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Harold J Vinegar, Eric Pierre de Rouffignac, Scott Lee Wellington, Robert Martijn Van Hardeveld: In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor. Shell Oil Company, October 3, 2006: US07114566 (226 worldwide citation)

An in situ process for treating a hydrocarbon containing formation is provided. The process may include providing heat from one or more heat sources to at least a portion of the formation. Heat sources may include a natural distributed combustor. The natural distributed combustor may include an oxid ...


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Harold J Vinegar, Scott Lee Wellington, Ilya Emil Berchenko, Robert Martijn Van Hardeveld: In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio. Shell Oil Company, April 19, 2005: US06880635 (203 worldwide citation)

A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. A portion of a form ...