U.S. Patent Number 6,129,148 Method for reducing the viscosity of clogging hydrocarbons in an oil well. The method utilizes a tube type heat exchanger enabling heated gases to U.S. Patent Number 5,472,341 A burner capable of burning low pressure combustible gas with minimumpollutant emissions. The gas is preheated to hydrocarbon cracking temperatures in a heat exchanger U.S. Patent Number 4,372,386 A method and apparatus for recovering oil from an oil bearing formationutilizing steam injected into the formation. A working fluid is heated at the U.S. Patent Number 4,243,098 A downhole steam apparatus for location within the casing of a well borehole to facilitate oil recovery. A housing adapted to be lowered into