IP Library Granted Patent US 11,708,523
Granted Patent B2
US 11,708,523 · App. 17/524,449 · Granted Jul 25, 2023

Methods for stabilizing water sensitive clays and migrating fines in subterranean formations

Inventors: Aziz Hikem (Sealy, TX); Madhukar Chetty (Houston, TX); Derek Vaughn (Houston, TX); Prasad Taranekar (Houston, TX); Jeffery W. Balko (Annapolis, MD)
Assignee: PfP Industries LLC
C09K8/575C07C19/01C07C22/04C07C55/02C07C55/22C07C211/09C07C211/13C07D303/08C09K8/607C09K8/86C09K2208/12
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,708,523
App. No.
17/524,449
Granted
Jul 25, 2023
Kind
B2
Abstract

Clay stabilization compositions include one or a plurality of triamino compounds and/or derivatives thereof, fluids containing an effective amount of the clay stabilization compositions and methods for making and using same.

Claims (211)

1. A method comprising:

injecting, into a subterranean formation under fracturing conditions, one or more fracturing fluid compositions comprising:

a base fluid;

(a) one or more synthetic or natural hydratable polymers; (b) one or more synthetic or natural hydratable polymers and one or more crosslinking agents; or (c) one or more synthetic or natural hydratable polymers, one or more crosslinking agents, and one or more proppants; and

an effective amount of a clay stabilizing composition comprising:

one or more tri-functional primary amine compounds comprising one or more compounds of Formula I:

HC(RNR 1 R 2 )(R′NR 3 R 4 )(R″NR 5 R 6 )  (I); and

one or more salts comprising one or more compounds of Formula II:

HC(RN + R 1 R 2 R 7 )(R′N + R 3 R 4 R 8 )(R″N + R 5 R 6 R 9 )X n   (II),

wherein:

the R, R′, and R″ groups comprising the same or different hydrocarbyl linking groups including between 1 and 8 carbon atoms, and when the R, R′, and R″ groups including between 2 and 8 carbon atoms, then one or more carbon atoms may be replaced by acetate groups, or carbonyl groups, the R 1-6 groups comprising the same or different hydrogen atoms or hydrocarbyl groups including between 1 and 6 carbon atoms, and when the R 1-6 groups including between 2 and 6 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups, the R 7-9 groups are (a) absent and their associated nitrogen atoms do not bear a charge, (b) the same or different comprising a hydrogen atom and their associated nitrogen atoms bear a charge, or (c) the same or different comprising a hydrocarbyl group including between 1 and 24 carbon atoms and their associated nitrogen atoms bear a charge; provided that at least one of the R 7-9 groups comprising a hydrogen atom or a hydrocarbyl group, and when the R 7-9 groups including between 2 and 24 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups;

the X groups are the same or different counterions derived from an organic acid, an alkylating agent, a quaternizing agent, or mixtures thereof;

n is an integer having a value of 1, 2 or 3; provided that each of the compounds of Formula (II) is neutral;

the clay stabilizing composition stabilizes clay, reduces clay swelling, and reduces fines migration during fracturing.

2. The method of claim 1 , wherein, in the fracturing step:

the R, R′, and R″ groups comprising the same or different linear alkyl linking groups of the formula —(CH 2 ) m —;

m is an integer having a value between 1 and 8, when m has a value between 2 and 8, then one or more carbon atoms may be replaced by oxygen atoms;

the R group comprising a linear alkyl linking group having between 1 and 3 carbon atoms;

the R′ group comprising linear alkyl linking group having between 2 and 4 carbon atoms;

the R″ group comprising linear alkyl linking groups having between 3 and 5 carbon atoms.

