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US 6,500,252 B1Granted
High strength foamed well cement compositions and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Bobby J. King, Frank Zamora, Clyde R. Anderson, Billy J. Bennett, Roger S. Cromwell
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Abstract
High strength foamed well cement compositions and methods of cementing subterranean zones penetrated by well bores are provided. The foamed well cement compositions are basically comprised of a hydraulic cement, hydrophilic fibers, water sufficient to form a pumpable slurry, a mixture of foaming and foam stabilizing surfactants and sufficient gas to foam the slurry.
Claims28
A high strength, resilient, foamed well cement composition comprising:
- a hydraulic cement;
- hydrophilic fibrillated polyolefin net-shaped fibers coated with a hydrophilic surface active agent, said fibers being present in said composition in an amount in the range of from about 0.1% to about 0.25% by weight of the cement in said composition;
- water present in an amount sufficient to form a pumpable slurry;
- at least one foaming and foam stabilizing surfactant present in an amount sufficient to form and stabilize said foamed cement composition;
- and
- sufficient gas to foam said slurry.
3 more elements
A foamed cement composition comprising:
- a hydraulic cement;
- hydrophilic fibrillated polyolefin net-shaped fibers coated with a hydrophilic surface active agent, said fibers being present in said composition in an amount in the range of from about 0.1% to about 0.25% by weight of the cement in said composition;
- water present in an amount sufficient to form a pumpable slurry;
- a surfactant present in an amount sufficient to form the foamed cement composition;
- and
- sufficient gas to foam said slurry.
3 more elements
Dependencies are inferred from the claim text.