Friction reducing
AssigneeCalgon Corporation
InventorsFred David Martin, Jerry Emile Boothe
Life of this patent
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Abstract
Use of poly (dimethylaminomethyl acrylamide) as a friction reducer for aqueous fluids flowing through a conduit, especially for the aqueous hydraulic fracturing of subterranean formations.
Claims4
A method for reducing the friction loss of aqueous fluids flowing through a conduit comprising maintaining in the aqueous fluid an effective amount of a polymer of dimethylaminomethyl acrylamide having a molecular weight of at least 100,000.
A method for fracturing a subterranean well formation comprising injecting into the well under fracturing pressures an aqueous fracturing fluid containing a polymer of dimethylaminomethyl acrylamide having a molecular weight of at least 100,000 in an amount sufficient to reduce the friction loss of said aqueous fluid.
Dependencies are inferred from the claim text.