05083613 is referenced by 55 patents and cites 53 patents.

A process for producing bitumen employing a borehole that has been drilled into a subterranean hydrocarbon-bearing reservoir having a hydrocarbon. A void space is created at the bottom of the borehole. A bundle of spring-loaded guide tubes is inserted through the borehole and into the void space. Each guide tube is enclosed with a smaller diameter flexible tube that is connected to a source of an emulsifying composition comprising an aqueous phase and an emulsifying agent. The emulsifying agent comprises first and a second ethoxylated alkylphenol compounds wherein at least 1% by weight include more than 100 ethoxy groups. The emulsifying composition is released through the flexible tubes to form an oil-in-aqueous phase emulsion in the reservoir. The oil-in-aqueous emulsion is removed from the reservoir.

Title
Process for producing bitumen
Application Number
934683
Publication Number
5083613
Application Date
April 21, 1989
Publication Date
January 28, 1992
Inventor
Erdal Yildirim
Calgary
CA
Daniel P Rimmer
Broken Arrow
OK, US
John A Hamshar
Owasso
OK, US
Andrew M Olah
Spencer
OH, US
Armand A Gregoli
Tulsa
OK, US
Agent
John Wade Carpenter
Assignee
Canadian Occidental Petroleum
CA
IPC
E21B 43/24
E21B 43/15
View Original Source