| http://www.w3.org/ns/prov#value | - Other salts, including organic ions and other valencies, may also be used. [0010] Another embodiment of the present invention is a method of forming aqueous gels, that are more stable and viscous in high density brines than in low density brines or water, from an aqueous mixture of a surfactant, preferably erucylamidopropyl betaine, but in general having the formula: |RCONH-(CH2)a(CH2CH2O)m???(CH2
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