EPOXY RESIN COMPOSITIONS AND USES THEREOF

20250075042

18/813845

August 23, 2024

Embodiments of the present disclosure generally relate to epoxy resin compositions and uses thereof. In some embodiments, a method includes providing an emulsion to a wellbore. The emulsion comprises an epoxy resin, a curing agent, water, and a block copolymer surfactant. The method includes de-emulsifying the emulsion in the wellbore to form a water phase and an epoxy phase and applying the epoxy phase to a wellbore component. The method includes curing the epoxy phase in the aperture after de-emulsifying the emulsion.

1. A method comprising: providing an emulsion to a wellbore, the emulsion comprising: an epoxy resin, a curing agent, a block copolymer surfactant having at least one hydrophilic block and at least one hydrophobic block; and water; de-emulsifying the emulsion in the wellbore providing a water phase and an epoxy phase; applying the epoxy phase to a wellbore component; and curing the epoxy phase at the wellbore component after de-emulsifying the emulsion.

2. The method of claim 1, wherein the block copolymer surfactant comprises an ethylene oxide-propylene oxide copolymer having a molar ratio of ethylene oxide units to propylene oxide units of about 0.8 to about 1.2.

3. The method of claim 2, wherein the wellbore component is selected from the group consisting of an aperture of the wellbore, equipment disposed within the wellbore, sand disposed within the wellbore, and combinations thereof.

4. The method of claim 1, wherein de-emulsifying the emulsion occurs in the wellbore at a temperature of about 35° C. to about 100° C.

5. The method of claim 1, wherein the emulsion comprises the epoxy resin and the curing agent in a molar ratio of about 2:1 to about 1:2.

6. The method of claim 1, wherein the emulsion comprises the epoxy resin and the block copolymer surfactant in a weight ratio of about 1:1 to about 99.5:0.5.

7. The method of claim 1, wherein the hydrophilic block is selected from the group consisting of ethylene oxide units, isopropyl acrylamide units, hydroxylpropyl cellulose units, vinylcaprolactam units, 2-isopropyl-2-oxazoline units, vinylmethyl ether units, and combinations thereof.

8. The method of claim 1, wherein the hydrophobic block is selected from the group consisting of propylene oxide units, epoxy units, and combinations thereof.

9. The method of claim 1, wherein the block copolymer surfactant is a diblock copolymer comprising the hydrophilic block and the hydrophobic block.

10. The method of claim 9, wherein the hydrophilic block is selected from the group consisting of ethylene oxide units, isopropyl acrylamide units, hydroxylpropyl cellulose units, vinylcaprolactam units, 2-isopropyl-2-oxazoline units, vinylmethyl ether units, and combinations thereof.

11. The method of claim 10, wherein the hydrophobic block is selected from the group consisting of propylene oxide units, epoxy units, and combinations thereof.

12. The method of claim 9, wherein the hydrophobic block is selected from the group consisting of propylene oxide units, epoxy units, and combinations thereof.

13. The method of claim 1, wherein the block copolymer surfactant comprises a copolymer selected from the group consisting of Formula (I), Formula (II), Formula (III), and combinations thereof: [chemical expression included] wherein each of o, m, and p of Formula (I) is independently about 1 to about 50 and the block copolymer surfactant of Formula (I) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5; [chemical expression included] wherein each of m and n of Formula (II) is independently about 10 to about 60 and the block copolymer surfactant of Formula (II) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5; [chemical expression included] wherein each of d and e of Formula (III) is independently about 1 to about 50, R3 of Formula (III) is a hydrocarbon chain containing about 1 to about 22 carbon atoms, and the block copolymer surfactant of Formula (III) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5.

14. The method of claim 1, wherein the block copolymer surfactant comprises an ethylene oxide-propylene oxide block copolymer represented by Formula (I): [chemical expression included] wherein each of o, m, and p is independently about 1 to about 50 and the block copolymer surfactant of Formula (I) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5.

15. The method of claim 1, wherein the block copolymer surfactant comprises an ethylene oxide-propylene oxide reverse copolymer surfactant represented by Formula (II): [chemical expression included] wherein each of m and n is independently about 10 to about 60 and the block copolymer surfactant of Formula (II) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5.

16. The method of claim 1, wherein the block copolymer surfactant comprises an ethylene oxide-propylene oxide alkoxylate represented by Formula (III): [chemical expression included] wherein each of d and e is independently about 1 to about 50, R3 is a hydrocarbon chain containing about 1 to about 22 carbon atoms, and the block copolymer surfactant of Formula (III) has a weight average molecular weight (Mw) of about 1,500 g/mol to about 8,000 g/mol and a molar ratio of ethylene oxide units to propylene oxide units of about 0.25 to about 1.5.

17. The method of claim 1, wherein the epoxy resin has a weight average molecular weight (Mw) of about 340 g/mol to about 470 g/mol and an epoxy equivalent weight of about 170 g/mol to about 235 g/mol.

18. The method of claim 1, wherein the curing agent is selected from the group consisting of: a polyamine represented by Formula (IVa): [chemical expression included] wherein: n of formula (IVa) is 1, 2, 3, 4, 5, or 6; a polyetheramine represented by Formula (IVb): [chemical expression included] wherein: x of formula (IVb) is about 2 to about 68; a polyetheramine represented by Formula (IVc): [chemical expression included] wherein: each of x, y, and z is independently greater than 1; and x+y+z of formula (IVc) is about 5 to about 85; a polyetheramine represented by Formula (IVd): [chemical expression included] wherein: R4 of formula (IVd) is a hydrogen atom (H) for ethylene oxide (EO) or R4 is CH3 for propylene oxide (PO); x of formula (IVd) is about 1 to about 40; and y of formula (IVd) is about 1 to about 40; a polyetheramine represented by Formula (IVe): [chemical expression included] wherein: x+z of formula (IVe) is about 1.2 to about 6; and y of formula (IVe) is about 2 to about 39; and combinations thereof.

19. The method of claim 1, wherein the curing agent comprises an aromatic amine.

20. The method of claim 1, wherein the curing agent comprises a tertiary amine.

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