石油磺酸盐对胜利油田原油、胶质、沥青质界面性质的影响

研究了石油磺酸盐对胜利油田孤四水驱原油及由该原油提取的胶质、沥青质油水界面性质的影响。实验结果表明,石油磺酸盐能显著降低各模拟油的油水界面张力,并可使其达到超低界面张力范围;而对各模型油油水界面剪切粘度的影响却不同。在一定浓度范围内,原油和沥青质模拟油的油水界面剪切粘度均随石油磺酸盐浓度的增加而增加,但当石油磺酸盐浓度足够高时,二者的界面剪切粘度却有所下降,只是下降的幅度不同;胶质模拟油的油水界面剪切粘度随着石油磺酸盐浓度的增加而减小。随石油磺酸盐浓度的改变各模拟油的ζ电位也发生了明显变化。

Influence of petroleum sulfonate on interfacial properties of crude oil,resin and asphaltene from Shengli Oilfield

The effects of petroleum sulfonate on the oil-water interfacial properties of crude oil, asphaltene and resin from Shengli Oilfield were investigated. It is shown that the interfacial tensions between model oil and water solution decrease significantly with petroleum sufonate concentration increasing, up to the range of ultra low value. But the influence on interfacial shear viscosity of model oil was different. In certain scope, the interfacial shear viscosity of asphaltene and crude model oil increases with petroleum sufonate concentration increasing, and then decreases with the petroleum sufonate concentration in creasing further. The interfacial shear viscosity between resin model oil and water solution decreases constantly with petroleum sufonate concentration increasing. Moreover, the addition of petroleum sulfonate with different concentrations brought about great changes for zeta potential of model oil.