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Scott Lee Wellington, Thomas Mikus, Harold J Vinegar, John Michael Karanikas: Flameless combustor. Shell Oil Company, Del S Christensen, January 26, 1999: US05862858 (290 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 ...


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Scott Lee Wellington, Thomas Mikus, Harold J Vinegar, John Michael Karanikas: Flameless combustor. Shell Oil Company, May 4, 1999: US05899269 (288 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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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 (287 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 ...


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Harold J Vinegar, Peter Veenstra, Steven Paul Giles, Chester L Sandberg, Frederick Henry Kreisler Rambow, Christopher Kelvin Harris, Lanny Gene Schoeling, Mark Gregory Picha, Etuan Zhang, Gary Beer, Fredrick Gordon Carl Jr, Taixu Bai, Dong Sub Kim, Michael David Fairbanks, Guillermo Pastor Sanz: Thermal processes for subsurface formations. Shell Oil Company, October 17, 2006: US07121342 (286 worldwide citation)

A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some hydrocarbons in a part of a subsu ...


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Cornelius F H Van Egmond: Heater utilizing copper-nickel alloy core. Shell Oil Company, October 22, 1991: US05060287 (285 worldwide citation)

An electrical resistance heater is provided which utilizes a copper-nickel alloy heating cable. This metallurgy heating cable is significantly less prone to failure due to localized overheating because the alloy has a low temperature coefficient of resistance. Used as a well heater, the heating cabl ...


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Carlos A Glandt: Method and apparatus for producing hydrocarbon bearing deposits in formations having shale layers. Shell Oil Company, September 10, 1991: US05046559 (285 worldwide citation)

An apparatus and method are disclosed for producing thick tar sand deposits by electrically preheating paths of increased injectivity between an injector and producers, wherein the injector and producers are arranged in a triangular pattern with the injector located at the apex and the producers loc ...


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Robert N Worrall, Wilhelmus C M Lohbeck, Paul R Choate, Martin Donnelly: Method of creating a wellbore in an underground formation. Shell Oil Company, September 20, 1994: US05348095 (284 worldwide citation)

A method of creating a wellbore in an underground formation is provided. A borehole is drilled in the underground formation, whereafter a casing of a ductile material is lowered into the borehole. The casing is selected to have a smaller elastic radial deformation than the surrounding formation when ...


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Harold J Vinegar, William P Rothwell: NMR imaging of materials. Shell Oil Company, March 1, 1988: US04728892 (284 worldwide citation)

NMR imaging methods are provided for determining the spatial petrophysical properties of materials. These methods employ the generation of separate M.sub.o, T.sub.1 and T.sub.2 images from which various petrophysical characteristics may be obtained, such as free fluid index, porosity, pore sizes and ...