Screening of Cosurfactant-Free Slugs: Project BE4A, Milestone 12, FY87: Topical Report.

摘要

This report describes our initial work with amine oxides as surfactants for chemical flooding. Our work on carboxymethylated ethoxylates was previously reported in NIPER-228. Amine oxides have high salinity range, yield low interfacial tensions, have high solubilization parameters, and, at the same time, increase the viscosity of the surfactant slug without the addition of polymer, and thus avoiding problems caused by surfactant - polymer interactions. The oil displacement results reported incorporate alcohol as a cosurfactant in the amine oxide formulations, however, compounds that attempt to incorporate the cosolvent moiety into the amine oxide molecule (ethoxylated or propoxylated amine oxides) are being studied at NIPER. 60 refs., 4 tabs. (ERA citation 14:012575)