Treatment of subterranean formations with self-healing resins

Patent metadata

Field	Value
Publication number	US-10280122-B2
Application number	US-201415509184-A
Country	US
Kind code	B2
Filing date	Oct 7, 2014
Priority date	Oct 7, 2014
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

Various embodiments disclosed relate to compositions including a plurality of capsules each independently comprising an outer wall and an inner compartment, the inner compartment independently comprising at least one of a first hardenable resin, a first hardener or activator, and a solvent, self-healing hardened resins formed from the same, and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation including placing the composition in a subterranean formation, and forming a selfhealing hardened resin in the subterranean formation from the composition.

First claim

What is claimed is:

1. A method of treating a subterranean formation, comprising:
placing a tubular in the subterranean formation;
pumping, via a pump, a composition in a subterranean formation through the tubular, the composition comprising a first hardenable resin and a plurality of capsules, wherein some of the capsules contain a second hardenable resin, other capsules contain a first hardener or activator, and others contain a solvent; and
forming a hardened resin in the subterranean formation from the first hardenable resin with the plurality of capsules still intact.

2. The method of claim 1 , wherein the composition further comprises a second hardener or activator outside the plurality of capsules.

3. The method of claim 2 , further comprising:
allowing damage to form in the hardened resin thereby rupturing one or more of the plurality of capsules, wherein release of contents of the ruptured capsules at least partially heals the damage;
wherein the healing comprises contacting the second hardener or activator with the second hardenable resin of the ruptured capsules.

4. The method of claim 2 , wherein the second hardener or activator comprises at least one of an amine, a diamine, a polyamine, an alcohol, a diol, a polyol, a thiol, a dithiol, a polythiol, a dialdehyde, a polyaldehyde, a urea, a disulfide, an anhydride, a dianhydride, or an ethylenically unsaturated substituted or unsubstituted (C2-C50)hydrocarbon.

5. The method of claim 1 , further comprising allowing damage to form in the hardened resin thereby rupturing one or more of the plurality of capsules, wherein release of contents of the ruptured capsules at least partially heals the damage.

6. The method of claim 5 , wherein healing the damage comprises reaction of the contents of the ruptured capsules with at least some of the material that was outside of the plurality of capsules prior to the rupturing.

7. The method of claim 5 , wherein healing the damage comprises reaction of the contents of at least some of the ruptured capsules with contents of different ruptured capsules.

8. The method of claim 5 , wherein healing comprises contacting the first hardenable resin with the first hardener or activator in the ruptured capsules.

9. The method of claim 1 , further comprising:
allowing damage to form in the hardened resin thereby rupturing one or more of the plurality of capsules, wherein release of contents of the ruptured capsules at least partially heals the damage;
wherein the healing comprises contacting the second hardenable resin of some of the ruptured capsules with the first hardener or activator of some of the ruptured capsules.

10. The method of claim 1 , further comprising:
allowing damage to form in the hardened resin thereby rupturing one or more of the plurality of capsules, wherein release of contents of the ruptured capsules at least partially heals the damage,
wherein the healing comprises contacting the solvent of some of the ruptured capsules with the hardened resin.

11. The method of claim 1 , wherein the first hardener or first activator comprises at least one of an amine, a diamine, a polyamine, an alcohol, a diol, a polyol, a thiol, a dithiol, a polythiol, a dialdehyde, a polyaldehyde, a urea, a disulfide, an anhydride, a dianhydride, or an ethylenically unsaturated substituted or unsubstituted (C2-C50)hydrocarbon.

12. The method of claim 1 , wherein the first hardenable resin comprises at least one of a thermoplastic polymer or monomer thereof, a shellac, a polyamide monomer, a silyl-modified polyamide monomer, a polyester monomer, a polycarbonate monomer, a polycarbamate monomer, a polyurethane monomer, a natural resin, an epoxy-based resin monomer, a furan-based resin monomer, a phenolic-based resin monomer, a urea-aldehyde resin monomer, a phenol-phenol formaldehyde-furfuryl alcohol resin monomer, a diisocyanate resin monomer, a vinyl monomer, a (C1-C10)alkyl acrylate ester monomer, a (C1-C10)alkyl (C1-C10)alkylacrylate ester monomer, an alkene-containing substituted or unsubstituted (C1-C50)hydrocarbon, a cyclic olefin, a vinyl alcohol, a divinyl-substituted (C1-C10)hydrocarbon, a disulfide-containing epoxy-resin monomer, a diaminopolyorganosiloxane, a diaminopolyalkyleneoxide, a polyorganosiloxane diol, or a polyalkyleneoxide diol.

13. The method of claim 1 , wherein the capsules have a diameter of about 1 micron to about 1 mm, and wherein an outer wall of the capsules have a thickness of about 10 nm to about 100 microns.

14. The method of claim 1 , wherein the composition further comprises a proppant, and wherein the placing of the composition in the subterranean formation comprises fracturing at least part of the subterranean formation to form at least one subterranean fracture.

15. A method of treating a subterranean formation, the method comprising:
placing a tubular in the subterranean formation;
pumping, via a pump, a composition in a subterranean formation through the tubular, the composition comprising:
a plurality of capsules having a diameter of about 0.1 micron to about 10 mm wherein some of the capsules contain a first hardenable resin, other capsules contain a first hardener or activator, and other capsules contain a solvent; and
a material outside the plurality of capsules comprising a second hardenable resin and at least one of a second hardener or a second activator; and

forming a hardened resin in the subterranean formation from the second hardenable resin with the plurality of capsules still intact.

Assignees

• Halliburton Energy Services Inc

Inventors

• Salla Rajender
• Shroff Rama Mallikarjuna
• Pravesh Jag

Classifications

• C04B26/02

  Macromolecular compounds · CPC title

• C09K8/70

  characterised by their form or by the form of their components, e.g. foams · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title

• C04B40/0633

  Chemical separation of ingredients, e.g. slowly soluble activator · CPC title

• C04B40/0675 Primary

  Mortars activated by rain, percolating or sucked-up water; Self-healing mortars or concrete · CPC title