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US 2004/0167308 A1Published application
High molecular weight demulsifiers and a method of using the same
AssigneeBJ Services Company
InventorHarold Becker
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AssigneeBJ Services Company
InventorHarold Becker
Estimating the term…
Homopolymers and copolymers of an esterified reaction product of an epoxidized mono-hydroxyl alcohol and a free radical polymerizable monomer are highly effective demulsifying agents. The molecular weight of the polymer is between from about 10,000 to about 500,000. The epoxidized mono-hydroxyl alcohol is preferably a reaction product of a C6-C30 linear or branched alcohol and an alkylene oxide. The alkylene oxide is preferably either ethylene oxide, propylene oxide or butylenes oxide or a mixture thereof. The free radical polymerizable monomer is preferably a vinyl aromatic compound or an acrylic or methacrylic based monomer. The polymer preferably comprises a micellar assembly. Such polymers are highly effective in demulsifying crude oils having API gravities of from 8 to 28 or a crude oil having a viscosity between from about 3 to about 10,000 CPS @ at 25° C.
A homopolymer or copolymer of an epoxidized mono-hydroxyl alcohol and a free radical polymerizable monomer wherein the molecular weight of the homo- or copolymer is between from about 10,000 to about 500,000 Daltons.
A method of deemulsifying a crude oil having an API gravity of from 8 to 28 which comprises introducing to the crude oil a demulsifying effective amount of a homo- or copolymer of an esterified reaction product of:
A method of deemulsifying a crude oil having a viscosity between from about 3 to about 100 CPS @ 25° C. which comprises introducing to the crude oil a demulsifying effective amount of a homo- or copolymer of an esterified reaction product of
Dependencies are inferred from the claim text.