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Coral L DePriester: Hull heating system for an arctic offshore production structure. Chevron Research Company, J A Buchanan Jr, R H Evans, June 22, 1982: US04335980 (37 worldwide citation)

A hull heating system for an offshore production structure for use in arctic waters wherein the heat from the produced fluids is used to maintain the temperature of the outer surface of the structure above the melting temperature of the ice adjacent the structure.


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Coral L DePriester: Non-abrasive particulate material for permeability alteration in subsurface formations. Chevron Research Company, Edward J Keeling, J A Buchanan Jr, February 26, 1985: US04501329 (13 worldwide citation)

An improved particulate material is disclosed for use in a method for altering the permeability of a gravity override or relatively high permeability path through a subsurface earth formation resulting from fluid injection into the subsurface formation. The method includes adding selectively sized, ...


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