Compositions and processes for treating subterranean formations

A process comprising introducing into a subterranean information a water-soluble polymer comprising repeat units derived from at least one nitrogen-containing olefinic monomer and at least one olefinic comonomer wherein said nitrogen-containing olefinic monomer has a formula selected from the group consisting of ##STR13## and combinations of any two or more thereof and said olefinic comonomer has the formula selected from the group consisting of R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--W, R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--(C.dbd.O).sub.m --Z, R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--Y--W, R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--(C.dbd.O).sub.m --N(R.sub.2)--Y--R.sub.2, R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--(C.dbd.O).sub.m --G--Y--Z, R.sub.1 C(R.sub.1).dbd.C(R.sub.1)--(C.dbd.O).sub.m --G--Y--W, R.sub.1 --C(R.sub.1).dbd.C(R.sub.1)--(C.dbd.O).sub.m --Y--Z wherein

• R.sub.1 and R.sub.2 are each independently selected from the group consisting of hydrogen, alkyl radical, aryl radical, aralkyl radical, alkaryl radical, and combinations of any two or more thereof wherein each radical contains 1 to about 30 carbon atoms;
• M is a substituted or unsubstituted morpholine group;
• each Y is independently selected from the group consisting of alkylene radical, phenylene group, imidazolium group, naphthylene group, biphenylene group, and combinations of any two or more thereof;
• Ar is an arylene group;
• G is N(R.sub.1) or O;
• Z has the formula selected from the group consisting of N(R.sub.2)(R.sub.2), N.sup.+ (R.sub.2)(R.sub.2)(R.sub.2)X.sup.-, and combinations of any two or more thereof;
• X is an anion selected from the group consisting of halide, sulfate, phosphate, nitrate, sulfonate, phosphonates, sulfinate, phosphinate, and combinations of any two or more thereof;
• each m is independently 0 or 1;
• and
• W is an acid moiety selected from the group consisting of phosphinic acid, phosphonic acid, sulfinic acid, sulfonic acid, sulfuric acid, sulfurous acid, carboxylic acid, phosphoric acid, ammonium salt or alkali metal salt of any of these acids, and combinations of any two or more thereof.

A process comprising introducing into a subterranean formation a water-soluble polymer comprising repeat units derived from at least one nitrogen-containing olefinic monomer and at least one olefinic comonomer wherein

• said nitrogen-containing olefinic monomer has a formula selected from the group consisting of N-acryloyl morpholine, N-acryloyl-N'-methyl piperazine, N-acryloyl-N'-ethyl piperazine, N-acryloyl-N'-propyl piperazine, N-acryloyl-N'-(3-sulfopropyl)-N'-methyl piperazinium inner salt, N-acryloyl-N'-(3-sulfopropyl)-N'-ethyl piperazinium inner salt, N-acryloyl-N'-(4-sulfopropyl)-N'-methyl piperazinium inner salt, N-acryloyl-N'-(4-sulfopropyl)-N'-ethyl piperazinium inner salt, N-acryloyl-N'-(2-amino-2-oxoethyl)-N'-methyl piperazinium chloride, N-acryloyl-N'-(3-amino-3-oxopropyl)-N'-methyl piperazinium chloride, N-acryloyl-N'-(4-amino-4-oxobutyl)-N'-methyl piperazinium chloride, N-acryloyl-N'-(2-amino-2-oxoethyl)-N'-ethyl piperazinium chloride, N-acryloyl-N'-(3-amino-3-oxopropyl)-N'-ethyl piperazinium chloride, N-acryloyl-N'-(4-amino-4-oxobutyl)-N'-ethyl piperazinium chloride, N,N-dimethyl-N-(3-sulfopropyl)-N-(4-vinylbenzyl) ammonium inner salt, N,N-dimethyl-N-(4-sulfobutyl)-N-(4-vinylbenzyl) ammonium inner salt, N,N-diethyl-N-(3-sulfopropyl)-N-(4-vinylbenzyl) ammonium inner salt, N,N-diethyl-N-(4-sulfobutyl)-N-(4-vinylbenzyl) ammonium inner salt, N,N-dimethyl-N-(3-sulfopropyl)-N-(3-vinylbenzyl) ammonium inner salt, N,N-dimethyl-N-(4-sulfobutyl)-N-(3-vinylbenzyl) ammonium inner salt, N,N-diethyl-N-(3-sulfopropyl)-N-(3-vinylbenzyl) ammonium inner salt, N,N-diethyl-N-(4-sulfobutyl)-N-(3-vinylbenzyl) ammonium inner salt, N,N-dimethyl-N-(2-amino-2-oxoethyl)-N-(4-vinylbenzyl) ammonium chloride, N,N-diethyl-N-(2-amino-2-oxoethyl)-N-(4-vinylbenzyl) ammonium chloride, N,N-dimethyl-N-(3-amino-3-oxopropyl)-N-(4-vinylbenzyl) ammonium chloride, N,N-diethyl-N-(3-amino-3-oxopropyl)-N-(4-vinylbenzyl) ammonium chloride, N,N-dimethyl-N-(2-amino-2-oxoethyl)-N-(3-vinylbenzyl) ammonium chloride, N,N-diethyl-N-(2-amino-2-oxoethyl)-N-(3-vinylbenzyl) ammonium chloride, N,N-dimethyl-N-(3-amino-3-oxopropyl)-N-(3-vinylbenzyl) ammonium chloride, N,N-diethyl-N-(3-amino-3-oxopropyl)-N-(3-vinylbenzyl) ammonium chloride, N-(2-amino-2-oxoethyl)-N'-vinyl imidazolium chloride, N-(3-amino-3-oxopropyl)-N'-vinyl imidazolium chloride, N-(4-amino-4-oxobutyl)-N'-vinyl imidazolium chloride, N,N-dimethyl-N-(3-sulfopropyl)-3-(acryloyl amino)-1-propaneammonium inner salt, N,N-diethyl-N-(3-sulfopropyl)-3-(acryloyl amino)-1-propaneammonium inner salt, N,N-dimethyl-N-(4-sulfobutyl)-3-(acryloyl amino)-1-propaneammonium inner salt, N,N-diethyl-N-(4-sulfobutyl)-3-(acryloyl amino)-1-propaneammonium inner salt, N,N-dimethyl-N-(3-sulfopropyl)-2-(acryloyl amino)-1-ethaneammonium inner salt, N,N-diethyl-N-(3-sulfopropyl)-2-(acryloyl amino)-1-ethaneammonium inner salt, N,N-dimethyl-N-(4-sulfobutyl)-2-(acryloyl amino)-1-ethaneammonium inner salt, N,N-diethyl-N-(4-sulfobutyl)-2-(acryloyl amino)-1-ethaneammonium inner salt, and combinations of any two or more thereof;
• and
• said olefinic comonomer is selected from the group consisting of acrylamide, styrene sulfonic acid, salt of styrene sulfonic acid, N-methylacrylamide, N,N-dimethylacrylamide, acrylic acid, salt of acrylic acid, N-vinylpyrrolidone, methyl acrylate, methacrylate, vinylic sulfonic acid, salt of vinylic sulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, salt 2-acrylamido-2-methylpropanesulfonic acid, and combinations of any two or more thereof.