3. The method of claim 1 , wherein, in the fracturing step:

the one or more compounds of Formula (I) comprising 3-aminomethyl-1,6-hexanediamine, 3-aminoethyl-1,6-hexanediamine, 3-aminomethyl-1,7-heptanediamine, 3-aminoethyl-1,7-heptanediamine, 3-aminopropyl-1,7-hexanediamine, 4-aminomethyl-1,8-octanediamine (triaminononane (TAN)), 4-aminoethyl-1,8-octanediamine, 4-aminopropyl-1,8-octanediamine, 4-aminomethyl-1,9-noanediamine, 4-aminoethyl-1,9-nonanediamine, 4-aminopropyl-1,9-nonanediamine, 4-aminomethyl-1,10-decanediamine, 4-aminoethyl-1,10-decanediamine, 4-aminopropyl-1,10-decanediamine, 4-aminobutyl-1,10-decanediamine, 3-dimethylaminomethyl-1,6-hexanedimethylamine, 3-dimethylaminoethyl-1,6-hexanedimethylamine, 3-dimethylaminomethyl-1,7-heptanedimethylamine, 3-dimethylaminoethyl-1,7-heptanedimethylamine, 3-dimethylaminopropyl-1,7-hexanedimethylamine, 4-dimethylaminomethyl-1,8-octanedimethylamine, 4-dimethylaminoethyl-1,8-octanedimethylamine, 4-dimethylaminopropyl-1,8-octanedimethylamine, 4-dimethylaminomethyl-1,9-noanedimethylamine, 4-dimethylaminoethyl-1,9-nonanedimethylamine, 4-dimethylaminopropyl-1,9-nonanedimethylamine, 4-dimethylaminomethyl-1,10-decanedimethylamine, 4-dimethylaminoethyl-1,10-decanedimethylamine, 4-dimethylaminopropyl-1,10-decanedimethylamine, 4-dimethylaminobutyl-1,10-decanedimethylamine, 3-diethylaminomethyl-1,6-hexanediethylamine, 3-diethylaminoethyl-1,6-hexanediethylamine, 3-diethylaminomethyl-1,7-heptanediethylamine, 3-diethylaminoethyl-1,7-heptanediethylamine, 3-diethylaminopropyl-1,7-hexanediethylamine, 4-diethylaminomethyl-1,8-octanediethylamine, 4-diethylaminoethyl-1,8-octanediethylamine, 4-diethylaminopropyl-1,8-octanediethylamine, 4-diethylaminomethyl-1,9-noanediethylamine, 4-diethylaminoethyl-1,9-nonanediethylamine, 4-diethylaminopropyl-1,9-nonanediethylamine, 4-diethylaminomethyl-1,10-decanediethylamine, 4-diethylaminoethyl-1,10-decanediethylamine, 4-diethylaminopropyl-1,10-decanediethylamine, 4-diethylaminobutyl-1,10-decanediethylamine, 3-methylethylaminomethyl-1,6-hexanemethylethylamine, 3-methylethylaminoethyl-1,6-hexanemethylethylamine, 3-methylethylaminomethyl-1,7-heptanemethylethylamine, 3-methylethylaminoethyl-1,7-heptanemethylethylamine, 3-methylethylaminopropyl-1,7-hexanemethylethylamine, 4-methylethylaminomethyl-1,8-octanemethylethylamine, 4-methylethylaminoethyl-1,8-octanemethylethylamine, 4-methylethylaminopropyl-1,8-octanemethylethylamine, 4-methylethylaminomethyl-1,9-noanemethylethylamine, 4-methylethylaminoethyl-1,9-nonanemethylethylamine, 4-methylethylaminopropyl-1,9-nonanemethylethylamine, 4-methylethylaminomethyl-1,10-decanemethylethylamine, 4-methylethylaminoethyl-1,10-decanemethylethylamine, 4-methylethylaminopropyl-1,10-decanemethylethylamine, 4-methylethylaminobutyl-1,10-decanemethylethylamine, quaternized derivatives thereof, or mixtures thereof;

the organic acids comprising formic acid, acetic acid, citric acid, lactic acid, fumaric acid, aminotris(methylenephosphonic acid) (ATMP), polyacrylic acid, p-toluene sulfonic acid, or mixtures thereof;

