06079499 is referenced by 294 patents and cites 7 patents.

A method and apparatus is disclosed for heating of formations using fired heaters. The method includes the steps of:

providing a wellbore within the formation to be heated, the wellbore comprising

a casing within the formation to be heated,

a tubular defining, in the inside of the tubular, a flowpath for hot gases from the surface to a point in the wellbore near the bottom of the formation to be heated, and a volume between the tubular and the casing providing a flowpath for hot gases from near the bottom of the formation to be heated to the top of the formation to be heated, wherein the flowpaths are in communication with each other near the bottom of the formation to be heated and the volume between the casing and the tubular at the top of the formation to be heated is in communication with a point above the surface, and

insulation for a portion of the length of the wellbore within the formation to be heated between the flowpath for hot gases from the surface to the point in the wellbore near the bottom of the formation to be heated and the flowpath for hot gases from near the bottom of the formation to be heated to the surface; and

supplying a flow of hot gases to the flowpath for hot gases from the surface to a point in the wellbore near the bottom of the formation to be heated.

Title
Heater well method and apparatus
Application Number
8/950428
Publication Number
6079499
Application Date
October 15, 1997
Publication Date
June 27, 2000
Inventor
Harold J Vinegar
Houston
TX, US
John Michael Karanikas
Houston
TX, US
Scott Lee Wellington
Houston
TX, US
Thomas Mikus
Houston
TX, US
Agent
Del S Christensen
Assignee
Shell Oil Company
TX, US
IPC
E21B 43/24
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