超声波辅助强氧化剂解除凝胶堵塞实验研究  

Experimental study of removing polymer gel plug using strong oxidants and ultrasonic waves

作　　者：李旭[1] 蒲春生[1] Nasir Khan 田晓玲 陈宁新 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555

出　　处：《应用化工》2017年第11期2126-2130,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51274229)

摘　　要：研究了超声波辅助强氧化剂对Cr^(3+)/HPAM凝胶体系解堵降粘的效果及机理。结果表明,超声波处理后,凝胶的降粘率可达99.95%,与强氧化剂单独降解相比,凝胶的交联节点更为疏松,空间层状密集结构受到了更严重的破坏,且Cr(Ⅲ)低聚物单体与聚丙烯酰胺单体显著增多,聚集体明显减少。模拟驱替实验中,超声波辅助强氧化剂解除凝胶堵塞作用明显,渗透率恢复率达到38.9%,超声波与强氧化剂间的协同作用对凝胶降解促进明显,具有实用性意义。The effect and mechanism of ultrasonic-assisted strong oxidant on Cr^(3+)/polyacrylamide gel system was investigated. The results show that the viscosity reduction rate of the gel is 99. 95% under the action of ultrasonic wave. Compared with the single degradation of the oxidant,the crosslinking node of the gel is more loose and the space stratified structure is more severely damaged and Cr( III) oligomer monomer and polyacrylamide monomer increased significantly,aggregates were significantly reduced. In the dynamic simulation experiment,the effect of ultrasonic-assisted strong oxidants on removing polymer gel plug was significant,and the recovery rate of permeability reached 38. 9%. It is shown that ultrasonic-assisted strong oxidants to remove gel plug is feasible,and the synergistic effect of ultrasound and strong oxidants promotes the degradation of gel.

关 键 词：凝胶降解 强氧化剂 超声波 协同作用 

分 类 号：TQ20[化学工程—有机化工] TQ427