the alkylating agents comprising: (a) dialkylsulfates, wherein the alkyl groups are the same or different and have between 1 and 6 carbon atoms; (b) chloroalkylbenzenes, wherein the alkyl group has between 1 and 6 carbon atoms; (c) alkylchlorides, wherein the alkyl group has between 1 and 24 carbon atoms; (d) chloroethers having between 4 and 24 carbon atoms; (e) alkylsulfonates, wherein the alkyl group comprising a straight chain alkyl group, a branched alkyl group, or a cyclic alkyl group having between 1 to 24 carbon atoms; or (f) mixtures thereof;

the quaternizing agents comprising: (a) dialkylsulfates, wherein the alkyl groups are the same or different and have between 1 and 6 carbon atoms; (b) chloroalkylbenzenes, wherein the alkyl group has between 1 and 6 carbon atoms; (c) alkylchlorides, wherein the alkyl group has between 1 and 24 carbon atoms; (d) chloroethers having between 4 and 24 carbon atoms; (e) alkylsulfonates, wherein the alkyl group comprising a straight chain alkyl group, or branched alkyl group, or cyclic alkyl group has between 1 to 24 carbon atoms; or (f) mixtures thereof.

4. The method of claim 3 , wherein, in the fracturing step:

the dialkylsulfate compounds comprising dimethylsulfate, methylethylsulfate, diethylsulfate, dipropylsulfate, methylpropylsulfate, ethylpropylsulfate, and mixed dialkyl sulfates, or mixtures thereof;

the chloroalkylbenzenes comprising benzyl chloride, chloroxylene, chloroethylbenzene, chloropropylbenzene, chlorobutylbenzene, or mixtures thereof;

alkylchlorides include methyl chloride, ethyl chloride, propyl chloride, butyl chloride, pentyl chloride, hexyl chloride, heptyl chloride, octyl chloride, 1-chlorohexadecane, or mixtures thereof;

chloroethers comprising chloroethylethanolether, dichloroethylether, or mixtures thereof;

alkylsulfonates comprising methylsulfonate, ethane sulfonic acid, 1-butane sulfonic acid, petroleum sulfonic acids, benzenesulfonic acid, toluene sulfonic acid, dedecylbenzene sulfonic acid, or mixtures thereof.

5. The method of claim 1 , wherein, in the fracturing step;

the one or more compounds of Formula (I) comprising:

one or more compounds of Formula (III):

one or more compounds of Formula (V):

 or

mixtures thereof;

the one or more compounds of Formula (II) comprising:

one or more compounds of Formula (IV):

one or more compounds of Formula (VI):

one or more compounds of Formula (VII):

 or

mixtures thereof.

6. The method of claim 5 , wherein, in the fracturing step:

the one compound of Formula (I) comprising 4-aminomethyl-1,8-octanediamine (TAN);

the one or more salts of Formula (II) comprising:

TAN formate salts,

methylated TAN formate salts,

TAN acetate salts,

TAN fumarate salts,

TAN citrate salts,

TAN oxalate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN polyacrylate salts,

methylated TAN salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof;

the base fluid comprising:

aqueous base fluids comprising freshwater, production water, seawater, non-sodium brines, aqueous makeup systems, or mixture thereof; and

oil based fluids comprising synthetic hydrocarbon fluids, petroleum based hydrocarbon fluids, natural hydrocarbon fluids, or mixtures thereof.

7. The method of claim 6 , wherein, in the fracturing step:

the one or more salts of Formula (III) comprising:

TAN formate salts,

TAN fumarate salts,

TAN citrate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof.

8. The method of claim 7 , wherein, in the fracturing step:

the one or more salts of Formula (IV) comprising:

TAN formate salts,

TAN fumarate salts,

TAN citrate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof.

9. The method of claim 8 , wherein, in the fracturing step:

the one or more salts of Formula (V) comprising:

TAN formate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN diethyl sulfate quaternary salts, or

mixtures thereof.

