1
Donald J Anderson, Charles F Kirkvold, Peter Pisio: Method of recovering viscous petroleum from tar sand. Chevron Research Company, R L Freeland Jr, Edward J Keeling, November 30, 1976: US03994340 (275 worldwide citation)

Recovery of viscous petroleum such as from tar sands is assisted using a substantially vertical passage from the earth's surface which penetrates the tar sand and has extending therefrom a lateral hole containing a flow path isolated from the tar sand for circulating a hot fluid to and from the vert ...


2
Ronald K Churchman: Method and apparatus for recovering viscous petroleum from tar sand. Otis Engineering Corporation, Vinson & Elkins, February 3, 1981: US04248302 (72 worldwide citation)

A method of recovering viscous petroleum from tar sand formations utilizing a deviated steam injection well with pump-down (through the flow line) completion. The steam injection well may use side pocket mandrels with constant flow or orifice regulators to control steam injection rates into the surr ...


3
Pisio Peter, Kirkvold Charles F, Anderson Donald J: Methode dextraction du petrole visqueux des sables bitumineux, Method of recovering viscous petroleum from tar sand. Chevron Research And Technology Company, August 14, 1979: CA1060340

ABSTRACT OF THE DISCLOSUREMETHOD OF RECOVERING VISCOUS PETROLEUM FROM TAR SAND Recovery of viscous petroleum such as from tar sandsis assisted using a substantially vertical passage from theearth's surface which penetrates the tar sand and has exten-ding therefrom a lateral hole containing a flow pa ...


4
Churchman Ronald K: Methode de separation du petrole lourd en presence dans les sables bitumineux, Method of recovering viscous petroleum from tar sand. Otis Engineering Corporation, SMART & BIGGAR, April 27, 1982: CA1122519

METHOD OF RECOVERING VISCOUS PETROLEUM FROM TAR SAND Abstract of the Disclosure A method of recovering viscous petroleum from tar sand formations utilizing a deviated steam injection well with pumpdown (through the flow line) completion. The steam injection well may use side pocket mandrels with con ...


5
Anderson Donald J: Procede dextraction du petrole visqueux de certaines formations souterraines, Method of recovering viscous petroleum from an underground formation. Chevron Research And Technology Company, June 26, 1979: CA1057190

ABSTRACT OF THE DISCLOSURE Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid in a flow path within the formation but out of direct contact with the viscous petroleum; thus a solid-wall, hollow tubular member in the formation is used for conducting ...