4.4 Article

Research interfacial properties of the novel lignosulfonates

Publisher

TAYLOR & FRANCIS INC
DOI: 10.1080/00908310600710699

Keywords

effect; enhanced oil recovery; interfacial activity; modified lignosulfonate

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The interfacial tensions between the crude oil and the novel modified lignosulfonate solutions were measured by a spinning drop interfacial tension apparatus. Some effects that influence on IFT were discussed. With the increase of alkyl chain length or the number of lipophilic groups introduced, the interfacial activity of the modified lignosulfonate increases, and the optimum surfactant concentration required to reach ultra-low IFT decreases. Excellent activity at the interface of crude oil and the solutions was observed. The interfacial tensions of the modified lignosulfonates could be ultra-low over a wide range of surfactant concentration and alkali concentration with out the addition of other surfactants. They are capable of being the principal surfactant in enhanced oil recovery (EOR).

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