10. A method comprising:

injecting, into a subterranean formation under fracturing conditions, one or more first fracturing fluid compositions comprising:

a first base fluid;

one or more first synthetic and/or natural hydratable polymers;

one or more first crosslinking agents; and

an effective amount of a clay stabilizing composition;

injecting, into a subterranean formation under fracturing conditions, one or more second fracturing fluid compositions comprising:

a second base fluid;

one or more second synthetic and/or natural hydratable polymers;

one or more second crosslinking agents;

one or more proppants; and

an effective amount of the clay stabilizing composition,

wherein:

the clay stabilizing composition comprising:

one or more tri-functional primary amine compounds comprising one or more compounds of Formula I:

HC(RNR 1 R 2 )(R′NR 3 R 4 )(R″NR 5 R 6 )  (I); and

one or more salts comprising one or more compounds of Formula II:

HC(RN + R 1 R 2 R 7 )(R′N + R 3 R 4 R 8 )(R″N + R 5 R 6 R 9 )X n   (II),

the R, R′, and R″ groups comprising the same or different hydrocarbyl linking groups including between 1 and 8 carbon atoms, and when the R, R′, and R″ groups including between 2 and 8 carbon atoms, then one or more carbon atoms may be replaced by acetate groups, or carbonyl groups,

the R 1-6 groups comprising the same or different hydrogen atoms or hydrocarbyl groups including between 1 and 6 carbon atoms, and when the R 1-6 groups including between 2 and 6 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups,

the R 7-9 groups are (a) absent and their associated nitrogen atoms do not bear a charge, (b) the same or different comprising a hydrogen atom and their associated nitrogen atoms bear a charge, or (c) the same or different comprising a hydrocarbyl group including between 1 and 24 carbon atoms and their associated nitrogen atoms bear a charge; provided that at least one of the R 7-9 groups comprising a hydrogen atom or a hydrocarbyl group, and when the R 7-9 groups including between 2 and 24 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups;

the X groups are the same or different counterions derived from an organic acid, an alkylating agent, a quaternizing agent, or mixtures thereof;

n is an integer having a value of 1, 2 or 3; provided that each of the compounds of Formula (II) is neutral;

the clay stabilizing composition stabilizes clay, reduces clay swelling, and reduces fines migration during fracturing.

11. The method of claim 10 , wherein, in the fracturing step:

the R, R′, and R″ groups comprising the same or different linear alkyl linking groups of the formula —(CH 2 ) m —;

m is an integer having a value between 1 and 8, when m has a value between 2 and 8, then one or more carbon atoms may be replaced by oxygen atoms;

the R group comprising a linear alkyl linking group having between 1 and 3 carbon atoms;

the R′ group comprising linear alkyl linking group having between 2 and 4 carbon atoms;

the R″ group comprising linear alkyl linking groups having between 3 and 5 carbon atoms.

