Methods and compositions for cementing subterranean zones
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, D. Chad Brenneis, Dennis W. Gray, Krista L. Keener
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Abstract
Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a hydraulic cement, sufficient water to form a slurry and a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid. The cement composition is placed in the subterranean zone to be cemented and allowed to set into an impermeable solid mass therein.
Claims40
A cement composition comprising:
- a hydraulic cement;
- sufficient water to form a slurry;
- and
- a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid.
A cement composition comprising:
- a hydraulic cement;
- sufficient water to form a slurry;
- and
- a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid.
An additive for use in cementing comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid.
Dependencies are inferred from the claim text.