1
Neil R Edmunds: In-situ recovery of viscous hydrocarbonaceous crude oil. Gulf Canada, R H Saunders, February 26, 1985: US04501326 (238 worldwide citation)

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 ...


2
Ian P Fisher, Nicolas G Samman: Catalytic hydrocracking in the presence of hydrogen donor. Gulf Canada, R H Saunders, November 27, 1984: US04485004 (73 worldwide citation)

A process is disclosed in which a heavy hydrocarbon oil is converted to lighter products by hydrocracking in the presence of a hydrogen donor material boiling from 200.degree. C. to 300.degree. C. and a particulate hydrogenation catalyst comprising one of cobalt, molybdenum, nickel, tungsten and mix ...


3
Robert Tipman, Yi Cheng Long, William Edward Shelfantook: Solvent process for bitumen seperation from oil sands froth. AEC Oil Sands, AEC Oil Sands Partnership, Athabasca Oil Sands Investments, Canadian Occidental Petroleum, Canadian Oil Sands Investments, Gulf Canada Resources, Imperial Oil Resources, Mocal Energy, Murphy Oil Company, Petro Canada, Millen White Zelano & Branigan P C, April 10, 2001: US06214213 (70 worldwide citation)

A paraffinic solvent is mixed with bitumen froth containing water and solids. Sufficient solvent is added to induce inversion when the mixture is subjected to gravity or centrifugal forces. The emulsion reports to the water phase and a dry bitumen product virtually free of inorganic solids, is obtai ...


4
Herbert S Johnson: Hydraulic mining of tar sands with submerged jet erosion. Gulf Canada, R H Saunders, March 20, 1984: US04437706 (58 worldwide citation)

Bitumen is separated and recovered from tar sands deposits by use of special hydraulic mining techniques. One or more jets of hydraulic mining fluid are projected by a nozzle or nozzles against a face of a tar sands deposit and advanced towards the face as the face erodes under the jetting action. S ...


5
Robert N Tipman, Yi Cheng Long: Solvent process for bitumen separation from oil sands froth. Alberta Energy, Canadian Occidental Petroleum, Esso Resources Canada, Gulf Canada Resources, Her Majesty the Queen in right of Canada represented by the Minister of Natural Resources, HBOG Oil Sands, Pancanadian Petroleum, Petro Canada, Mocal Energy, Murphy Oil Company, Millen White Zelano & Branigan P C, March 2, 1999: US05876592 (57 worldwide citation)

A paraffinic solvent is mixed with bitumen froth containing water and solids. Sufficient solvent is added to induce inversion when the mixture is subjected to gravity or centrifugal forces. The emulsion reports to the water phase and a dry bitumen product is obtained.


6
Lubomyr M O Cymbalisty, George J Cymerman: Treatment of primary tailings and middlings from the hot water extraction process for recovering bitumen from tar sand. Alberta Energy Company, Canadian Occidental Petroleum, Esso Resources Canada, Gulf Canada, Her Majesty the Queen in right of Canada represented by the Minister of Energy and Natural Resources, HBOG Oil Sands, Pan Canadian Petroleum, Petro Canada, Ernest Peter Johnson, October 8, 1985: US04545892 (56 worldwide citation)

The primary tailings and middlings are combined and fed to a vessel having the general form of a deep cone thickener. The feed is deflected outwardly and generally horizontally by a baffle, as it is delivered to the vessel. Simultaneously, the outwardly radiating layer of newly added feed is contact ...


7
George J Cymerman, Antony H S Leung, Waldemar B Maciejewski: Pipeline conditioning process for mined oil-sand. Alberta Energy Company, Canadian Occidental Petroleum, Esso Resources Canada, Gulf Canada Resources, Her Majesty the Queen in right of the Province of Alberta represented by the Minister of Energy and Natural Resources, HBOG Oil Sands Partnership, PanCanadian Petroleum, Petro Canada, Millen White Zelane & Branigan, November 23, 1993: US05264118 (53 worldwide citation)

As-mined, naturally water-wet oil sand is mixed at the mine site with hot water and NaOH to produce a slurry containing entrained air. The slurry is pumped through a pipeline and is fed directly to a conventional gravity separation vessel. The pipeline is of sufficient length so that, in the course ...


8
Aldo Corti, John A Falcon: Method and apparatus for treatment of oil contaminated sludge. Gulf Canada Resources, RTR Oil Sands, Bert J Lewen, Henry Sternberg, March 14, 1989: US04812225 (44 worldwide citation)

Oil containing sludges are treated for the recovery of oil therefrom to render the resultant sludge disposable, by a process of conditioning the sludge to destabilize the emulsified phase thereof, centrifuging the destabilized sludge to obtain a solids-rich material which is largely hydrocarbon free ...


9
Anthony H S Leung, George J Cymerman, Waldemar B Maciejewski: Mixer circuit for oil sand. Alberta Energy Company, Canadian Occidental Petroleum, Esso Resources Canada, Gulf Canada Resources, Her Majesty the Queen in the right of the Province of Alberta, HBOG Oil Sands Partnership, PanCanadian Petroleum, Petro Canada, Millen White & Zelano, August 13, 1991: US05039227 (40 worldwide citation)

The mixer circuit comprises a vertically oriented, open-topped mixer vessel having a cylindrical side wall terminating with a shallow conical bottom. The bottom wall forms a central bottom outlet. Recycled slurry and fresh water streams are fed tangentially to the inner surface of the vessel, thereb ...


10
Waldemar Maciejewski, George Cymerman: Cycloseparator for removal of coarse solids from conditioned oil sand slurries. AEC Oil Sands, AEC Oil Sands Partnership, Athabasca Oil Sands Investments, Canadian Occidental Petroleum, Canadian Oil Sands Investments, Gulf Canada Resources, Imperial Oil Resources, Mocal Energy, Murphy Oil Company, Petro Canada, Millen White Zelano & Branigan P C, September 19, 2000: US06119870 (37 worldwide citation)

A large capacity cyclonic separator is used for desanding a conditioned aqueous oil sand slurry comprising aerated bitumen, water and sand to produce pumpable, pipelineable lean froth and sand tailings. The cyclone separator is a vessel which forms an elongated cylindrical separation chamber and has ...



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