1
David A Redford: In situ gasification of solid hydrocarbon materials in a subterranean formation. Texaco Exploration Canada, Thomas H Whaley, Carl G Ries, Jack H Park, May 31, 1977: US04026357 (245 worldwide citation)

Solid hydrocarbon materials present in subsurface earth formation such as, for example, the coke like residue remaining in a subterranean tar sand deposit which has previously been exploited by controlled oxidation depletion, is converted to a synthesis gas composition by contacting the solid hydroc ...


2
Phillip J Cram, David A Redford: Thermal recovery of hydrocarbons from tar sands. Texaco Exploration Canada, Thomas H Whaley, Carl G Ries, Charles L Bauer, November 23, 1976: US03993132 (228 worldwide citation)

A method for the recovery of low API gravity viscous oils or bitumen from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam having an optimum gas/steam ratio that is decreased as the cumulative amount of steam is increased.


3
David A Redford, Stephen M Creighton: Thermal recovery of hydrocarbon from tar sands. Texaco Exploration Canada, T H Whaley, C G Ries, Charles L Bauer, February 8, 1977: US04006778 (222 worldwide citation)

A method for the recovery of low API gravity viscous oils or bitumens from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam at a temperature corresponding to the temperature of saturated steam at the pressure of the formation.


4
David A Redford, Mohsen R Hanna: Gaseous and solvent additives for steam injection for thermal recovery of bitumen from tar sands. Alberta Oil Sands Technology and Research Authority, Max L Wymore, June 9, 1981: US04271905 (54 worldwide citation)

A process is provided for the recovery of hydrocarbons from a reservoir of heavy oil containing sands. An injection stream comprising steam, hydrocarbon diluent, and a gas which is gaseous at formation temperature and pressure and soluable in the formation fluids at injection pressure is injected in ...


5
David A Redford: Viscous oil recovery method. Texaco Exploration Canada, Carl G Ries, Thomas H Whaley, Jack H Park, November 28, 1978: US04127170 (36 worldwide citation)

Viscous petroleum may be recovered from formations in a process employing steam and a light hydrocarbon, and a cyclical injection-production program comprising repetitive cycles, each comprising three steps. First steam or steam and hydrocarbons are injected and liquids are recovered from the format ...


6
David A Redford: Method for recovery of bitumens from tar sands. Texaco Exploration Canada, T H Whaley, C G Ries, Charles L Bauer, September 7, 1976: US03978925 (26 worldwide citation)

A method for the recovery of low gravity viscous oils or bitumens from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam to establish a hot communications path, followed by a shutting in of the wells for a period to allow the oxygen to react with the oil or ...


7
David A Redford, David L Mitchell: Method for recovering viscous asphaltic or bituminous petroleum. Texaco Exploration Canada, T H Whaley, C G Ries, Jack H Park, February 17, 1976: US03938590 (22 worldwide citation)

Disclosed is a process for recovering petroleum from subterranean, viscous asphaltic or bituminous petroleum-containing formations, including subterranean tar sand deposits. A zone of gas permeability is established in the formation first, such as by fracturing or gas sweeping a section of the forma ...


8
David A Redford, Phillip J Cram: Viscous oil recovery method. Texaco Exploration Canada, Carl G Ries, Thomas H Whaley, Jack H Park, November 28, 1978: US04127172 (21 worldwide citation)

Viscous petroleum may be recovered from viscous petroleum-containing formations such as tar sand deposits in a process employing steam and air or a free oxygen-containing gas in the ratio of 0.05 to 0.65 M.S.C.F. per bbl. and a cyclical injection-production program in which first steam or steam and ...


9
Joseph C Allen, David A Redford: Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits. Texaco, Texaco Exploration Canada, Carl G Ries, Thomas H Whaley, Jack H Park, August 29, 1978: US04109720 (18 worldwide citation)

Petroleum may be recovered from viscous petroleum-containing formations including tar sand deposits by injecting into the formation a solvent which is liquid at formation conditions and simultaneously therewith injecting a substance which will remain totally gaseous at the pressure and temperature c ...


10
Petre Toma, David A Redford, Declan B Livesey, Roy M Coates: Well with sand control and stimulant deflector. Texaco Canada Resources, Robert A Kulason, Robert B Burns, August 6, 1985: US04532994 (17 worldwide citation)

A well completion and method for improving the productivity of hydrocarbon emulsion from a substrate layer which holds the hydrocarbon. The well completion includes an elongated substantially horizontally disposed liner, the walls of which are perforated to receive the emulsion from the substrate. O ...



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