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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 5488990 | Apparatus and method for generating inert gas and heating injected gas A downhole burner that economically generates hot inert gas and injects this gas into a subterranean formation. The burner has a nipple attached to a first tubing string that carries an oxidizer to the burner. The first tubing string also contains a coil ... | 02/06/1996 |
| 5433271 | Heat injection process A method for heat injection into a subterranean diatomite formation is provided. The method utilizes a heater that is placed directly in the diatomite formation without cement around the heater. Diatomite is very soft, and will quickly fill in around the ... | 07/18/1995 |
| 5404952 | Heat injection process and apparatus A method for heat injection into a subterranean formation is provided. The method utilizes flameless combustion and a gas fired heater having an electrical heated surface for ignition of the gas. The absence of a flame eliminates the flame as a radiant he... | 04/11/1995 |
| 5392854 | Oil recovery process A process to recover oil is provided wherein an oil containing subterranean formation is heated by conductive heat transfer. The high temperature levels of this process result in high recoveries of initial oil in place, and recovery of the oil within a sh... | 02/28/1995 |
| 5297626 | Oil recovery process A process to recover oil is provided wherein an oil containing subterranean formation is heated by conductive heat transfer from heat injectors operating at temperatures above 900° C. The high temperature levels of this process result in high recoveries ... | 03/29/1994 |
| 5255742 | Heat injection process A method for heat injection into a subterranean formation is provided. The method utilizes flameless combustion. The absence of a flame eliminates the flame as a radiant heat source and results in a more even temperature distribution throughout the length... | 10/26/1993 |
| 5224542 | Gas fired radiant tube heater A radiant tube heater is provided for a gas fired burner which fires heated products of combustion into an inner longitudinally-extending tube which is concentrically pinned to an outer longitudinally-extending tube which in turn is concentrically mounted... | 07/06/1993 |
| 5163511 | Method and apparatus for ignition of downhole gas generator A downhole gas generator can be ignited downhole by an ignitor mixture combining with an oxidant. The ignitor mixture is provided by an ignitor subsystem. In one embodiment, the ignitor subsystem bubbles gaseous fuel through a chamber of liquid pyrophoric... | 11/17/1992 |
| 5126037 | Geopreater heating method and apparatus A separate heat source, such an a skin effect heater, is added to a subterranean heat exchanger and oxygen combustion device for upgrading viscous crude oil feeds. An insulated wire is integrated with combustion oxygen supply piping to form the skin effec... | 06/30/1992 |
| 5082055 | Gas fired radiant tube heater An in situ thermal system is disclosed for enhanced oil recovery and the like from a subterranean formation. The system pressurizes the formation with water whereupon the entire formation is heated to relatively high temperatures in the absence of gas for... | 01/21/1992 |
| 5055030 | Method for the recovery of hydrocarbons A method and apparatus for recovering hydrocarbons in a which a first toroidal vortex of fuel and a combustion supporting gas is created with its center adjacent the axis of an elongated combustor; a second toroidal vortex of combustion supporting gas is ... | 10/08/1991 |
| 5008085 | Apparatus for thermal treatment of a hydrocarbon stream An apparatus is disclosed for improving the transportability of a hydrocarbon stream by reducing its viscosity. The apparatus comprises a reactor vessel useful for providing an incremental amount of heat to a hydrocarbon stream by the introduction of an o... | 04/16/1991 |
| 4930454 | Steam generating system Disclosed is a catalytic combustor and systems for the boilerless stoichiometric production of a working fluid such as steam from a fuel-mixture comprised of a carbonaceous fuel and a diluent such as water mixed in a thermally self-extinguishing mass rati... | 06/05/1990 |
| 4861263 | Method and apparatus for the recovery of hydrocarbons A method and apparatus for recovering hydrocarbons in which a first torroidal vortex of fuel and a combustion supporting gas is created with its center adjacent the axis of an elongated combustor; a second torroidal vortex of combustion supporting gas is ... | 08/29/1989 |
| 4726759 | Method and apparatus for stimulating an oil bearing reservoir A method and apparatus for stimulating a subsurface, oil-bearing reservoir, in which a fuel is burned in the presence of a combustion-supporting gas to produce an essentially uncontaminated flue gas at a pressure significantly above the reservoir pressure... | 02/23/1988 |
| 4682471 | Turbocompressor downhole steam-generating system A downhole steam-generating system in which fuel and compressed air from an air compressor unit 20 are fed to a steam generator 22. Steam and/or combustion products are fed to the turbine 24 from the steam generator 22 and the turbine 24 is used to mechan... | 07/28/1987 |
| 4665989 | Well production start up method A method for starting up the production of hydrocarbonaceous fluid from a wellbore which has been shut-in for a time such that the ratio of water to hydrocarbon present in the hydrocarbonaceous fluid in the wellbore is sufficiently high as to make it unec... | 05/19/1987 |
| 4648835 | Steam generator having a high pressure combustor with controlled thermal and mechanical stresses and utilizing pyrophoric ignition A steam generator having substantial thermal capacity for producing high quality steam used primarily for downhole steam generation in tertiary oil recovery. Incorporated in the generator is a novel high pressure, high heat release combustor, utilizing hi... | 03/10/1987 |
| 4589488 | Method for recovery of mineral resources A method for the recovery of mineral resources, such as metallic minerals, petroleum, etc., from solid materials, such as subsurface earth formations, including; partially burning a hydrogen-containing fuel in the presence of an oxidizing agent under cond... | 05/20/1986 |
