1
Willem P C Duyvesteyn, Julia Rose Budden, Merijn Amilcare Picavet: Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands. BHP Minerals International, Hopgood Calimafde Kalil & Judlowe, October 19, 1999: US05968349 (370 worldwide citation)

A process for the extraction of bitumen from bitumen froth generated from tar sands is disclosed. In this process, bitumen froth is extracted from tar sands using a water process without requiring the use of caustic soda. The froth is treated in a counter-current decantation circuit with a paraffini ...


2
Armand A Gregoli, John A Hamshar 3rd, Daniel P Rimmer, Erdal Yildirim, Andrew M Olah: Process for recovery of hydrocarbons and rejection of sand. Canadian Occidental Petroleum, John W Carpenter, August 23, 1994: US05340467 (287 worldwide citation)

A process for recovering a hydrocarbon from a hydrocarbon bearing sand comprising the steps of mixing a chemical additive with a chemical composition and with a hydrocarbon bearing sand containing hydrocarbon and residual solids including clay, at a temperature to form a slurry. The chemical composi ...


3
Armand A Gregoli, John A Hamshar, Daniel P Rimmer, Erdal Yildirim: Process for recovery of hydrocarbons and rejection of sand. Canadian Occidental Petroleum, John Wade Carpenter, May 31, 1994: US05316664 (280 worldwide citation)

A process suitable for operation at a mine site for recovering a hydrocarbon from a hydrocarbon bearing sand comprising the steps of mixing a chemical additive with a chemical composition and with a hydrocarbon bearing sand containing hydrocarbon and residual solids including clay, at a temperature ...


4
Reginald D Humphreys: Tar sands extraction process. Geopetrol Equipment, Bennett Jones, November 16, 1999: US05985138 (253 worldwide citation)

A hot water extraction process for extracting bitumen from tar sands is taught wherein the tar sand is conditioned using an alkali metal bicarbonate, an alkali metal carbonate and a liquid hydrocarbon. A source of calcium and/or magnesium ions can also be added. The conditioning step replaces the st ...


5
Francis V Hanson, Jan D Miller, Alex G Oblad: Process for recovering products from tar sand. University of Utah, H Ross Workman, Allen R Jensen, Dale E Hulse, October 11, 1983: US04409090 (248 worldwide citation)

A combination physical separation process and thermal fluidized bed process for recovering products from tar sands. The process includes initially separating a portion of the sand from the tar sand through a physical separation process, yielding a bitumen-rich concentrate. The bitumen-rich concentra ...


6
John D McCollum, Leonard M Quick: Process for recovering and upgrading hydrocarbons from oil shale and tar sands. Standard Oil Company, James R Henes, Arthur G Gilkes, William T McClain, April 6, 1976: US03948755 (240 worldwide citation)

A process for recovering and upgrading hydrocarbons from oil shale and tar sands by contacting the oil shale or tar sands with a dense-water-containing fluid at a temperature in the range of from about 600.degree.F. to about 900.degree.F. in the absence of externally supplied hydrogen and in the pre ...


7
Thomas G Scott, Frederick B Seufert, Edward J Hanzlik: Process for extracting hydrocarbons from diatomite. Texaco, Kenneth R Priem, James L Bailey, Cynthia L Hunter, November 5, 1996: US05571403 (201 worldwide citation)

An improved process for extracting hydrocarbons from a diatomite ore which comprises the combination of the steps of:


8
John D McCollum, Leonard M Quick: Process for recovering and upgrading hydrocarbons from oil shale. Standard Oil Company, James L Wilson, Arthur G Gilkes, William T McClain, April 24, 1979: US04151068 (87 worldwide citation)

A process for recovering and upgrading hydrocarbons from oil shale by contacting the oil shale solids in the presence of an acidic or oxidative catalytic substance with a water-containing fluid at a temperature in the range of from at least 705.degree. F., the critical temperature of water, to about ...


9
Frederick C Stuchberry, Alfred E Backstrom: Process for recovery of bitumen from a bituminous froth. Shell Canada, Shell Explorer, July 12, 1977: US04035282 (86 worldwide citation)

An improved method for recovery of bitumen form bituminous froth is disclosed having particular application in hot water separation of tar sands wherein comminuted tar sand is slurried in hot water, subject to gravity separation to isolate a bituminous froth, containing water and mineral matter, and ...


10
Robert J Graham, John J Helstrom, Lawrence B Peck, Richard A Stone, Edward J Bernier Jr: Methods of tar sand bitumen recovery. Amoco Corporation, Nick C Kottis, William H Magidson, Robert J Wagner, September 1, 1992: US05143598 (83 worldwide citation)

Methods for the recovery of bitumen from tar sands comprising the steps of mixing tar sand, solvent and a displacing amount of aqueous medium to form a mixture, followed by separating a bitumen-rich solvent phase from the mixture and recovering bitumen from the bitumen-rich solvent phase are disclos ...