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US 11,597,864 B2Granted
Fluid diversion composition in well stimulation
AssigneeChampionX USA Inc.
InventorsDaniel Dreyer, Vyacheslav Boyraskikh, Yuntao Thomas Hu, Pious Kurian, Joseph Paul Street, Narongsak Tonmukayakul, Kin-Tai Chang
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Abstract
Described are methods and compositions for treating a subterranean formation. The method comprising introducing into the subterranean formation via a well-bore a diverter composition, the diverter composition comprising a combination of at least one deformable particle and at least one non-deformable particle; and allowing the diverter composition to block the flow of at least a portion of a treatment fluid from a first location within the well-bore to a second location.
Claims19
A diverter composition comprising:
- a combination of deformable particles and non-deformable particles, wherein the deformable particles and the non-deformable particles are degradable,
- wherein the deformable particles consist of deformable polymer selected from
- (i) crosslinked copolymers of acrylamide, acrylate, and vinylformamide monomers,
- (ii) starch grafted with acrylonitrile and acrylate monomers,
- (iii) crosslinked polymers of two or more of allylsulfonates, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, diallyl dimethylammonium salts, benzyl diallylmethylammonium salts, methacrylamidopropyltrimethylammonium salts, acrylamidopropyltrimethylammonium salts, and
- (iv) any combination thereof, and
- wherein the non-deformable particles consist of a material selected from polyesters, polyamides, polyethers, polycarbonates, polyurethanes, peptides, polypeptides, urea-formaldehyde copolymers, poly(lactic acid), polyethylene terephthalate, and combinations thereof.
4 more elements
Dependencies are inferred from the claim text.