04856587 is referenced by 259 patents and cites 11 patents.

The invention comprises a method and apparatus for recovering oil from so-called depleted oil fields and also from tar sands. A pressurized, heated, non-aqueous gas, such as carbon dioxide, is continuously flowed through a channel which is in heat exchange relationship with an oil-bearing matrix, thus reducing the viscosity and mobilizing the oil in the sensible boundary region. Mobilized oil flows to a collection reservoir from which it is then produced.

Title
Recovery of oil from oil-bearing formation by continually flowing pressurized heated gas through channel alongside matrix
Application Number
7/263433
Publication Number
4856587
Application Date
October 27, 1988
Publication Date
August 15, 1989
Inventor
Jay P Nielson
3490 Monte Verde Dr., Salt Lake City, 84109
UT, US
Agent
Robert R Mallinckrodt
Philip A Mallinckrodt
IPC
E21B 43/22
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