Additives for oil recovery from reservoirs

Details Additives for oil recovery from reservoirs Additives for oil recovery from reservoirs

C - Chemistry, Metallurgy

09

K

C09K 8/58 (2006.01) C09K 8/60 (2006.01) C09K 8/86 (2006.01) C09K 8/88 (2006.01)

Patent

CA 2684073

The invention relates to the use of quaternary polyamines having formula (I) for the recovery of oil from reservoirs formula (I), wherein n > = 1 R1 represents H, CH3, CH2CH3, CnH2n+I R2 represents H2CHOHCH2, CH2, CH2CH=CH2 R3 represents CH3, CH2CH3, CnH2n+1 R4 represents CH2, CH2CH=CH2 when R2 and R4 are allyl group, they can j ointly form aliphatic cyclic structures, the ratio between the carbon atoms and nitrogen atoms (C/N) ranges f rom 2 to 30.

Cette invention se rapporte à l'utilisation de polyamines quaternaires de formule (I) pour récupérer des huiles à partir de réservoirs. Formule (I) : dans laquelle n > = 1, R1 représente H, CH3, CH2CH3, CnH2n+I, R2 représente H2CHOHCH2, CH2, CH2CH=CH2, R3 représente CH3, CH2CH3, CnH2n+1, R4 représente CH2, CH2CH=CH2 lorsque R2 et R4 sont un groupe allyle, peuvent former conjointement des structures cycliques aliphatiques, le rapport entre les atomes de carbone et les atomes d'azote (C/N) va de 2 à 30.

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