Viscoelastic surfactant based foam fluids
AssigneeThe Dow Chemical Company
InventorsJeffrey E. Bonekamp, Gene D. Rose, Donald L. Schmidt, Arthur S. Teot, Edward K. Watkins
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Abstract
A foam-fluid composition for use in foam fracture applications and foam slurry transport comprises a thickening amount of a viscoelastic surfactant composition, a functionally effective amount of a surfactant composition capable of forming a foam, and an aqueous liquid. Foam-fluid formulations are easily prepared, reusable, shear stable, easily pumped and form stable foams over a wide temperature range and exhibit high viscosities even at relatively high temperatures.
Claims11
A foam fluid composition comprising a thickening amount of a non-fluorinated, ionic, viscoelastic surfactant comprising a surfactant ion having a hydrophobic moiety chemically bonded to an ionic, hydrophilic moiety, and an amount and type of an organic counterion having an organic moiety capable of associating with the surfactant ion sufficient to form a viscoelastic surfactant, a functionally effective amount of a surfactant capable of forming a foam and an aqueous liquid.
Dependencies are inferred from the claim text.