抗高温泡沫排水用起泡剂的研究与性能评价

Research and performance evaluation of a high temperature resistant foaming agent for drainage

关键词:  泡沫排水  积液  起泡剂  高温

Key words:  foam drainage  liquid loading  foaming agent  high temperature

摘要:

以分子结构上含有磺酸基团、主链碳链较长的甜菜碱为主要成分,复配少量具有协同作用的直链烷烃磺酸盐,研制出了一种抗高温起泡剂。该起泡剂能显著降低地层水的表(界)面张力,具有良好的表面活性,利于泡沫产生,且起泡能力、泡沫稳定性以及携液能力均较好,在150℃下具有良好的热稳定性,表现出了较强的抗高温能力。采用高温气井泡沫排水室内模拟实验装置,较真实地模拟了高温气井的泡沫排水过程,评价了该起泡剂在150℃下的泡沫动态性能。模拟实验结果表明:该起泡剂在150℃下仍具有良好的泡沫携液能力。

Abstract:

Taking the betaine of molecular structure containing sulfonic acid groups and longer main carbon chain as the main component,compounded with a small amount of straight chain paraffin sulphonate having synergistic active effect,a high temperature foaming agent was developed.The foaming agent can significantly reduce the surface tension and interfacial tension of the formation water,and has good surface activity being favor of foaming.The foamability,foam stability and carrying liquid ability of foaming agent are all preferable,it has good thermal stability at 150 ℃,and shows a strong resistance ability to high temperature.The lab simulation experiment device with high temperature gas well foaming agent for drainage can simulate high temperature gas well foam drainage process factually.The experiment evaluated the foam dynamic performance of foaming agent at 150℃.The simulation results show that the foaming agent still has good liquid carrying capacity at 150℃.