耐高温型泡沫剂的制备及应用研究

Study on Application of High Temperature Resistant Foaming Agent Formula

作为油藏三次开发的最有前景和最常用方法之一,泡沫调驱具有调剖和驱油的双重作用,可以实现边调剖边驱油的功能。而针对高温油藏实施泡沫驱则需要耐高温泡沫体系。因此本文从耐温性泡沫剂入手,室内对比了五种发泡剂,筛选出了三种耐高温泡沫剂,并对其中两种泡沫剂进行复配优化,根据不同配比下的复配发泡体系在高温老化前后的发泡效果筛选出了以α-烯基磺酸钠为主要成分的最佳复配体系。实验结果表明,两种发泡剂具有一定的协同作用,在120℃,48 h高温老化前后该复配泡沫体系的发泡性能无明显降低,说明该发泡体系具备用于高温油藏驱油的条件。

As one of the most promising and commonly used methods in the three reservoir developments, foamprofile control has the dual functions of profile control and oil displacement, and can realize the function of profilecontrol and oil displacement. However, the implementation of foam flooding for high-temperature reservoirs requires ahigh-temperature resistant foam system. Therefore, starting with the temperature-resistant foaming agent, five kinds offoaming agents were compared indoors. Three high-temperature-resistant foaming agents were screened out, and two ofthem were optimized for compounding. The foaming effect of the system before and after high temperature aging hasbeen selected out the best compounding system was the one with α-alkenyl sulfonate as the main component. Theexperimental results show that the two foaming agents have a certain synergistic effect. The foaming performance of thecompound foam system before and after aging at 120 ℃ and 48 hours at high temperature does not decreasesignificantly, indicating that the foaming system is suitable for high-temperature reservoir flooding.