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US 5,627,144 AGranted
Composition for enhanced crude oil recovery operations containing hydrochloric acid or hydrofluoric acid, or mixtures thereof with ester quaternary ammonium compounds or/and alkyl quaternary ammonium compounds
AssigneesHenkel Kommanditgesellschaft auf Aktien, Pulcra S.A., Henkel Corporation
InventorsAllen D. Urfer, Oriol P. Obiols, Nuria Bonastre
Life of this patent
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Abstract
Detergent compositions comprised of an alkyl polyglycoside and an ester quat corresponding to formula (II) ##STR1## wherein R.sup.2 CO is an aliphatic acyl radical containing 12 to 22 carbon atoms and 0, 1, 2 or 3 double bonds, n=2 or 3 and X stands for halide, methosulfate or methophosphate ion are provided which are useful for the production of surface-active agents and for the enhanced recovery of crude oil.
Claims13
A composition for enhanced crude oil recovery comprised of:
- (a) a compound of the formula I
- R.sup.1 --O--(G).sub.p (I)
- wherein R.sup.1 is an alkyl or alkenyl group having from 1 to 22 carbon atoms, (G) is a sugar residue having 5 or 6 carbon atoms and p is a number of 1 to 10;
- (b) aqueous HCl or HF or a combination thereof;
- and
- (c) at least one quaternary ammonium compound selected from the group consisting of
- (i) an ester quat of the formula (II) ##STR3## wherein R.sup.2 CO is an aliphatic acyl radical containing 12 to 22 carbon atoms and 3 double bonds or less, n=2 or 3, and X is halide, methosulfate or methophosphate ion;
- and
- (ii) a quaternary ammonium compound of the formula (III)
- R.sub.2 R.sub.3 R.sub.4 R.sub.5 NX (III)
- wherein R.sub.2 is a C.sub.6-22 alkyl group, and each of R.sub.3, R.sub.4, and R.sub.5 is independently an alkyl group having from about 1 to about 22 carbon atoms and X is a halide ion or a sulfate ion;
- wherein the ratio by weight of component (a) to component (c) is from about 50:1 to about 1:5.
9 more elements
Dependencies are inferred from the claim text.