METHOD OF USING HIGH MOLECULAR WEIGHT AROMATIC POLYOL DIESTERS AS DEMULSIFIERS FOR CRUDE OIL TREATMENT

A method of demulsifying crude oil, said method comprising the step of reacting an amount of crude oil with a polyester demulsifier, therein the demulsifier is used in quantities from 0.0001% to 5% (1 - 50,000 ppm), preferably 0.0005% to 2% (5 - 20,000 ppm), more preferably 0.0008% to 1% (8 - 10,000...

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Bibliographische Detailangaben
Hauptverfasser:	HOYLES, Stephen M, AYERS, Callie M, ALONSO, Thiago V
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of demulsifying crude oil, said method comprising the step of reacting an amount of crude oil with a polyester demulsifier, therein the demulsifier is used in quantities from 0.0001% to 5% (1 - 50,000 ppm), preferably 0.0005% to 2% (5 - 20,000 ppm), more preferably 0.0008% to 1% (8 - 10,000 ppm) and most preferably 0.001 to 0.1 wt. % polymer (10 - 1,000 ppm) related to the oil fraction of the utilized emulsion. L'invention concerne également un procédé de désémulsification de pétrole brut, ledit procédé comprenant l'étape consistant à faire réagir une quantité de pétrole brut avec un désémulsifiant de polyester, le désémulsifiant étant utilisé en quantités allant de 0,0001 % à 5 % (1-50 000 ppm), de préférence 0,0005 % à 2 % (5 à 20 000 ppm), de préférence 0,0008 % à 1 % (8-10 000 ppm) et idéalement de 0 001 à 0,1 % de polymère (10-1000 ppm) liée à la fraction huileuse de l'émulsion utilisée.