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1 Common conditions for heavy oils1987Heavy oils; Colloidal admixtures; Hydrocarbons; Asphaltenes; Trace metals; Organic residues; Alberta basin; Eastern Venezuela basin; Athabasca; Orinoco; Heavy-oil depositys; Common conditions for heavy oilsField evidence suggests that conditions for the collection and retention of various hydrocarbons exert control over the composition of resident hydrocarbon mixtures. Heavy-oil deposits demonstrate that control very clearly. Heavy oils are essentially colloidal admixtures of hydrocarbons, usually acc...
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