1
John C Todd: Method of producing viscous materials from subterranean formations. Petro Canada Exploration, Canada Cities Services, Imperial Oil, Hubbard Thurman Turner Tucker & Glaser, April 18, 1978: US04084637 (257 worldwide citation)

A method of producing viscous materials from subterranean formation comprises a plurality of steps. At least two wells are drilled and completed into the subterranean formation that contains the viscous material. At least one of the wells is completed as an injection well and one of the wells is com ...


2
John C Todd: Electrode well for electrically heating a subterranean formation. Petro Canada Exploration, Canada Cities Services, Imperial Oil, Hubbard Thurman Turner Tucker and Glaser, April 18, 1978: US04084639 (15 worldwide citation)

An improved electrode for electrically heating a subterranean formation includes a plurality of electrically conductive rod-like members that extend outwardly from a central well bore to provide increased area for conducting electrical current from a source into said subterranean formation. The impr ...


3

4

5

6
Sanford Emerson, Shaw Robert: Emulsion de bitumen et dune solution aqueuse dhydroxyde de sodium diminuant ladhesivite des sables bitumineux au convoyeur, Bitumen-sodium hydroxide-water emulsion release agent for bituminous sands conveyor belt. Gulf Oil Canada, Imperial Oil, Canada Cities Services, Ontario Energy Corporation, Her Majesty The Queen In Right Of The Province Of Alberta, Petro Canada Exploration, JOHNSON ERNEST PETER, August 26, 1980: CA1084204

ABSTRACT OF THE DISCLOSURE An emulsion of bitumen is sodium hydroxidesolution containing at least 1 wt. % bitumen as the dispersephase is useful, when spread over the load-bearing surfaceof a conveyor carrying bituminous sands, to act as a releaseagent to promote the clean separation of the tacky sa ...