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US 12,378,463 B2Granted
Water-based resin with elasticity for applications in cementing and subterranean structures
AssigneeSaudi Arabian Oil Company
InventorElizabeth Contreras
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Abstract
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 R1, R1′, R2, and R2′ are each independently selected from —H and —(C1-C5)alkyl. The disclosure also provides methods of treating a subterranean formation or cement construction using the compositions.
Claims21
A method of treating a subterranean formation or cement construction comprising:
- providing to the subterranean formation or cement construction a liquid resin composition comprising:
- a poly-alkene maleic anhydride copolymer comprising:
- repeat units I and II:
- wherein R1, R1′, R2, and R2′ are each independently selected from —H and —(C1-C5)alkyl;
- 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 liquid resin composition has a viscosity of about 2,000 mPa·s to about 7,500 mPa·s at 22° C.;
- and
- crosslinking the composition to form a sealant.
7 more elements
Dependencies are inferred from the claim text.