1
Michel Gondouin: Heavy oil recovery process. S Cal Research, November 17, 1987: US04706751 (299 worldwide citation)

Heavy oil is recovered from deep reservoirs by injection of a gaseous mixture containing hydrogen, steam and in some cases oil soluble gases and/or vapors. This mixture is produced by a reversible exothermic catalytic reaction in a down-hole reactor and injected into a well drilled, preferably horiz ...


2
Harold J Vinegar, Eric P DeRouffignac, Carlos A Glandt, Thomas Mikus, Mark A Beckemeier: Oil recovery process. Shell Oil Company, Del S Christensen, March 29, 1994: US05297626 (288 worldwide citation)

A process to recover oil is provided wherein an oil containing subterranean formation is heated by conductive heat transfer from heat injectors operating at temperatures above 900.degree. C. The high temperature levels of this process result in high recoveries of initial oil in place, and recovery o ...


3
Harold J Vinegar, Eric P De Rouffignac, Carlos A Glandt, Thomas Mikus, Mark A Beckemeier: Oil recovery process. Shell Oil Company, Del S Christensen, February 28, 1995: US05392854 (283 worldwide citation)

A process to recover oil is provided wherein an oil containing subterranean formation is heated by conductive heat transfer. The high temperature levels of this process result in high recoveries of initial oil in place, and recovery of the oil within a short time period. This process is particularly ...


4
Peter Vanmeurs, Monroe H Waxman, Harold J Vinegar: In-situ steam drive oil recovery process. Shell Oil Company, February 3, 1987: US04640352 (281 worldwide citation)

An oil and water-containing subterranean reservoir can be heated in a manner capable of inducing an economically feasible production of oil from zones which were initially so impermeable as to be undesirably unproductive in response to injections of oil recovery fluids. Treatment zones of specified ...


5
Winston R Shu, Kathy J Hartman: Thermal recovery method for viscous oil. Mobil Oil Corporation, A J McKillop, Michael G Gilman, George W Hager Jr, July 8, 1986: US04598770 (279 worldwide citation)

A thermal oil recovery process in which steam is injected into a heavy oil-bearing formation through a horizontally-drilled injection well and oil is produced through a horizontal production well parallel to the injection well.


6
Jan Bock, Patrick P McCall, Max L Robbins, Michael Siskin: In situ shale-oil recovery process. Exxon Research and Engineering Co, Henry E Naylor, July 10, 1984: US04458757 (249 worldwide citation)

Disclosed is a process for converting organic material of oil-shale to predominantly liquids. The oil-shale is first heated to a temperature from about 360.degree. C. to 475.degree. C. in an anionic atmosphere. The resulting liquids and gases are collected and the residue is extracted with a microem ...


7
Alfred R Jennings Jr: Disposal of produced formation fines during oil recovery. Mobil Oil Corporation, Alexander J McKillop, Michael G Gilman, Charles A Malone, November 29, 1988: US04787452 (244 worldwide citation)

Recovered formation fines are pumped in slurry form into an injection well during an enhanced oil recovery process e.g. a steam flood. Said injection can be done incrementally in stages in conjunction with said process. Said fines improve the sweep efficiency of the injected medium. This method is a ...


8
Dallas D Laumbach, Paul F Koci: Pressure-balanced oil recovery process for water productive oil shale. Shell Oil Company, April 10, 1979: US04148359 (227 worldwide citation)

In producing shale oil from a water-productive leached zone of a subterranean oil shale the reservoir pressure is counterbalanced to restrict water production. A generally vertical heated channel is formed by injecting steam into a lower location while producing fluid from an upper location until a ...


9
Billy G Holmes: Method for operating a production well in an oxygen driven in-situ combustion oil recovery process. Mobil Oil Corporation, Alexander J McKillop, Michael G Gilman, Charles J Speciale, July 8, 1986: US04598772 (209 worldwide citation)

A method for operating a production well during an oxygen driven in-situ combustion oil recovery process comprising continuously injecting an inert gas such as nitrogen or carbon dioxide into the bottom of the production well at a predetermined low injection rate, preferably 0.1 to 2 MSCF/day, and c ...


10
Russell D Shupe, Jim Maddox Jr: Surfactant oil recovery process usable in high temperature, high salinity formations. Texaco, Carl G Ries, Thomas H Whaley, Jack H Park, March 7, 1978: US04077471 (168 worldwide citation)

Many petroleum formations contain water having high salinity and/or high concentrations of divalent ions such as calcium or magnesium dissolved therein, and are additionally at temperature from about 70.degree. F. to about 300.degree. F. Most surfactants suitable for use in oil recovery operations a ...