12. The method of claim 10 , wherein, in the fracturing step:

the one or more compounds of Formula (I) comprising 3-aminomethyl-1,6-hexanediamine, 3-aminoethyl-1,6-hexanediamine, 3-aminomethyl-1,7-heptanediamine, 3-aminoethyl-1,7-heptanediamine, 3-aminopropyl-1,7-hexanediamine, 4-aminomethyl-1,8-octanediamine (triaminononane (TAN)), 4-aminoethyl-1,8-octanediamine, 4-aminopropyl-1,8-octanediamine, 4-aminomethyl-1,9-noanediamine, 4-aminoethyl-1,9-nonanediamine, 4-aminopropyl-1,9-nonanediamine, 4-aminomethyl-1,10-decanediamine, 4-aminoethyl-1,10-decanediamine, 4-aminopropyl-1,10-decanediamine, 4-aminobutyl-1,10-decanediamine, 3-dimethylaminomethyl-1,6-hexanedimethylamine, 3-dimethylaminoethyl-1,6-hexanedimethylamine, 3-dimethylaminomethyl-1,7-heptanedimethylamine, 3-dimethylaminoethyl-1,7-heptanedimethylamine, 3-dimethylaminopropyl-1,7-hexanedimethylamine, 4-dimethylaminomethyl-1,8-octanedimethylamine, 4-dimethylaminoethyl-1,8-octanedimethylamine, 4-dimethylaminopropyl-1,8-octanedimethylamine, 4-dimethylaminomethyl-1,9-noanedimethylamine, 4-dimethylaminoethyl-1,9-nonanedimethylamine, 4-dimethylaminopropyl-1,9-nonanedimethylamine, 4-dimethylaminomethyl-1,10-decanedimethylamine, 4-dimethylaminoethyl-1,10-decanedimethylamine, 4-dimethylaminopropyl-1,10-decanedimethylamine, 4-dimethylaminobutyl-1,10-decanedimethylamine, 3-diethylaminomethyl-1,6-hexanediethylamine, 3-diethylaminoethyl-1,6-hexanediethylamine, 3-diethylaminomethyl-1,7-heptanediethylamine, 3-diethylaminoethyl-1,7-heptanediethylamine, 3-diethylaminopropyl-1,7-hexanediethylamine, 4-diethylaminomethyl-1,8-octanediethylamine, 4-diethylaminoethyl-1,8-octanediethylamine, 4-diethylaminopropyl-1,8-octanediethylamine, 4-diethylaminomethyl-1,9-noanediethylamine, 4-diethylaminoethyl-1,9-nonanediethylamine, 4-diethylaminopropyl-1,9-nonanediethylamine, 4-diethylaminomethyl-1,10-decanediethylamine, 4-diethylaminoethyl-1,10-decanediethylamine, 4-diethylaminopropyl-1,10-decanediethylamine, 4-diethylaminobutyl-1,10-decanediethylamine, 3-methylethylaminomethyl-1,6-hexanemethylethylamine, 3-methylethylaminoethyl-1,6-hexanemethylethylamine, 3-methylethylaminomethyl-1,7-heptanemethylethylamine, 3-methylethylaminoethyl-1,7-heptanemethylethylamine, 3-methylethylaminopropyl-1,7-hexanemethylethylamine, 4-methylethylaminomethyl-1,8-octanemethylethylamine, 4-methylethylaminoethyl-1,8-octanemethylethylamine, 4-methylethylaminopropyl-1,8-octanemethylethylamine, 4-methylethylaminomethyl-1,9-noanemethylethylamine, 4-methylethylaminoethyl-1,9-nonanemethylethylamine, 4-methylethylaminopropyl-1,9-nonanemethylethylamine, 4-methylethylaminomethyl-1,10-decanemethylethylamine, 4-methylethylaminoethyl-1,10-decanemethylethylamine, 4-methylethylaminopropyl-1,10-decanemethylethylamine, 4-methylethylaminobutyl-1,10-decanemethylethylamine, quaternized derivatives thereof, or mixtures thereof;

the organic acids comprising formic acid, acetic acid, citric acid, lactic acid, fumaric acid, aminotris(methylenephosphonic acid) (ATMP), polyacrylic acid, p-toluene sulfonic acid, or mixtures thereof;

the alkylating agents comprising: (a) dialkylsulfates, wherein the alkyl groups are the same or different and have between 1 and 6 carbon atoms; (b) chloroalkylbenzenes, wherein the alkyl group has between 1 and 6 carbon atoms; (c) alkylchlorides, wherein the alkyl group has between 1 and 24 carbon atoms; (d) chloroethers having between 4 and 24 carbon atoms; (e) alkylsulfonates, wherein the alkyl group comprising a straight chain alkyl group, a branched alkyl group, or a cyclic alkyl group having between 1 to 24 carbon atoms; or (f) mixtures thereof;

the quaternizing agents comprising: (a) dialkylsulfates, wherein the alkyl groups are the same or different and have between 1 and 6 carbon atoms; (b) chloroalkylbenzenes, wherein the alkyl group has between 1 and 6 carbon atoms; (c) alkylchlorides, wherein the alkyl group has between 1 and 24 carbon atoms; (d) chloroethers having between 4 and 24 carbon atoms; (e) alkylsulfonates, wherein the alkyl group comprising a straight chain alkyl group, or branched alkyl group, or cyclic alkyl group has between 1 to 24 carbon atoms; or (f) mixtures thereof.

