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US 6,547,871 B2Granted
Foamed well cement slurries, additives and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Roger S. Cromwell, Chad R. Brenneis, Bobby J. King, Dennis W. Gray, Frank Zamora
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Abstract
The present invention provides improved foamed well cement slurries, additives and methods. The foamed well cement slurries are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, sufficient gas to form a foam and an effective amount of an additive for foaming the slurry comprised of hydrolyzed keratin.
Claims13
A foamed cement slurry for cementing a well comprising:
- a hydraulic cement;
- sufficient water to form a pumpable slurry;
- sufficient gas to form a foam;
- and
- an effective amount of an additive for foaming and stabilizing said slurry comprised of hydrolyzed keratin.
2 more elements
A foamed cement slurry comprising:
- a hydraulic cement;
- sufficient water to form a pumpable slurry;
- sufficient gas to form a foam;
- and
- hydrolyzed keratin present in said foamed cement slurry in an amount in the range of from about 1% to about 5% by volume of said water in said foamed cement slurry.
2 more elements
Dependencies are inferred from the claim text.