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US 6,231,664 B1Granted
Well sealing compositions and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, David D. Onan, Roger S. Cromwell, Bobby J. King
Life of this patent
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Abstract
The present invention provides improved well sealing compositions and methods. The compositions are basically comprised of slag cement, water, a slag cement set activator, a hardenable epoxide containing material and an epoxide containing material hardening agent.
Claims22
An improved well sealing composition consisting essentially of:
- slag cement;
- a slag cement set activator present in an amount sufficient to provide increased hydraulic activity to said slag cement;
- water present in an amount sufficient to form a pumpable slurry;
- a hardenable epoxide containing material present in an amount in the range of from about 3% to about 50% by weight of slag cement in said composition;
- and
- an epoxide containing material hardening agent present in an amount in the range of from about 2% to about 40% by weight of slag cement in said composition.
3 more elements
An improved well sealing composition consisting essentially of:
- slag cement;
- a slag cement activator comprised of a mixture of sodium hydroxide and sodium carbonate present in an amount of about 2.75% by weight of slag cement in said composition;
- water present in an amount of about 46% by weight of slag cement in said composition;
- a hardenable epoxide containing liquid comprised of the diglycidyl ether of 1,4-butanediol present in an amount of about 7% by weight of slag cement in said composition;
- and
- an epoxide containing liquid hardening agent comprised of diethyltoluenediamine present in an amount of about 2.4% by weight of slag cement in said composition.
3 more elements
An improved well sealing composition consisting essentially of:
- slag cement;
- a slag cement set activator present in an amount in the range of from about 8% to about 20% by weight of slag cement in said composition;
- water present in an amount in the range of from about 30% to about 60% by weight of slag cement in said composition;
- a hardenable epoxide containing material present in an amount in the range of from about 3% to about 50% by weight of slag cement in said composition;
- and
- an epoxide containing material hardening agent present in an amount in the range of from about 2% to about 40% by weight of slag cement in said composition.
3 more elements
Dependencies are inferred from the claim text.