Polymer gel for water control applications
AssigneeSchlumberger Technology Corporation
InventorsRichard Donald Hutchins, Syed Afaq Ali
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Abstract
A method for reducing a permeability of at least one zone in a subterranean formation that includes introducing a treatment fluid to at least one permeable zone in a subterranean formation. The treatment fluid contains a solvent, a crosslinking agent, and a water-soluble polymer that is a copolymer of an acrylamide monomer and an n-vinyl amide monomer, or a terpolymer of an acrylamide monomer, an n-vinyl amide monomer, and an acrylic-acid based monomer. The treatment fluid is then allowed to crosslink and form a gel in the zone.
Claims17
A method for reducing a permeability of at least one zone in a subterranean formation, the method comprising:
- introducing a treatment fluid to at least one permeable zone in the subterranean formation, the treatment fluid comprising a solvent, a crosslinking agent and a water-soluble polymer selected from the group consisting of:
- a copolymer comprising acrylamide monomer and an n-vinyl amide monomer;
- a terpolymer comprising an acrylamide monomer, an n-vinyl amide monomer, and an acrylic-acid based monomer;
- and combinations thereof, and
- allowing the treatment fluid to crosslink and form a gel in the presence of H2S gas in the zone.
Dependencies are inferred from the claim text.