05082055 is referenced by 252 patents and cites 19 patents.

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 formation to significantly decrease the viscosity of substantially all the crude in the formation and permit recovery thereof. A down hole, fuel fired radiant tube burner of long length is provided to achieve the desired heat patterns within the formation. The burner includes three concentric, closed end tubes with the innermost tube containing a burner and spaced closely adjacent the intermediate tube. A hole pattern in the innermost and intermediate tube establishes a laminar flow of the burner's products of combustion therebetween which modifies the radiation heat flux pattern so that uniform heat is emitted from the outermost tube along its length.

Title
Gas fired radiant tube heater
Application Number
469173
Publication Number
5082055
Application Date
January 2, 1991
Publication Date
January 21, 1992
Inventor
Klaus H Hemsath
Toledo
OH, US
Agent
Body Vickers & Daniels
Assignee
Indugas
OH, US
IPC
E21B 43/24
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