HPAM和AM-AMPS与水溶性酚醛树脂的成胶规律研究  

Study on the gelling law of HPAM and AM-AMPS with water-soluble phenolic resin

作　　者：李紫薇 LI Ziwei(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009

出　　处：《复杂油气藏》2024年第2期238-245,共8页Complex Hydrocarbon Reservoirs

摘　　要：在110℃、水中盐含量12124 mg/L条件下,从成胶时间、冻胶强度和冻胶稳定性三个方面研究了HPAM、AM-AMPS(AMPS质量分数30%)与水溶性酚醛树脂的成胶规律。结果表明,成胶规律与聚合物、交联剂用量及聚合物分子结构有关。当成胶液中聚合物和交联剂用量相同时,HPAM成胶时间明显低于AM-AMPS而冻胶强度高于AM-AMPS;不同聚合物与水溶性酚醛树脂形成的冻胶均存在早期脱水现象,AM-AMPS形成的酚醛树脂冻胶长期热稳定性比HPAM差。冷冻扫描电镜(Cryo-SEM)分析表明,交联密度是影响冻胶强度和稳定性的重要因素;X射线光电子能谱(XPS)和红外光谱(IR)分析表明,氧化降解是酚醛树脂冻胶早期脱水的主要原因,少量添加对苯二酚可以稳定冻胶结构。研究结果可为高温冻胶的开发提供指导。Under the conditions of 110°C and 12,124 mg/L salt content in water,the gelation laws of HPAM,AM-AMPS(AMPS content 30%),and water-soluble phenolic resin were studied from the three aspects:gelling time,gelling strength and gelling stability.The results show that the gelation law is related to the amount of polymer,cross-linking agent,and the polymer's molecular structure.When the amount of polymer and cross-linking agent in the gellant is the same,the gelation time of HPAM is significantly lower than that of AM-AMPS,and the gel strength is higher than that of AM-AMPS.The gel formed by different polymers and water-soluble phenolic resins all had the phenomenon of early dehydration,the long-term thermal stability of the phenolic resin gel formed by AM AMPS is worse than that of HPAM.Cryo-scanning electron microscope(Cryo-SEM)analysis shows that the cross-link density is an important factor affecting the strength and stability of the gel;X-ray photoelectron spectroscopy(XPS)and Infrared spectroscopy(IR)analysis show that the oxidative degradation of the gel causes the early dehydration of the phenolic resin gel.Adding a small amount of hydroquinone to the gellant can significantly improve the stability of the phenolic resin gel.The research results can guide the development of high-temperature gel.

关 键 词：酚醛冻胶 HPAM AM-AMPS 成胶规律 脱水 

分 类 号：TE39[石油与天然气工程—油气田开发工程]