Abstract

Surfactant adsorption is one of the crucial issues in surfactant flooding to enhance the oil recovery factor. In this paper, we investigated the profound impact of two different surfactants on the carbonate rocks adsorption density in different temperatures. According to the results of this experiment, carbonate rocks adsorption density increased with the increase of surfactant concentrations. Higher surfactants’ concentration, adsorption density had reached a plateau after 7 hours. Furthermore, temperature increase has caused to reduce the adsorption density for all surfactant concentration. The maximum adsorption density is about 50 mg/g at 20 $°\mathrm{C}.$ Besides, polyacrylamide addition would decrease the adsorption density.

摘要

表面活性剂的吸附是表面活性剂驱以提高采油率的关键问题之一。在本文中，我们研究了两种不同表面活性剂对不同温度下碳酸盐岩吸附密度的深远影响。根据该实验的结果，碳酸盐岩石的吸附密度随表面活性剂浓度的增加而增加。7小时后，较高的表面活性剂浓度，吸附密度达到平稳。此外，温度升高导致所有表面活性剂浓度下的吸附密度降低。20时最大吸附密度约为50 mg / g $°\mathrm{C}。$ 此外，聚丙烯酰胺的加入会降低吸附密度。