Cor F Vanegmond, Peter Van Meurs: Heater cable installation. Shell Oil Company, February 25, 1986: US04572299 (270 worldwide citation)

A well heater is installed in a well by spooling electrical cable assemblies for heating and supplying power, in proper sequence, on at least one spooling means, unspooling them and attaching them to a heat- and tension-stable support means as the resulting assembly is drawn into the well by a weigh ...


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 (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 ...


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 (268 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 ...

Beard Thomas N: Method of producing hydrocarbons from an oil shale formation. Shell Oil Company, September 18, 1973: US3759574 (268 worldwide citation)

A method of producing hydrocarbons and optionally water-soluble minerals from a subterranean oil shale formation containing zone(s) of water-soluble minerals, by penetrating said formation with at least one borehole and leaching or dissolving the water-soluble minerals from the formation with a solv ...


James J W Nahm, Harold J Vinegar, John M Karanikas, Reece E Wyant: High temperature wellbore cement slurry. Shell Oil Company, Del S Christensen, July 13, 1993: US05226961 (266 worldwide citation)

A cement slurry is provided which is useful to cement wellbores in high temperature service. A high alumina cement is used. The density of the slurry is relatively low as a result of using a low density aggregate. In a preferred embodiment, the low density aggregate is graphite. The graphite additio ...

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 (265 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 ...

Carlos A Glandt, Harold J Vinegar, Michael Prats: Method of producing tar sand deposits containing conductive layers. Shell Oil Company, May 22, 1990: US04926941 (264 worldwide citation)

A method is disclosed for producing thick tar sand deposits by preheating of thin, relatively conductive layers which are a small fraction of the total thickness of a tar sand deposit. The thin conductive layers serve to confine the heating within the tar sands to a thin zone adjacent to the conduct ...