Interfacial tension between crude oil and water plays a significant role in enhanced oil
recovery. Many researchers seek surfactants to reduce the interfacial tension of crude oil and
water that can be applicable in reservoir conditions of high salinity and temperature. The
current study introduces the results of using two different families of ionic liquids (ILs)
including imidazolium (1-dodecyl-3-methy limidazolium chloride ([C12mim][Cl]) and 1-
octyl-3-methylimidazolium chloride ([C8mim][Cl])) and pyridinium (1-dodecyl pyridinium
chloride ([C12Py][Cl] and 1-octyl pyridinium chloride ([C8Py][Cl]) for this
purpose..Measured IFT between solutions of ILs and e southern Iranian crude oil reveals that
these ILs are successful in reducing the IFT. Unlike traditional surfactants, these ILs are more
effective as the salinity increases. Also the measurements revealed that there is a correlation
of the IFT of the solutions with salinity and temperature.
کلید واژگان :
Ionic Liquids, Interfacial Tension, Crude Oil, Spinning Drop, Pendant Drop
