Method for removing solids and water from petroleum crudes
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United States of America Patent
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Aug 21, 1984
Grant Date -
N/A
app pub date -
Jul 13, 1982
filing date -
Jul 13, 1982
priority date (Note) -
Expired
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Abstract
Particulate solids and water are removed from petroleum crude to bring the BS&W content of the crude within pipeline specifications by treating a blended and dewatered crude to destabilize the water-in-oil emulsion of the crude and providing in uniform distribution through the treated crude both produced water and an acid-reacting coagulating agent while maintaining the crude at a pH of at least 8, then maintaining the resulting treated crude at 52.degree.-88.degree. C. for at least a few minutes, separating the treated crude into at least an oil phase and a water phase, and recovering the oil phase as a clean blended crude oil having a BS&W content within pipeline specifications and in a yield significantly greater than that which can be recovered without use of produced water and coagulating agent.
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