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 (347 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
William A Edelstein, Harold J Vinegar, Chia Fu Hsu, Otward M Mueller: Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale. General Electric Company, Lawrence P Zale, Marvin Snyder, August 17, 1993: US05236039 (319 worldwide citation)

An in-situ method of extracting oil from a hydrocarbon bearing layer such as oil-shale or tar sands lying beneath a surface layer comprises applying a radiofrequency excitation signal to the hydrocarbon bearing layer through a system of electrodes. The electrodes are inserted into a matrix of holes ...


3
Harold J Vinegar, George L Stegemeier: Vacuum method for removing soil contamination utilizing surface electrical heating. Shell Oil Company, January 15, 1991: US04984594 (303 worldwide citation)

An in-situ method is disclosed for removing contaminants from surface and near-surface soil by imposing a vacuum on the soil beneath a impermeable flexible sheet and then heating the soil with an electric surface heater that is positioned on the soil surface under the sheet. The heater is permeable ...


4
Harold J Vinegar, Thomas Mikus, John Michael Karanikas, Scott Lee Wellington: Heater well method and apparatus. Shell Oil Company, May 2, 2000: US06056057 (301 worldwide citation)

A method and apparatus is disclosed for heating of formations using fired heaters. Each fired heater may consist of two concentric tubulars emplaced in the formation, connected via a wellhead to a burner at the surface. Combustion gases from the burner go down to the bottom of the inner tubular and ...


5
Eric Pierre de Rouffignac, Ilya Emil Berchenko, Thomas David Fowler, Robert Charles Ryan, Gordon Thomas Shahin Jr, George Leo Stegemeier, Harold J Vinegar, Scott Lee Wellington, Etuan Zhang: In situ thermal processing of a relatively impermeable formation to increase permeability of the formation. Shell Oil Company, August 31, 2004: US06782947 (294 worldwide citation)

A method for treating a relatively low permeability formation containing heavy hydrocarbons in situ may include providing heat from one or more heat sources to a portion of the formation. The heat may be allowed to transfer from the heat sources to a selected section of the formation. The transferre ...


6
Thomas Mikus, Scott Lee Wellington, John Michael Karanikas, Harold J Vinegar: Heater well method and apparatus. Shell Oil Company, Del S Christensen, June 27, 2000: US06079499 (293 worldwide citation)

A method and apparatus is disclosed for heating of formations using fired heaters. The method includes the steps of:


7
Harold J Vinegar, Eric De Rouffignac: Electrical heater. Shell Oil Company, Del S Christensen, February 8, 2000: US06023554 (291 worldwide citation)

A heater is disclosed, the heater comprising: a heating element effective to generate radiant energy; a casing surrounding the heating element separated from the heating element; and support material between the casing and the heating element wherein the support material comprises a granular solid m ...


8

9
Scott Lee Wellington, Thomas Mikus, Harold J Vinegar, John Michael Karanikas: Flameless combustor. Shell Oil Company, Del S Christensen, January 26, 1999: US05862858 (288 worldwide citation)

A combustor method and apparatus is provided. The method utilizes flameless combustion. The absence of a flame eliminates the flame as a radiant heat source and results in a more even temperature distribution throughout the length of the burner. Flameless combustion is accomplished by preheating the ...


10
Scott Lee Wellington, Thomas Mikus, Harold J Vinegar, John Michael Karanikas: Flameless combustor. Shell Oil Company, May 4, 1999: US05899269 (287 worldwide citation)

A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flameless combustion at least in the vicinity of th ...



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