13. The method of claim 12 , wherein, in the fracturing step:

the dialkylsulfate compounds comprising dimethylsulfate, methylethylsulfate, diethylsulfate, dipropylsulfate, methylpropylsulfate, ethylpropylsulfate, higher dialkyl sulfates and mixed dialkyl sulfates, or mixtures thereof;

the chloroalkylbenzenes comprising benzyl chloride, chloroxylene, chloroethylbenzene, chloropropylbenzene, chlorobutylbenzene, or mixtures thereof;

alkylchlorides include methyl chloride, ethyl chloride, propyl chloride, butyl chloride, pentyl chloride, hexyl chloride, heptyl chloride, octyl chloride, 1-chlorohexadecane, or mixtures thereof;

chloroethers comprising chloroethylethanolether, dichloroethylether, or mixtures thereof;

alkylsulfonates comprising methylsulfonate, ethane sulfonic acid, 1-butane sulfonic acid, petroleum sulfonic acids, benzenesulfonic acid, toluene sulfonic acid, dedecylbenzene sulfonic acid, or mixtures thereof.

14. The method of claim 13 , wherein, in the fracturing step;

the one or more compounds of Formula (I) comprising:

one or more compounds of Formula (III):

one or more compounds of Formula (V):

mixtures thereof;

the one or more compounds of Formula (II) comprising:

one or more compounds of Formula (IV):

one or more compounds of Formula (VI):

one or more compounds of Formula (VII):

 or

mixtures thereof.

15. The method of claim 14 , wherein, in the fracturing step:

the one compound of Formula (I) comprising 4-aminomethyl-1,8-octanediamine (TAN);

the one or more salts of Formula (II) comprising:

TAN formate salts,

methylated TAN formate salts,

TAN acetate salts,

TAN fumarate salts,

TAN citrate salts,

TAN oxalate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN polyacrylate salts,

methylated TAN salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof;

the base fluid comprising:

aqueous base fluids comprising freshwater, production water, seawater, non-sodium brines, aqueous makeup systems, or mixture thereof; and

oil based fluids comprising synthetic hydrocarbon fluids, petroleum based hydrocarbon fluids, natural hydrocarbon fluids, or mixtures thereof.

16. The method of claim 15 , wherein, in the fracturing step:

the one or more salts of Formula (III) comprising:

TAN formate salts,

TAN fumarate salts,

TAN citrate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof.

17. The method of claim 16 , wherein, in the fracturing step:

the one or more salts of Formula (IV) comprising:

TAN formate salts,

TAN fumarate salts,

TAN citrate salts,

TAN p-toluene sulfonate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN benzyl quaternary salts,

TAN (±) epichlorohydrine quaternary salts,

TAN chloroethylether quaternary salts,

TAN diethyl sulfate quaternary salts,

TAN (±) epichlorohydrin salts, or

mixtures thereof.

18. The method of claim 17 , wherein, in the fracturing step:

the one or more salts of Formula (V) comprising:

TAN formate salts,

TAN methane sulfonate salts,

TAN aminotris(methylenephosphonic acid) salts,

TAN diethyl sulfate quaternary salts, or

mixtures thereof.

Assignments (5)
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2025
From: WILMINGTON SAVINGS FUND SOCIETY, FSB
To: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Reel/Frame 074050/0090 →
SECURITY INTEREST Recorded Dec 23, 2025
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WILMINGTON SAVINGS FUND SOCIETY, FSB
Reel/Frame 074056/0183 →
SECURITY INTEREST Recorded Dec 19, 2025
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 074007/0183 →
SECURITY INTEREST Recorded Apr 10, 2025
From: BANK OF AMERICA, N.A.
To: WILMINGTON SAVINGS FUND SOCIETY, FSB
Reel/Frame 070811/0705 →
SECURITY INTEREST Recorded Dec 8, 2022
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WELLS FARGO CAPITAL FINANCE, LLC
Reel/Frame 062094/0172 →