Patent ID: 11926788
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 17:
18. A foamed treatment fluid comprising:
a cement comprising a Portland cement and present in an amount of about 10% to about 30% by weight of the foamed treatment fluid;
a viscosifying agent comprising a synthetic clay and present in an amount of about 0.25% to about 5% by weight of the foamed treatment fluid;
a thixotropic additive comprising a sodium silicate and present in an amount of about 0.1% to about 5% by weight of the foamed treatment fluid;
a foaming surfactant present in an amount of about 0.25% to about 5% by weight of the foamed treatment fluid;
a gas comprising nitrogen and present in an amount of about 1% to about 50% by weight of the foamed treatment fluid; and
water, wherein the foaming surfactant comprises a polyethylene glycol alkyl ether (C6-C10), sulfate ammonium salt.