| 4574886 | Steam drive oil recovery method utilizing a downhole steam generator and anti clay-swelling agent Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a wate... | 03/11/1986 |
| 4558743 | Steam generator apparatus and method A steam generator for producing steam in a confined space such that it can be positioned in a borehole for use in secondary and tertiary recovery of hydrocarbons. Fuel is injected axially into a combustion chamber having a reduced orifice in the bottom th... | 12/17/1985 |
| 4545430 | Catalytic combustor having spiral shape The combustor comprises a single sheet of metal coated with catalyst and wound into a spiral. There is a single spiral passage leading into the core of the spiral. The fuel-air mixture burns on the catalyzed surface of the spiral, and heat is transferred ... | 10/08/1985 |
| 4540052 | Generation of microorganism control composition and use thereof In accordance with the present invention, microorganisms are controlled in a body of fluid, particularly an aqueous fluid containing such microorganisms, by burning a hydrogen-containing fuel in the presence of an oxidizing agent under conditions sufficie... | 09/10/1985 |
| 4522263 | Stem drive oil recovery method utilizing a downhole steam generator and anti clay-swelling agent Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a wate... | 06/11/1985 |
| 4502535 | Jet engine pump and downhole heater A pumping system (10) is disclosed for pumping a fluid (14) from within a borehole (12) to the surface. A combustion engine (18) is employed to drive a pump comprising a pump barrel (28) and an auger pump shaft (32). The pumped fluid is carried from the b... | 03/05/1985 |
| 4499945 | Silane-propane ignitor/burner A silane propane burner for an underground coal gasification process which is used to ignite the coal and to controllably retract the injection point by cutting the injection pipe. A narrow tube with a burner tip is positioned in the injection pipe throug... | 02/19/1985 |
| 4498531 | Emission controller for indirect fired downhole steam generators The present invention provides an indirect downhole steam generator system comprising a downhole combustor, a well casing which provides a flue for the exhaust gases of the downhole combustor, and one or more aerosol nozzles situated within the exhaust fl... | 02/12/1985 |
| 4478280 | Steam drive oil recovery method utilizing a downhole steam generator Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a wate... | 10/23/1984 |
| 4475596 | Well stimulation system The present invention relates to a process for increasing the yield of hydrocarbons from an underground hydrocarbon-bearing formation penetrated by a borehole and wherein a gas generator is located in the borehole at or above the level of the formation. T... | 10/09/1984 |
| 4475883 | Pressure control for steam generator A steam generator including a combustion chamber having fuel and air inlets at the upstream end and a water inlet at the downstream end to inject water into the flue gas, a vaporizer in communication with the downstream end of the combustor and a pressure... | 10/09/1984 |
| 4474237 | Method for initiating an oxygen driven in-situ combustion process A method for initiating an in-situ combustion process for the recovery of oil from a subterranean, viscous oil-containing formation wherein a combustible gas such as natural gas or methane and a mixture of oxygen and carbon dioxide containing 55 to 80 vol... | 10/02/1984 |
| 4473121 | Pressure regulating and relief valve assembly A pressure regulating and relief valve assembly, such as an assembly positionable in a lower portion of a well casing. The valve assembly has a main relief valve assembly or back pressure regulator that is designed to open when the steam pressure exceeds ... | 09/25/1984 |
| 4471839 | Steam drive oil recovery method utilizing a downhole steam generator Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a downhole steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a wate... | 09/18/1984 |
| 4465023 | Programmed combustion steam generator The present invention provides a steam generator which comprises rocket-type multielement injector head and a small diameter, highly elongated, cylindrical combustion chamber whose walls are formed from a plurality of longitudinally adjoined water tubes. ... | 08/14/1984 |
| 4463803 | Downhole vapor generator and method of operation Disclosed is a method and apparatus for generating high pressure steam within a well bore. The steam vapor generator is constructed for receiving and mixing high pressure water, fuel and oxidant in a down-hole configuration. High pressure water is receive... | 08/07/1984 |
| 4459101 | Burner systems A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defin... | 07/10/1984 |
| 4456068 | Process and apparatus for thermal enhancement Thermal treatment apparatus for downhole deployment comprising a combustion stage with an elongated hot wall combustion zone for the substantially complete combustion of the fuel-air mixture and an ignition zone immediately upstream from the combustion zo... | 06/26/1984 |
| 4452309 | Method and means for uniformly distributing both phases of steam on the walls of a well A method comprises (1) piping of exhaust steam flow from a down hole steam generator positioned at the top of a petroliferous reservoir down to the bottom of the reservoir, and (2) reversing the direction of hot exhaust steam flow to saturate the complete... | 06/05/1984 |
| 4446917 | Method and apparatus for producing viscous or waxy crude oils Tubing which contains crude oil being moved to the surface is surrounded by concentric sections of pipe at various depths along portions of the tubing. Said concentric sections of pipe contain a porous media incorporating an oxidizing catalyst in the annu... | 05/08/1984 |
| 4445570 | High pressure combustor having a catalytic air preheater A combustor for generating a mixture of steam and combustion gas is located downhole in an oil well, so that the mixture can be injected directly into the reservoir, to displace heavy oil from the reservoir. The combustion is built up in stages, with each... | 05/01/1984 |
