and stopping oil drilling fires |
| 01/28/1998 | EP0591211B1 Reversible transformation of hydrocarbons |
| 07/22/1997 | CA2052446C Device for quenching open air fires |
| 04/02/1997 | CN1146525A Extinguishing device for petroleum well |
| 01/28/1997 | US5597041 Well head cutting and capping system |
| 01/15/1997 | CN1140226A Automatic fire-extinguishing device |
| 11/12/1996 | US5573067 Apparatus for extinguishing an oil well fire |
| 02/28/1996 | EP0698175A1 Well plugging apparatus and method |
| 11/21/1995 | US5468261 Reversible transformation of hydrocarbons |
| 10/03/1995 | CA2067428C Mechanism and process to extinguish fires |
| 09/19/1995 | US5450906 Method and means of extinguishing fires in oil wells |
| 07/25/1995 | US5435388 Well plugging apparatus and method |
| 03/14/1995 | US5396960 Vent gas flame suppressing apparatus for offshore oil and gas producing platforms |
| 02/09/1995 | WO1995003853A1 Oil well fire snuffer |
| 12/21/1994 | EP0629655A1 Process for creating dams or process for filling with self-foaming phenolic resins, particularly in mining |
| 11/10/1994 | WO1994025725A1 Well plugging apparatus and method |
| 11/08/1994 | US5361840 Well plugging apparatus and method |
| 09/21/1994 | CN1025968C Extinguishing guiding oil device and extinguishing method for shaped nose cone |
| 09/20/1994 | US5348100 Apparatus and method for controlling oilwell fire |
| 09/14/1994 | EP0614482A1 Fire retarded solvents |
| 07/05/1994 | US5325927 Device for quenching open air fires |
| 06/29/1994 | EP0603181A1 A system for extinguishing an oil well subjected to very high pressure |
| 06/08/1994 | CN2168067Y Automatic gas-cutting fire-extinguishing valve |
| 05/24/1994 | CA2005806C Well packing system |
| 05/11/1994 | DE4117132A1 Transport of packaged material for extinguishing e.g. oil fire - using plastic bags or metal containers to be ruptured at target for distribution of contents |
| 05/10/1994 | US5309989 Oil well fire extinguishing apparatus |
| 04/13/1994 | EP0591211A1 Reversible transformation of hydrocarbons |
| 04/05/1994 | US5299646 Method and means of extinguishing fires in oil wells |
| 03/30/1994 | CN1024101C Method and apparatus for fire extinguishing and gush-stopping of oil/gas well |
| 03/02/1994 | CN1023910C Fire extinguisher set for oil well |
| 02/28/1994 | CA2077028A1 Oil/gas separator for installation at burning wells |
| 01/04/1994 | US5275244 Apparatus and process for extinguishing fires with a noncombustible fluid in liquid and gaseous states |
| 10/12/1993 | US5252005 Cylinder rod fire protection system |
| 09/30/1993 | WO1993019279A1 Emergency catcher for a riser tensioning apparatus |
| 09/30/1993 | WO1993018823A1 Method for suppression of gas, oil and gas-oil well gusher fire |
| 09/28/1993 | US5247999 Oil wellhead fire extinguishing apparatus having adjustable support feet and labyrinth module |
| 08/24/1993 | US5238071 Oil well fire snuffer |
| 08/24/1993 | EP0591211A4 Reversible transformation of hydrocarbons. |
| 08/05/1993 | DE4218626C1 Arrangement for reducing cross=sectional area of pipe, e.g. oil conveying pipe - includes explosive charge on 1 of 2 jaws for detonating and forcing jaws against pipe |
| 07/14/1993 | CN1074268A Shaped warhead for perforating oil-supply unit for fire extinguishing and fire-extinguishing method thereof |
| 07/01/1993 | CA2058616A1 Stud plug well extinguishing bogey wogey flame starver, and ballistic blowout control delivery |
| 06/10/1993 | WO1993011205A1 Fire retarded solvents |
| 05/25/1993 | US5213157 Clamping device for capping oil wells and the like, and apparatus for mounting same |
| 05/11/1993 | US5209175 Emergency release device for drilling |
| 05/04/1993 | US5207953 Mixture with acyclic brominated hydrocarbon; oil and gas well fluids |
| 05/04/1993 | US5207779 Method and apparatus for closing a wellhead casing |
| 04/15/1993 | WO1993007357A1 An apparatus for stopping a blowout from an oil or gas well |
| 04/06/1993 | US5199499 Oil well fire capper/snuffer |
| 03/23/1993 | US5195593 Cylindrical stack for confining and extinguishing an oil well fire |
| 03/18/1993 | WO1993005268A1 Device for capping the end of a pipe through which a fluid flows, in particular an oil well |
| 03/09/1993 | US5191940 Oil/gas separator for installation at burning wells |
