Treating a subterranean formation with a composition having multiple curing stages
AssigneeHalliburton Energy Services, Inc.
InventorsPhilip D. Nguyen, Loan K. Vo, Bradley J. Sparks
Life of this patent
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Abstract
The present invention relates to compositions for treatment of subterranean formations including a curable resin that is amine-curable and a curing agent having a structure including at least one primary amine and at least one secondary amine, and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include obtaining or providing a composition including a curable resin that is amine-curable and a curing agent having a structure including at least one primary amine and at least one secondary amine. The method can include placing the composition in a subterranean formation downhole.
Claims18
A method of treating a subterranean formation, comprising:
- placing in the subterranean formation a composition comprising:
- a curable resin, wherein the resin is amine-curable;
- and
- a curing agent having a structure comprising at least one primary amine and at least one secondary amine
- wherein the composition has at least a first and a second curing stage and a consolidation strength of the first stage being less than a consolidation strength of the second stage, wherein the first curing stage comprises curing of the curable resin with the primary amine group of the curing agent, and wherein the second curing stage comprises curing of the curable resin with the secondary amine of the curing agent.
A method of treating a subterranean formation, comprising:
- placing a composition in the subterranean formation, the subterranean formation comprising a fracture, the composition comprising:
- a proppant or gravel coated with a mixture comprising:
- a curable resin, wherein the resin is amine-curable;
- a curing agent having a structure comprising at least one primary amine and at least one secondary amine;
- a surfactant;
- and
- a carrier fluid,
- wherein the mixture has at least a first and a second curing stage and a consolidation strength of the first stage being less than a consolidation strength of the second stage, wherein the first curing stage comprises curing of the curable resin with the primary amine group of the curing agent, and wherein the second curing stage comprises curing of the curable resin with the secondary amine of the curing agent;
- and
- curing the composition.
A composition for treatment of a subterranean formation, comprising:
- a curable resin, wherein the resin is amine-curable;
- a curing agent having a structure comprising at least one primary amine and at least one secondary amine;
- and
- a proppant or gravel,
- wherein the composition has at least a first and a second curing stage and a consolidation strength of the first stage being less than a consolidation strength of the second stage, wherein the first curing stage comprises curing of the curable resin with the primary amine group of the curing agent, and wherein the second curing stage comprises curing of the curable resin with the secondary amine of the curing agent.
Dependencies are inferred from the claim text.