The invention provides a synergistic surfactant composition comprising: (a) from 5 to 95 wt % of a first surfactant which is selected from derivatives of alkyl polyglucosides and mixtures thereof; and (b) from 5 to 95 wt % of a second surfactant which is selected from: amphoteric surfactants, cationic surfactants, anionic surfactants, non-ionic surfactants, and mixtures thereof. This surfactant composition may be used to generate foam that is used for unloading a liquid from a hydrocarbon reservoir. It may be that the liquid unloading of foam generated using the surfactant composition is greater than that of foam generated from the first and second surfactants when they are foamed individually.
本发明提供了一种增效表面活性剂组合物,该组合物包括:(a) 5 至 95 wt % 的第一种表面活性剂,该表面活性剂选自烷基
多糖苷的衍
生物及其混合物;(b) 5 至 95 wt % 的第二种表面活性剂,该表面活性剂选自两性表面活性剂、
阳离子表面活性剂、阴离子表面活性剂、非离子表面活性剂及其混合物。这种表面活性剂组合物可用来产生泡沫,用于从碳氢化合物储层中卸载液体。使用该表面活性剂组合物产生的泡沫的液体卸载能力可能大于第一种和第二种表面活性剂单独发泡产生的泡沫。