Abstract:
Using Intermediate product of petroleum as original reagent,the hydrocarbon phenyl sulfonate surfactant,named as AS 4,has been synthesized.The effects of the concentration and composition of AS 4 on the dynamical interfacial tension of AS 4/alkali/crude oil system at different salinities,alkalinitise were examined and discussed.The result shows that when salinity is in 5~15g/L Na 2SO 4, alkalinity in 5~10g/L NaOH,surfactant AS 4 concentration in 0.1~0.5g/L,AS 4/alkali/crude oil system has ultra low minimum interfacial tension of less than 10 -3 mN/m.