Abstract
The amphiphilic polymer can greatly improve the stability of produced liquid and thus makes it difficult to treat. It is of great necessity to study the stability of amphiphilic polymer flooding O/W crude oil emulsion. O/W crude oil emulsion tends to be more stable with increasing amphiphilic polymer concentration and decreasing holding temperature. Amphiphilic polymer flooding O/W crude oil emulsion is much more stable, especially when polymer concentration is above critical aggregation concentration. Aggregation formed by hydrophobic groups of the amphiphilic polymer is beneficial to the stability of amphiphilic polymer flooding O/W crude oil emulsions.
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