Stabilized aqueous foam systems and concentrate and method for making them

Patent 4442018 Issued on April 10, 1984. Estimated Expiration Date:

November 1, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3422011

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Inventor

Rand, Peter B.

Assignee

The United States of America as represented by the United States

Application

No. 06/438126 filed on 11/01/1982

US Classes:

516/14, The agent contains organic compound containing sulfoxy*252/3, Foam or gas phase containing252/382, Foams, liquids, or fluids424/43, EFFERVESCENT OR PRESSURIZED FLUID CONTAINING507/102Contains intended gaseous phase at entry into wellbore

Examiners

Primary: Lovering, Richard D.
Assistant: Kilby, Catherine S.

Attorney, Agent or Firm

International Classes

C09K 8/02 (20060101)
C09K 8/38 (20060101)
A62D 1/00 (20060101)
A62D 1/02 (20060101)

Abstract

This invention comprises a combination of a water soluble polymer of the polyacrylic acid type, a foam stabilizer of dodecyl alcohol, a surfactant, a solvent and water as a concentrate for use in producing stabilized aqueous foams. In another aspect, the invention comprises a solution of the concentrate with water. In still another aspect the invention includes a method of generating stabilized aqueous foams.