04501326 is referenced by 238 patents and cites 10 patents.

A process for recovering heavy hydrocarbonaceous oil in situ is disclosed. After a communication path is established between injection and production wells, a hot viscous fluid at least 20% of which is produced hydrocarbonaceous oil from the production well is circulated between the wells providing high sweep efficiency and good recovery of oil in place. In a preferred embodiment, the fluid comprises recirculated bitumen from the production well, steam, and small amounts of inert gas and emulsified water. The final stage is a recovery by conventional means.

Title
In-situ recovery of viscous hydrocarbonaceous crude oil
Application Number
6/458517
Publication Number
4501326
Application Date
January 17, 1983
Publication Date
February 26, 1985
Inventor
Neil R Edmunds
Calgary
CA
Agent
R H Saunders
Assignee
Gulf Canada
CA
IPC
E21B 43/24
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