Patent ID: 8349772
Filing Date: 2013-01-08
Classification: C09K

Abstract:
1. A method of secondary oil recovery comprising the step of injecting into the reservoir system of from 0.1 ppm to 100 000 ppm of an aminoalkylene phosphonic acid selected from the group consisting of: ethylene diamine tetramethylene phosphonic acid; diethylenetriamine pentamethylene phosphonic acid; 1,3-propane diamine-N,N′-bis2-aminoethylhexamethylene phosphonic acid; L-lysine-N,N,N′,N′-tetramethylene phosphonic acid; L-alanine-N,N-dimethylene phosphonic acid; propyl imino bismethylene phosphonic acid substituted polyethylene imine; ethyl imino bismethylene phosphonic acid substituted polyethylene imine; glycine N,N-bispropyl imino bismethylene phosphonic acid; glycine N,N-bisethyl imino bismethylene phosphonic acid; alanine N,N-bispropyl imino bismethylene phosphonic acid; alanine N,N-bisethyl imino bismethylene phosphonic acid; β-alanine N,N-bispropyl imino bismethylene phosphonic acid; β-alanine N,N-bisethyl imino bismethylene phosphonic acid; glutamic acid N,N-bispropyl imino bismethylene phosphonic acid; glutamic acid N,N-bisethyl imino bismethylene phosphonic acid; 4-aminomethyl 1,8-octane diamino hexamethylene phosphonic acid; 6-amino hexanoic acid N,N-bispropyl imino bismethylene phosophonic acid; 6-amino hexanoic acid N,N-bisethyl imino bismethylene phosophonic acid; 9-amino nonanoic acid N,N-bispropyl imino bismethylene phosphonic acid; 9-amino nonanoic acid N,N-bisethyl imino bismethylene phosphonic acid; 11-amino undecanoic acid N,N-bispropyl imino bismethylene phosphonic acid; 11-amino undecanoic acid N,N-bisethyl imino bismethylene phosphonic acid; polyvinylamino N,N-bispropyl imino bismethylene phosphonic acid; polyvinylamino N,N-bisethyl imino bismethylene phosphonic acid; 12-amino dodecanoic acid N,N-bispropyl imino bismethylene phosphonic acid; 12-amino dodecanoic acid N,N-bisethyl imino bismethylene phosphonic acid; polyvinylamino bismethylene phosphonic acid, 4-amino butanoic acid N,N-bispropyl imino bismethylene phosphonic acid; 4-amino butanoic acid N,N-bisethyl imino bismethylene phosphonic acid; methionine N,N-bispropyl imino bismethylene phosphonic acid; methionine N,N-bisethyl imino bismethylene phosphonic acid; L-lysine N,N,N′,N′-tetra-propyl imino bismethylene phosphonic acid; L-lysine N,N,N′,N′-tetra-ethyl imino bismethylene phosphonic acid; aspartic acid N,N-bispropyl imino bismethylene phosphonic acid; aspartic acid N,N-bisethyl imino bismethylene phosphonic acid; phenylalanine N,N-bispropyl imino bismethylene phosphonic acid; phenylalanine N,N-bisethyl imino bismethylene phosphonic acid; threonine N,N-bispropyl imino bismethylene phosphonic acid; threonine N,N-bisethyl imino bismethylene phosphonic acid; 2-ethanol amine N,N-bispropyl imino bismethylene phosphonic acid; 2-ethanol amine N,N-bisethyl imino bismethylene phosphonic acid; 6-hexanol amine N,N-bispropyl imino bismethylene phosphonic acid; 6-hexanol amine N,N-bisethyl imino bismethylene phosphonic acid; 4-butanol amine N,N-bispropyl imino bismethylene phosphonic acid; 4-butanol amine N,N-bisethyl imino bismethylene phosphonic acid; di2-ethanolaminepropyl imino bismethylene phosphonic acid; di2-ethanolamineethyl imino bismethylene phosphonic acid; dipropanol aminepropyl imino bismethylene phosphonic acid; dipropanol amineethyl imino bismethylene phosphonic acid; 2-2-aminoethoxyethanol bispropyl imino bismethylene phosphonic acid; 2-2-aminoethoxyethanol bisethyl imino bismethylene phosphonic acid; 3-propanol amine bispropyl imino bismethylene phosphonic acid; 3-propanol amine bisethyl imino bismethylene phosphonic acid; toluene diamine tetrapropyl imino bismethylene phosphonic acid; toluene diamine tetraethyl imino bismethylene phosphonic acid; 1,6-hexamethylene diamine tetrapropyl imino bismethylene phosphonic acid; 1,6-hexamethylene diamine tetraethyl imino bismethylene phosphonic acid; 1,4-butane diamine tetrapropyl imino bismethylene phosphonic acid; 1,4-butane diamine tetraethyl imino bismethylene phosphonic acid; 1,2-ethylene diamine tetrapropyl imino bismethylene phosphonic acid; 1,2-ethylene diamine tetraethyl imino bismethylene phosphonic acid; linear or branched polyethylene imine polypropyl imino bismethylene phosphonic acid; linear or branched polyethylene imine polyethyl imino bismethylene phosphonic acid; methyl or ethyl or propyl or butyl or hexyl or heptyl or octyl or nonyl or decyl or dodecyl amine bispropyl imino bismethylene phosphonic acid; methyl or ethyl or propyl or butyl or hexyl or heptyl or octyl or nonyl or decyl or dodecyl amine bisethyl imino bismethylene phosphonic acid; aniline bispropyl imino bismethylene phosphonic acid; aniline bisethyl imino bismethylene phosphonic acid; C wherein X is selected from the group consisting of C