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US 6,448,206 B1Granted
Sealing subterranean zones
AssigneeHalliburton Energy Services, Inc.
InventorsJames E. Griffith, Ricky A. Cox, Jiten Chatterji, Bobby J. King, Roger S. Cromwell, John L. Dennis, Jr.
Life of this patent
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Abstract
The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. One composition of the invention is comprised of water, an aqueous rubber latex, an organophilic clay, sodium carbonate, an epoxy resin and a hardening agent for said epoxy resin.
Claims13
An improved sealing composition for sealing a subterranean zone penetrated by a well bore consisting essentially of:
- an aqueous rubber latex;
- a latex stabilizing surfactant;
- an epoxy resin;
- and
- a hardening agent for said epoxy resin.
2 more elements
An improved sealing composition for sealing a subterranean zone penetrated by a well bore comprising:
- an aqueous 25%:75% by weight styrene/butadiene latex which contains water in an amount of 50% by weight of the latex present in an amount in the range of from about 40% to about 50% by weight of said composition;
- a latex stabilizing surfactant comprised of the sodium salt of a sulfonated and ethoxylated compound having the formula H(CH2)12-15(CH2CH2O)15SO3Na present in an amount in the range of from about 5% to about 15% by weight of said composition;
- an epoxy resin selected from the group consisting of a condensation product of epichlorohydrin and bisphenol A, an epoxidized bisphenol A novolac resin, the diglycidyl ether of 1,4-butanediol, the diglycidyl ether of neopentyl glycol, the diglycidyl ether of cyclohexanedimethanol and mixtures thereof present in an amount in the range of from about 40% to about 50% by weight of said composition;
- and
- an epoxy hardening agent selected from the group consisting of isophoronediamine, diethyltoluenediamine, tris(dimethylaminoethylphenol) and mixtures thereof present in an amount in the range of from about 5% to about 30% by weight of said composition.
2 more elements
Dependencies are inferred from the claim text.