1
Winston R Shu: Viscous oil recovery method. Mobil Oil Corporation, Alexander J McKillop, Michael G Gilman, Malcolm D Keen, December 25, 1984: US04489783 (70 worldwide citation)

A subterranean, viscous oil-containing formation is penetrated by at least one injection well extending to the lower portion thereof. A cavity not greater than 0.10 pore volume is formed in the lower portion of the formation through the injection well. At least one spaced-apart production well penet ...


2
Kenny Wong, Wilbur L Hall: Viscous oil recovery method. Texaco, Carl G Ries, Robert A Kulason, Jack H Park, April 13, 1982: US04324291 (48 worldwide citation)

Disclosed is an improved viscous oil recovery method employing the injection of a thermal recovery fluid which may be steam or a mixture of steam and additives, and cycles of pressurization and drawdown. First the thermal recovery fluid is injected and production is restricted in order to increase t ...


3
David A Redford: Viscous oil recovery method. Texaco Exploration Canada, Carl G Ries, Thomas H Whaley, Jack H Park, November 28, 1978: US04127170 (39 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 ...


4
Winston R Shu: Viscous oil recovery method. Mobil Oil Corporation, Alexander J McKillop, Michael G Gilman, Malcolm D Keen, August 21, 1984: US04466485 (28 worldwide citation)

A subterranean, viscous oil-containing formation is penetrated by at least one injection well which extends downwardly from the earth's surface to the formation and then extends a predetermined distance through the formation in a generally horizontal direction. The horizontal section of the injectio ...


5
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 (25 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 ...


6
Winston R Shu: Viscous oil recovery method. Mobil Oil Corporation, A J McKillop, M G Gilman, M D Keen, March 12, 1985: US04503910 (22 worldwide citation)

A subterranean, viscous oil-containing formation not greater than 2500 feet in depth is penetrated by at least one injection well extending into the lower portion thereof. A horizontal fracture is formed in the lower portion of the formation through the injection well. At least one spaced-apart prod ...


7
Winston R Shu, Kathy J Hartman: Viscous oil recovery method. Mobil Oil Corporation, Alexander J McKillop Michael G Gilman Lawrence O Miller, May 29, 1984: US04450911 (20 worldwide citation)

In a thermal method for the recovery of oil from a subterranean, viscous oil-containing formation, steam in an amount ranging from 0.3 to 0.5 pore volume and an injection rate within the range of 4.0 to 7.0 bbl/day/ac.-ft. is injected into the formation via an injection well completed in the lower 5 ...


8
Winston R Shu, Kathy J Hartman: Viscous oil recovery method. Mobile Oil Corporation, Alexander J McKillop, Michael G Gilman, Stanislaus Aksman, July 1, 1986: US04597443 (19 worldwide citation)

In a thermal method for the recovery of oil from a subterranean, viscous oil-containing formation, a predetermined amount of steam in an amount not greater than 1.0 pore volume and an injection rate of 4 to 7 barrels of steam (cold water equivalent) per day per acre-foot of formation is injected int ...


9
Joseph C Allen, Ralph J Korstad: High vertical and horizontal conformance viscous oil recovery method. Texaco, Carl G Ries, Thomas H Whaley, Jack H Park, November 7, 1978: US04124071 (18 worldwide citation)

Disclosed is an oil recovery method especially useful for recovering viscous oil from thick formations including tar sand deposits. The method comprises several phases which accomplish efficient recovery of the viscous oil from the formation with good vertical and horizontal sweep conformance or eff ...


10
David A Redford: Viscous oil recovery method. Texas Exploration Canada, Thomas H Whaley, Carl G Park Jack H Ries, October 24, 1978: US04121661 (17 worldwide citation)

Viscous petroleum may be recovered from viscous petroleum-containing formations such as tar sand deposits in a process employing a cyclical injection-production program in which first steam is injected and fluids are produced without restriction until live steam production occurs at the production w ...