Hollow hydrogel capsules and methods of using the same
AssigneeHalliburton Energy Services, Inc.
InventorsPhilip Wayne Livanec, Scott Anthony Klasner
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Abstract
The present invention relates to hollow hydrogel capsules. In various embodiments, the present invention provides a method of treating a subterranean formation with a hollow hydrogel capsule including a hydrogel shell including a hydrolyzed and crosslinked polymerized composition. The hollow hydrogel capsule also includes a hollow interior including at least one component of a downhole composition for subterranean petroleum or water well drilling, stimulation, clean-up, production, completion, abandonment, or a combination thereof. In various embodiments, the present invention provides compositions comprising the hollow hydrogel capsules and methods of making the hollow hydrogel capsules.
Claims30
A method of treating a subterranean formation, the method comprising:
- obtaining or providing one or more hollow hydrogel capsules comprising
- a hydrogel shell comprising a hydrolyzed and crosslinked polymerized composition, the pre-polymerized composition comprising
- at least one vinyl amine comprising at least one hydrolytically deprotectable masked primary amine, and
- at least one polyvinyl compound;
- and
- a hollow interior comprising at least one component of a downhole composition for subterranean petroleum or water well drilling, stimulation, clean-up, production, completion, abandonment, or a combination thereof,
- wherein the crosslinking comprises crosslinking with at least one molecule comprising a plurality of functional groups condensable with primary amines;
- and
- contacting the hollow hydrogel capsules with a subterranean material downhole.
A hydrogel capsule composition for treatment of a subterranean formation comprising:
- at least one hollow hydrogel capsule comprising
- a hydrogel shell comprising a hydrolyzed and crosslinked polymerized composition, the pre-polymerized composition comprising
- at least one vinyl amine comprising at least one hydrolytically deprotectable masked primary amine, and
- at least one polyvinyl compound;
- and
- a hollow interior comprising at least one component of a downhole composition for subterranean petroleum or water well drilling, stimulation, clean-up, production, completion, abandonment, or a combination thereof,
- wherein the crosslinking comprises crosslinking with at least one molecule comprising a plurality of functional groups condensable with primary amines;
- and
- a downhole composition for subterranean petroleum or water well drilling, stimulation, clean-up, production, completion, abandonment, or a combination thereof.
A hollow hydrogel capsule for treatment of a subterranean formation comprising:
- a hydrogel shell comprising a hydrolyzed and crosslinked polymerized composition, the pre-polymerized composition comprising
- at least one vinyl amine comprising at least one hydrolytically deprotectable masked primary amine, and
- at least one polyvinyl compound;
- and
- a hollow interior comprising at least one component of a downhole composition for subterranean petroleum or water well drilling, stimulation, clean-up, production, completion, abandonment, or a combination thereof;
- wherein the crosslinking comprises crosslinking with at least one molecule comprising a plurality of functional groups condensable with primary amines.
Dependencies are inferred from the claim text.