Oil desalting by forming unstable water-in-oil emulsions
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United States of America Patent
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Sep 19, 2006
Grant Date -
Oct 9, 2003
app pub date -
Mar 18, 2003
filing date -
Apr 9, 2002
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Abstract
A method for determination for a given oil the relative stability of a water-in-oil emulsion that will be formed by that oil with water comprises measuring for the given oil the weight percent asphaltenes (A), total acid number (TAN), and ratio of the amount of naphthenic acids in the 450+ molecular weight to 450 molecular weight range (R); calculating an emulsion stability parameter, S=A+TAN*R; and determining whether the emulsion stability parameter, S, is greater than about 3; with a value above 3 being determinative of an emulsion more stable than one with a value less than 3.
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