Organoclay materials for environmentally sensitive regions

摘要

Fluids comprising oil; and an organophilic clay comprising a smectite clay modified by reaction with a protonated amphoteric surfactant. The smectite clay may be montmorillonite, beidellite, nontronite, or a combination thereof. The protonated amphoteric surfactant may be cetyl/myristyl amine oxide, a stearyl amine oxide, a stearyl betaine, or a combination thereof. In some cases, the fluid may also include water and/or a solid reactive metal.

主权项

1. A fluid comprising
an oil; and an organophilic clay comprising a protonated amphoteric surfactant modified smectite clay, and
the protonated amphoteric surfactant is substituted for an amount in the range of from about 25% to about 100% of the exchangeable cations, and,the protonated amphoteric surfactant comprises a phosphobetaine, an imidazoline, a cetyl/myristyl amine oxide, a stearyl amine oxide, a stearyl betaine, and combinations thereof.