Oil recovery optimization using a well having both...

Details Oil recovery optimization using a well having both... Oil recovery optimization using a well having both...

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 43/16 (2006.01) E21B 43/22 (2006.01) E21B 43/30 (2006.01)

Patent

CA 2110202

ABSTRACT OF THE INVENTION A steam, carbon dioxide, or solvent injection method is used in combination witha cased well completed to have an upper vertical section, a lower vertical section and a horizontal section which connects the two vertical sections. Steam, carbon dioxide, or solvent is injected down tubing in the well and through perforations near the lower portion of the lower vertical section of the well and into an oil-bearing formation that is penetrated by the well. Oil is produced from the formation via perforations in the casing in the upper vertical section and thence upward through the annulus formed between the tubing and the casing to the surface of the earth for recovery.

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