Water-based resin with elasticity for applications in cementing and subterranean structures
This disclosure relates to compositions including a poly-alkene maleic anhydride copolymer, a PEG, and a crosslinker selected from an ethyleneamine, a benzenetricarboxylic acid, a benzimidazole, and combinations thereof. The poly-alkene maleic anhydride copolymer includes repeat units I and II: where R 1 , R 1′ , R 2 , and R 2′ are each independently selected from —H and —(C 1 -C 5 )alkyl. The disclosure also provides methods of treating a subterranean formation or cement construction using the compositions.
1. A liquid resin composition comprising:
a poly-alkene maleic anhydride copolymer comprising repeat units I and II:
wherein R 1 , R 1′ , R 2 , and R 2′ are each independently selected from —H or —(C 1 -C 5 )alkyl;
a polyethylene glycol (PEG) having a molecular weight of about 5000 Da to about 50,000 Da; and
a crosslinker selected from comprising an ethyleneamine, a benzenetricarboxylic acid, and a benzimidazole, or combinations thereof;
wherein the composition has a viscosity of about 2,000 mPa·s to about 7,500 mPa·s at 22° C.
2. The composition of claim 1 , wherein R 1 , R 1′ , R 2 , and R 2′ are each independently selected from —H or —CH 3 .
3. The composition of claim 2 , wherein one of R 1 and R 1′ is H and the other is —CH 3 ; and one of R 2 and R 2′ is H and the other is —CH 3 .
4. The composition of claim 2 , wherein R 1 and R 1′ are each H and R 2 and R 2′ are each independently selected from —H or —CH 3 .
5. The composition of claim 1 , wherein repeat unit I is selected from:
or combinations thereof.
6. The composition of claim 5 , wherein repeat unit I is
7. The composition of claim 5 , wherein repeat unit I is
8. The composition of claim 1 , wherein repeat units I and II alternate in the maleic anhydride copolymer.
9. The composition of claim 1 , wherein the polyethylene glycol has a molecular weight of about 10,000 Da to about 30,000 Da.
10. The composition of claim 9 , wherein the polyethylene glycol has a molecular weight of about 20,000 Da.
11. The composition of claim 1 , wherein the composition comprises about 20 wt % to about 40 wt % of the poly-alkene maleic anhydride copolymer and PEG.
12. The composition of claim 1 , wherein the composition comprises about 30 wt % of the poly-alkene maleic anhydride copolymer and PEG.
13. The composition of claim 1 , wherein the composition comprises about 20 wt % of the poly-alkene maleic anhydride copolymer and about 10 wt % PEG.
14. The composition of claim 1 , wherein the ethyleneamine is selected from ethylenediamine (EDA), diethylenetriamine (DETA), aminoethylpiperazine (AEP), triethylenetetraamine (linear-TETA), tris(2-aminoethyl)amine (branched-TETA), N,N′-bis-(2-aminoethyl)piperazine (bis-AEP), N-[(2-aminoethyl)2-aminoethyl]piperazine), piperazinoethylethylenediamine (PEEDA), tetraethylenepentamine (TEPA), or mixtures thereof.
15. The composition of claim 1 , wherein the ethyleneamine is TEPA.
16. The composition of claim 1 , wherein the benzenetricarboxylic acid is selected from 1,2,3-benzenetricarboxylic acid (hemimellitic acid), 1,2,4-benzenetricarboxylic acid (trimellitic acid), 1,3,5-benzenetricarboxylic acid (trimesic acid), and mixtures thereof.
17. The composition of claim 1 , wherein the benzenetricarboxylic acid is trimesic acid.
18. The composition of claim 1 , wherein the benzimidazole is a substituted phenylbenzimidazole.
19. The composition of claim 18 , wherein the phenylbenzimidazole is substituted with one or more of —OH, —OR, —NH 2 , —NHR, —NR 2 , —NHCOR, —SH, —SR, —SeR, —Cl, —Br, —I, —F, —CN, and —CO 2 R, and combinations thereof, wherein R is alkyl.
20. The composition of claim 1 , wherein the benzimidazole is 5-amino-2-(4-aminophenyl)benzimidazole (APBZ).
21. The composition of claim 1 , wherein the crosslinker comprises TEPA, trimesic acid, and APBZ.
22. The composition of claim 1 , wherein the composition comprises a pH adjuster.
23. The composition of claim 22 , wherein the pH adjuster is sodium hydroxide (NaOH).
24. The composition of claim 1 , wherein the pH of the composition is between about 12 to about 15.
25. The composition of claim 1 , wherein the composition comprises an aqueous carrier.
26. The composition of claim 1 , wherein the composition has a density greater than about 1.10 g/cm 3 and an elasticity of greater than about 2000 N/m.
27. A liquid resin composition comprising:
about 20 wt % to about 30 wt % of a poly-alkene maleic anhydride copolymer comprising:
repeat units I and II:
wherein repeat unit I is selected from:
or combinations thereof;
and
about 5 wt % to about 15 wt % of a polyethylene glycol (PEG) having a molecular weight of about 5000 Da to about 50,000 Da; and
a crosslinker comprising an ethyleneamine, a benzenetricarboxylic acid, and a benzimidazole,
wherein the pH of the composition is between about 12 to about 15; and
wherein the composition has a viscosity of about 2,000 mPa·s to about 7,500 mPa·s at 22° C.
28. The composition of claim 27 , wherein the crosslinker comprises TEPA, trimesic acid, and APBZ.
29. The composition of claim 27 , wherein the composition has a density of greater than about 1.10 g/cm 3 and an elasticity of greater than about 2000 N/m.