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US 9,150,779 B2Granted
Well treatment fluid compositions and methods of use that include a delayed release percarbonate formulation
AssigneeKemira Chemicals, Inc.
InventorsCarolina Hanna Matilda Anderson, Mona Ezzelarab, Cecilla Eva Maria Johansson, Carl Wilhelm Aften, Walter Philip Watson, Richard Anthony Lalama, Geoffrey Allen Monteith, Frank Schinkel
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Abstract
A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation.
Claims8
A well treatment fluid, comprising:
- water;
- at least one hydratable polymer;
- and
- sodium percarbonate granules having a delayed release coating wherein the delayed release coating comprises a blend of poly(styrene acrylate) and poly(butyl acrylate).
1 more element
Dependencies are inferred from the claim text.