| 03/04/1993 | DE4128876A1 Fire extinguisher for fuel storage tank - consists of lower cylindrical cap with central hole for upper conical cap |
| 03/03/1993 | CN1069550A Fire-extinguishing for explosion crimping and explosion cutting of oil well |
| 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 |
| 02/02/1993 | US5183117 Fire extinguisher |
| 01/27/1993 | CN1068391A Fire-extinguishing technology for oil field (oil well) |
| 01/21/1993 | DE4124188A1 Extinguishing burning oil well - by towing blocks on rail over seat of fire and choking fire quickly |
| 01/19/1993 | US5180018 Split stack fire-fighting apparatus and process of use |
| 01/14/1993 | DE4122971A1 Extinguishing column of burning oil and gas from oil well - by spraying liq. nitrogen@ or water into column meniscus from enclosure |
| 01/14/1993 | DE4122684A1 Extinguishing burning oil wells using fully mechanised method - by encircling with wall having central crater into which rocks or concrete blocks are conveyed and providing pipe system for feeding extinguishing agent, extracting oil, etc. |
| 01/09/1993 | CA2046492A1 Process and devices for closing-off high pressure and high flow tube, in particular tubes derived from burning oil wells |
| 01/07/1993 | WO1993000135A1 Method and vehicle for suppressing oil well fires using liquid nitrogen |
| 01/07/1993 | DE4122392A1 Shut=off equipment for burning oil or gas well - includes bush inserted into well-tubing and fitted with slide valve |
| 01/05/1993 | CA2046266A1 Oil well fire fighting tool |
| 12/29/1992 | US5174380 Gas venting apparatus |
| 12/23/1992 | WO1992022352A1 Method and apparatus for closing a wellhead casing |
| 12/23/1992 | CN1067289A Method and apparatus for extinguishing heavy fire of blowout |
| 12/23/1992 | CN1067288A Extinguisher for oil well and natural gas well and extinguishing method |
| 12/17/1992 | DE4114767A1 Oil fire extinguishing assembly e.g. for oil well - has system for repairing extinguished well, contg. bell with mobile rotatable tube, for emptying oil and immediate recovery |
| 12/16/1992 | CN1067094A Method and apparatus for extinguishing fire by shut-in oil well |
| 12/16/1992 | CN1067093A Method and special apparatus for extinguishing fire and preventing blowout by sealing and drainage |
| 12/15/1992 | US5170846 System and apparatus for controlling a well |
| 12/09/1992 | CN2124305U Fire-extinguishing apparatus for high pressure oil well or gas well |
| 12/08/1992 | US5169265 Passive fire protection system for marine risers |
| 12/04/1992 | CA2043802A1 Oil well fire suppression system |
| 12/03/1992 | DE4117251A1 Fire-extinguishing arrangement easy to transport - comprising hood made of cloth of non-flammable material fastened around rigid frame and movable on wheels |
| 11/26/1992 | DE4116761A1 Device for temporary closure of defective oil riser pipe arrangement - has housing with at one end an opening at which housing can be attached to defective arrangement |
| 11/24/1992 | US5165484 Oil well fire extinguisher having oil jet dispersing screens |
| 11/24/1992 | US5165483 Direct contact vapor generator fire suppression apparatus |
| 11/19/1992 | DE4116287A1 Lightweight, covered fire extinguishing bell for oil fire - comprises asbestos-coated cover material, heat resistant framework pipes with coolant flowing through and gas-tight interior made inert by supplying nitrogen@ |
| 11/19/1992 | DE4116130A1 Extinguishing oil well fires and blowouts - uses hollow conical chamber and attached valve and fills chamber with quick setting concrete only after correct positioning |
| 11/19/1992 | DE4115712A1 Sealing and extinguishing oil or natural gas blowouts - comprises dropping concrete or metal cap vertically over blowout to snuff out fires, and uses integral valves to put well head back into prodn. quickly |
| 11/12/1992 | WO1992019903A1 Multilayer fire protective coating |
| 11/12/1992 | WO1992019323A1 A system for extinguishing an oil well subjected to very high pressure |
| 11/12/1992 | DE4115523A1 Extinguisher for oil fires - uses inert gas e.g. nitrogen@, which screens rising flames from surrounding air |
| 11/12/1992 | DE4114689A1 Appts. for extinguishing borehole fires in oil deposits - includes sliding carriage pushed over borehole so that aperture in carriage bottom takes oil outflow for direct piping away |