Use of multiple charged cationic compounds derived from polyamines for clay stabilization in oil and gas operations
Multiple charged cationic compounds, which are derived from polyamines through an aza-Michael addition with an α, β-unsaturated carbonyl compound, in a clay treatment composition to reduces clay swelling, clay migration, and sludge formation in a subterranean formation in oil and gas operations are provided. The disclosed methods or compositions are found to be more effective than those methods or compositions commonly used for reducing clay swelling, clay migration, and sludge formation.
1. A composition for stabilizing swellable clays in a subterranean formation comprising:
a compound or its salt derived from an aza-Michael Addition Reaction between a polyamine and an α, β-unsaturated carbonyl compound according to the following formula
and
one or more clay treatment composition agents comprising a flowback aid, additional clay stabilizer, crosslinker or a combination thereof,
wherein:
X is NH or O;
R 2 is H, CH 3 , or an unsubstituted, linear or branched C 2 -C 10 alkyl, alkenyl, or alkynyl group;
R 3 is absent or an unsubstituted, linear C 1 -C 30 alkylene group;
Y is —NR 4 R 5 R 6(+) or a salt thereof; and
wherein R 4 , R 5 , and R 6 are independently CH 3 or wherein R 4 and R 5 are independently CH 3 and R 6 is a C 2 -C 12 aromatic alkyl, or wherein R 4 and R 5 are independently CH 3 , and R 6 is —CH 2 —C 6 H 6 ;
wherein the compound is a multiple charged cationic compound having between 3 and 30 positive charges; and
wherein the treatment composition stabilizes swellable clays.
2. The composition of claim 1 , wherein the polyamine is a linear, branched, or dendrimer polyamine with a general formula of NH 2 —[R 10′ ] n —NH 2 , (RNH) n —RNH 2 , H 2 N—(RNH) n —RNH 2 , or H 2 N—(RN(R′)) n —RNH 2 , wherein R 10′ is a linear or branched, unsubstituted or substituted C 2 -C 10 alkylene group, or combination thereof; R is —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH 2 —, a linear or branched, unsubstituted or substituted C 4 -C 10 alkylene group, or combination thereof; R′ is —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH 2 —, a linear or branched, unsubstituted or substituted C 4 -C 10 alkyl group, RNH 2 , RNHRNH 2 , or RN(RNH 2 ) 2 ; and n can be from 2 to 1,000,000.
3. The composition of claim 1 , wherein the polyamine (A) is an ethoxylated polyamine, propylated polyamine, polyamine with polyquat, polyamine with polyglycerol, or combination thereof, (B) is a linear, branched, or dendrimer polyethyleneimine, (C) comprises only primary and secondary amine groups, (D) comprises only primary, secondary, and tertiary amine groups, and/or (E) comprises only primary and tertiary amine groups.
4. The composition of claim 1 , wherein the polyamine (A) has a general formula of NH 2 —[R 10′ ] n —NH 2 , wherein R 10′ is a linear or branched, unsubstituted or substituted C 2 -C 10 alkylene group, or combination thereof; (B) has a general formula of (RNH) n —RNH 2 or H 2 N—(RNH) n —RNH 2 , wherein R is —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH 2 —, a linear or branched, unsubstituted or substituted C 4 -C 10 alkylene group, or combination thereof; (C) has a general formula of H 2 N—(RN(R′)) n —RNH 2 , wherein R is —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH 2 —, a linear or branched, unsubstituted or substituted C 4 -C 10 alkylene group, or combination thereof and R′ is —CH 2 —, —CH 2 CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH 2 —, a linear or branched, unsubstituted or substituted C 4 -C 10 alkyl group, RNH 2 , RNHRNH 2 , or RN(RNH 2 ) 2 .
5. The composition of claim 1 , wherein the polyamine (A) is diamine or triamine having an average molecular weight (M w ) of from about 60 to about 1,300; or (B) has an average molecular weight of from about 60 to about 2,000,000 Da.
6. The composition of claim 1 , wherein X is NH or O and/or R 2 is H or CH 3 .
7. The composition of claim 1 , wherein the counter ion for Y is chloride, bromide, fluoride, iodide, acetate, aluminate, cyanate, cyanide, dihydrogen phosphate, dihydrogen phosphite, formate, hydrogen carbonate, hydrogen oxalate, hydrogen sulfate, hydroxide, nitrate, nitrite, thiocyanate, or a combination thereof.
8. The composition of claim 1 , wherein R 3 is CH 2 , CH 2 CH 2 —, —CH 2 CH 2 CH 2 — or —C(CH 3 ) 2 —, an unsubstituted, linear, and saturated C 1 -C 20 alkylene group, an unsubstituted, linear, and unsaturated C 1 -C 20 alkylene group, a linear C 8 -C 18 alkyl, alkenyl, or alkynyl group, or a branched C 8 -C 20 alkyl, alkenyl, or alkynyl group.
9. The composition of claim 1 , wherein the α, β-unsaturated carbonyl compound is (3-Acrylamidopropyl)trimethylammonium chloride (APTAC), [3-(methacryloylamino)propyl]trimethylammonium chloride (MAPTAC), 2-(acryloyloxy)-N,N,N-trimethylethanaminium chloride (DMAEA-MCQ), N,N-dimethylaminoethyl acrylate benzyl chloride quaternary salt (DMAEA-BCQ), or 2-(methacryloyloxy)-N,N,N-trimethylethan-1-aminium methyl sulfate (DMAEA-MSQ).
10. The composition of claim 1 , wherein the polyamine has an average molecular weight (M w ) of from about 60 to about 2,000,000 Da.
11. The composition of claim 1 , wherein the compound has an average molecular weight of from about 100 to about 2,000,000 Da and is (A) a single molecule, (B) a mixture of at least two multiple charged cationic compounds, or (C) a mixture of at least two multiple charged cationic compounds derived from the same polyamine and the α, β-unsaturated carbonyl compound, and wherein the product is (AA) a mixture of at least two multiple charged cationic compounds derived from different polyamines and the same α, β-unsaturated carbonyl compound, or (BB) a mixture of at least two multiple charged cationic compounds derived from different polyamines and different α, β-unsaturated carbonyl compounds.
12. The composition of claim 1 , wherein the compound has 4, 5, 6, 7, 8, 10, 15, or 20 positive charges.
13. The composition of claim 1 , wherein the compound is one or more of,
wherein n=0-1000,
14. The composition of claim 1 , wherein the compound is soluble in water.
15. The composition of claim 1 , further comprising a carrier that is water, an alcohol, an alkylene glycol, an alkyleneglycol alkyl ether, or a combination thereof, and/or one or more of additional functional ingredients that is a friction reducing agent, additional clay stabilizer, viscosifier, reverse emulsion breaker, coagulant/flocculant agent, biocide, corrosion inhibitor, antioxidant, polymer degradation prevention agent, permeability modifier, foaming agent, antifoaming agent, emulsifying agent, fracturing proppant, glass particulate, sand, fracture proppant/sand control agent, scavenger for H 2 S, CO 2 , and/or O 2 , gelling agent, lubricant, acid, salt thereof, or a mixture thereof.
16. The composition of claim 1 , comprising from about 40 wt-% to about 60 wt-% of the multiple charged cationic compound or its salt.