Method for improving production of viscous crude oil

Details Method for improving production of viscous crude oil Method for improving production of viscous crude oil

C - Chemistry, Metallurgy

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C09K 3/00 (2006.01) B01F 17/12 (2006.01) C09K 8/584 (2006.01) C10L 1/14 (2006.01) C10L 1/18 (2006.01) C10L 1/198 (2006.01) F15D 1/06 (2006.01)

Patent

CA 1268936

METHOD FOR IMPROVING PRODUCTION OF VISCOUS CRUDE OIL Abstract A method for improving the mobility and pipeline transport of a viscous crude oil by forming an oil-in- water emulsion with said oil and from 20 to 80% by weight of water in the presence of 170 to 4000 parts by weight per million parts by weight of oil of a surfac- tant blend, said blend comprising from 30 to 70 parts by weight of an anionic or amphoteric surfactant (A) selected from those of the formulae Ar(OCH2CH2)nOSO3H, Ar(OCH2CH2)nOCH2COOH, R1(OCH2CH2)nOCH2COOH, Image a sodium and ammonium salt thereof, and from 30 to 70 parts by weight of a nonionic surfactant selected from (B) of the formula Ar(OCH2CH2)pOH or (C) of the formula Image , the latter having an HLB value of from 10 to 20; where Ar is octylphenyl or nonylphenyl, n is 2 to 10, p is 10 to 100, m is 20 to 40, the sum of r and s is 20 to 50, R1 is C8 to C18 alkyl and R2 is C12 to C18 alkyl; and said emulsion.

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