Treatment of Subterranean Formations with Self-Healing Resins

Patent metadata

Field	Value
Publication number	US-2017247296-A1
Application number	US-201415509184-A
Country	US
Kind code	A1
Filing date	Oct 7, 2014
Priority date	Oct 7, 2014
Publication date	Aug 31, 2017
Grant date	—

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

1 - 54 . (canceled)

55 . A method of treating a subterranean formation, comprising:
placing a composition into a subterranean formation, the composition comprising 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, or a solvent; and forming a self-healing hardened resin in the subterranean formation from the composition.

56 . The method of claim 55 , wherein the composition further comprises a material outside the outer wall of the plurality of capsules comprising at least one of a second hardenable resin or a second hardener or activator.

57 . The method of claim 56 , wherein at least one of:
the composition comprises the second hardenable resin and the inner compartment comprises the first hardener or activator, the composition comprises the second hardener or activator and the inner compartment comprises the first hardenable resin, or the composition comprises the second hardenable resin and the inner compartment comprises the first solvent.

58 . The method of claim 55 , wherein the inner compartment of at least some of the plurality of capsules comprises the first hardenable resin and the inner compartment of at least some of the plurality of capsules comprises the first hardener or activator.

59 . The method of claim 55 , comprising curing the composition, to form a cured product of the composition, wherein the hardened resin comprises the cured product of the composition.

60 . The method of claim 59 , further comprising allowing damage to form in the cured product thereby rupturing one or more of the plurality of capsules, wherein release of contents of the inner compartment of the ruptured capsules at least partially heals the damage.

61 . The method of claim 60 , wherein healing the damage comprises reaction of the contents of inner compartments of at least some of the ruptured capsules with at least some of the material that was outside the outer wall of the plurality of capsules prior to the rupturing.

62 . The method of claim 60 , wherein healing the damage comprises reaction of the contents of inner compartments of at least some of the ruptured capsules with contents of different inner compartments of at least some of the ruptured capsules.

63 . The method of claim 60 , wherein healing comprises contacting the second hardenable resin with the first hardener or activator in the ruptured capsules.

64 . The method of claim 56 , further comprising:
curing the composition, to form a cured product of the composition, wherein the hardened resin comprises the cured product of the composition; and allowing damage to form in the cured product thereby rupturing one or more of the plurality of capsules, wherein release of contents of the inner compartment of the ruptured capsules at least partially heals the damage; wherein the healing comprises contacting the second hardener or activator with the first hardenable resin of the ruptured capsules.

65 . The method of claim 56 , further comprising:
curing the composition, to form a cured product of the composition, wherein the hardened resin comprises the cured product of the composition; and allowing damage to form in the cured product thereby rupturing one or more of the plurality of capsules, wherein release of contents of the inner compartment of the ruptured capsules at least partially heals the damage; wherein the healing comprises contacting the first hardenable resin of some of the ruptured capsules with the first hardener or activator of some of the ruptured capsules.

66 . The method of claim 56 , further comprising:
curing the composition, to form a cured product of the composition, wherein the hardened resin comprises the cured product of the composition; and allowing damage to form in the cured product thereby rupturing one or more of the plurality of capsules, wherein release of contents of the inner compartment of the ruptured capsules at least partially heals the damage, wherein the healing comprises contacting the first solvent of some of the ruptured capsules with a hardened resin formed from the second hardenable resin.

67 . The method of claim 55 , 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 (C 2 -C 50 )hydrocarbon.

68 . The method of claim 56 , wherein the second 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 (C 1 -C 10 )alkyl acrylate ester monomer, a (C 1 -C 10 )alkyl (C 1 -C 10 )alkylacrylate ester monomer, an alkene-containing substituted or unsubstituted (C 1 -C 50 )hydrocarbon, a cyclic olefin, a vinyl alcohol, a divinyl-substituted (C 1 -C 10 )hydrocarbon, a disulfide-containing epoxy-resin monomer, a diaminopolyorganosiloxane, a diaminopolyalkyleneoxide, a polyorganosiloxane diol, or a polyalkyleneoxide diol.

69 . The method of claim 56 , 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 (C 2 -C 50 )hydrocarbon.

70 . The method of claim 55 , wherein the capsules have a diameter of about 1 micron to about 1 mm, and wherein the outer wall of the capsules have a thickness of about 10 nm to about 100 microns.

71 . The method of claim 55 , 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.

72 . A system for performing the method of claim 55 , the system comprising:
a tubular disposed in the subterranean formation; and a pump configured to pump the composition in the subterranean formation through the tubular.

73 . A method of treating a subterranean formation, the method comprising:
placing a composition into a subterranean formation, the composition comprising:
a plurality of capsules having a diameter of about 0.1 micron to about 10 mm and 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, or a solvent; and
a material outside the outer wall of the plurality of capsules comprising at least one of a second hardenable resin, a second hardener, or a second activator, wherein at least one of:
the composition comprises the second hardenable resin and the inner compartment comprises the first hardener, the first activator, or a combination thereof,
the composition comprises the second hardenable resin and the inner compartment comprises the first hardener, the first activator, or a

Assignees

• Halliburton Energy Services Inc

Inventors

• Salla Rajender
• Shroff Rama Mallikarjuna
• Pravesh Jag

Classifications

• C09K8/70

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

• C04B40/0633

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

• C04B26/02

  Macromolecular compounds · CPC title

• C09K8/44

  containing organic binders only · CPC title

• C09K8/467

  containing additives for specific purposes · CPC title