1
Peter Van Meurs, Eric P De Rouffignac, Harold J Vinegar, Michael F Lucid: Conductively heating a subterranean oil shale to create permeability and subsequently produce oil. Shell Oil Company, December 12, 1989: US04886118 (350 worldwide citation)

Shale oil is produced from a subterranean interval of oil shale, where the interval is initially substantially impermeable and contains a specified grade and thickness of oil shale. Said interval is conductively heated from borehole interiors which are kept hotter than about 600.degree. C. and are h ...


2
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 (281 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 ...


3
Harold J Vinegar, George L Stegemeier, Eric P de Rouffignac, Charles C Chou: Vacuum method for removing soil contaminants utilizing thermal conduction heating. Shell Oil Company, June 7, 1994: US05318116 (269 worldwide citation)

An in situ method for removal of contaminants from soil imposes a vacuum on the soil through perforated heater wells that are positioned in the soil. The heater wells heat the soil to elevated temperatures by thermal conduction. The heater wells are permeable to vapors which emanate from the soil wh ...


4
Harold J Vinegar, George L Stegmeier, Eric P de Rouffignac, Charles C Chou: Vacuum method for removing soil contaminants utilizing thermal conduction heating. Shell Oil Company, March 2, 1993: US05190405 (267 worldwide citation)

An in situ method for removal of contaminants from soil imposes a vacuum on the soil through perforated heater wells that are positioned in the soil. The heater wells heat the soil to elevated temperatures by thermal conduction. The heater wells are permeable to vapors which emanate from the soil wh ...


5
Harold J Vinegar, Thomas Mikus, Carlos A Glandt, John M Karanikas, Eric P De Rouffignac: Heat injection process and apparatus. Shell Oil Company, Del S Christensen, April 11, 1995: US05404952 (267 worldwide citation)

A method for heat injection into a subterranean formation is provided. The method utilizes flameless combustion and a gas fired heater having an electrical heated surface for ignition of the gas. The absence of a flame eliminates the flame as a radiant heat source and results in a more even temperat ...


6
Harold J Vinegar, Eric P De Rouffignac, Lawrence J Bielamowicz, Phillip T Baxley, Scott L Wellington: Heat injection process. Shell Oil Company, Del S Christensen, May 2, 1995: US05411089 (260 worldwide citation)

A method for heat injection into a subterranean diatomite formation is provided. A heater is placed in a wellbore within the diatomite formation, and the heater is then operated at a temperature above that which the heater could be operated at long term in order to better sinter the formation in the ...


7
Harold J Vinegar, Ilya Emil Berchenko, Eric P de Rouffignac, Thomas David Fowler, Robert Charles Ryan, Scott Lee Wellington, Etuan Zhang: In situ thermal processing of an oil reservoir formation. Shell Oil Company, July 18, 2006: US07077199 (248 worldwide citation)

An in situ process for treating an oil containing formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or ...


8
Harold J Vinegar, Eric P De Rouffignac, Lawrence J Bielamowicz, Phillip T Baxley: Heat injection process. Shell Oil Company, Del S Christensen, July 18, 1995: US05433271 (247 worldwide citation)

A method for heat injection into a subterranean diatomite formation is provided. The method utilizes a heater that is placed directly in the diatomite formation without cement around the heater. Diatomite is very soft, and will quickly fill in around the heater, operation of the heater will sinter t ...


9
Frederick G Carl Jr, Eric P de Rouffignac: Current to power crossover heater control. Shell Oil Company, Del S Christensen, February 23, 1993: US05189283 (247 worldwide citation)

A control system which minimizes the start up time of heaters and sustains long term automatic control is provided. This control system automatically converts control time constant current to constant power when the power reaches the power set and provides that after power interruptions, control wil ...


10
George L Stegemeier, Harold J Vinegar, Eric P de Rouffignac: Thermally enhanced soil decontamination method. Board of Regents The University of Texas System, Meyertons Hood Kivlin Kowert & Goetzel P C, Eric B Meyertons, October 4, 2005: US06951436 (6 worldwide citation)

A method is provided to remove contaminants from contaminated soil. The method may include withdrawing vapors from a vapor extraction well, estimating the amount of water vapor removed from the contaminated soil in the vapors being withdrawn from the vapor extraction well, and applying heat to the c ...



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