Extended- and multimodal-release compositions
AssigneeFinoric, LLC
InventorsDaniel R. Dreyer, Pious Kurian, Ambrish Kamdar
Life of this patent
Estimating the term…
Abstract
Disclosed herein are extended- and multimodal-release compositions for inhibiting scale in an industrial water system. In an example, an extended-release composition for inhibiting scale in an industrial water system includes a solid, particulate scale inhibitor. The solid, particular scale inhibitor may include a phosphonate, a carboxylate, or a combination thereof; and a divalent cation, a trivalent cation, or a combination thereof. In some cases, the solid, particulate scale inhibitor is substantially free of an inert material
Claims19
A multimodal-release composition for inhibiting scale in an industrial water system comprising:
- an extended-release composition, wherein the extended-release composition comprises:
- a solid, particulate scale inhibitor comprising:
- a ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a multivalent cation comprising at least one of a divalent cation, a trivalent cation, or a combination thereof, and
- a second solid, particulate scale inhibitor comprising:
- a second ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a monovalent cation,
- wherein the extended-release composition and the second solid, particulate scale inhibitor are present in a weight ratio of from about 10:1 to about 1:10.
A method of inhibiting scale formation in a subterranean formation, the method comprising:
- forming a multimodal-release composition comprising:
- a extended-release composition comprising:
- a solid, particulate scale inhibitor comprising:
- a ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a multivalent cation comprising at least one of a divalent cation,
- a trivalent cation, or a combination thereof;
- and
- a second solid, particulate scale inhibitor comprising:
- a second ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a monovalent cation,
- wherein the extended-release composition and the second solid, particulate scale inhibitor are present in a weight ratio of from about 10:1 to about 1:10;
- mixing the multimodal-release composition with a stimulation composition comprising a stimulation fluid and optionally one or more proppants to form a stimulation mixture;
- and
- injecting the stimulation mixture under pressure into hydraulically generated fractures of a wellbore.
A method of inhibiting scale formation in an industrial water system, said method comprising:
- forming a multimodal-release composition comprising:
- a extended-release composition comprising:
- a solid, particulate scale inhibitor comprising:
- a ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a multivalent cation comprising at least one of a divalent cation,
- a trivalent cation, or a combination thereof;
- and
- a second solid, particulate scale inhibitor comprising:
- a second ligand component comprising at least one of a phosphonate, a carboxylate, or a combination thereof;
- and
- a monovalent cation,
- wherein the extended-release composition and the second solid, particulate scale inhibitor are present in a weight ratio of from about 10:1 to about 1:10;
- mixing the multimodal-release composition with an aqueous fluid to obtain a scale inhibiting composition;
- and
- adding the scale inhibiting composition to the system to inhibit scale formation on a surface of the system which is in contact with the fluid.
Dependencies are inferred from the claim text.