Claims
- 1. A composition for well treatment comprising an aqueous solution of an amphoteric foaming agent and an anionic surfactant in a molar ratio of about 0.6:1 to about 1.4:1, said composition having a pH less than about 4 and being capable of forming a stable foam at a pH above 9.5.
- 2. A composition of claim 1, said composition being substantially free of foam under foaming conditions of agitation and availability of foam-forming gas.
- 3. A composition of claim 2 including particulates from a wellbore.
- 4. A composition of claim 1 wherein said amphoteric foaming agent and said anionic surfactant are present in an amount from about 0.2% to about 2.0% by weight of said solution.
- 5. A composition of claim 1 wherein said amphoteric foaming agent is an amine oxide foaming agent.
RELATED APPLICATION
This application is a division of application Ser. No. 08/006,791 of the same title, filed on Jan. 21, 1993, now U.S. Pat. No. 5,385,206.
US Referenced Citations (15)
Divisions (1)
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Number |
Date |
Country |
Parent |
06791 |
Jan 1993 |
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