两性离子聚合物高分子修饰硅基纳米颗粒及其压裂增产应用研究  

Research on The Modification of Silicon-based Nanoparticles with Amphiphilic Polymers and Application in Hydraulic Fracturing for Increased Production

作　　者：孙冬 杨开利 丁倩 张小凤 延树龙 孙宇 SUN Dong;YANG Kaili;DING Qian;ZHANG Xiaofeng;YAN Shulong;SUN Yu(Yanchang Gas Field Production Plant Two,Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Yulin 719000,Shaanxi)

机构地区：[1]陕西延长石油(集团)有限责任公司延长气田采气二厂,陕西榆林719000

出　　处：《合成化学》2025年第3期166-176,共11页Chinese Journal of Synthetic Chemistry

基　　金：延969井区低产低效井提高产能技术研究(ycsy2024jcyj-C-02)。

摘　　要：随着油气勘探开发的不断深入,油气藏开采环境越发复杂,压裂增产作业施工对工作液体系性能提出了更高的要求。以丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)、对苯乙烯磺酸钠(SSS)、二甲基二烯丙基氯化铵(DMDAAC)为聚合单体,加之硅基纳米颗粒,通过水溶液聚合法实现了两性离子聚合物高分子修饰硅基纳米颗粒Poly-SiO_(2)-t的设计合成,并通过单因素实验方法建立了Poly-SiO_(2)-t的制备关键技术参数。首先,采用红外光谱分析、扫描电子显微镜分析、热综合分析方法对Poly-SiO_(2)-t的化学结构、微观形态、热稳定性等进行了深入研究,其化学结构符合预期设计,水溶液呈孔洞分布均匀的三维网状结构,且热稳定性良好,聚合物分子链中官能团的起始分解温度约为252.84℃。其次,深入探讨了Poly-SiO_(2)-t的溶解、增黏、耐温及抗盐性能,室温条件下0.5%(质量百分数,下同)Poly-SiO_(2)-t溶液的表观黏度为152 mPa·s,耐温抗盐性能优良。最后,探究了Poly-SiO_(2)-t作为压裂液稠化剂的应用性能,包括压裂液的流变、黏弹、携砂、静态滤失和破胶性能,研究结果显示:压裂液各项性能均满足行业标准要求,具有较大的应用潜力。With the continuous deepening of oil and gas exploration and development,the extraction environment of oil and gas reservoirs has become increasingly complex,and fracturing operations have put forward higher requirements for the performance of their working fluid.During this study,the acrylamide(AM),2-acrylamide-2-methylpropanesulfonic acid(AMPS),sodium p-styrene sulfonate(SSS),and dimethyldiallylammonium chloride(DMDAAC)as polymerization monomers,combined with silicon-based nanoparticles,the design and synthesis of silicon-based nanoparticles with amphiphilic polymers Poly-SiO_(2)-t were achieved through aqueous solution polymerization,and the key technical parameters for the preparation of Poly-SiO_(2)-t were established through single factor experimental methods.Firstly,the chemical structure,microstructure and thermal stability of thickener Poly-SiO_(2)-t were thoroughly studied by the methods of infrared spectroscopy analysis,scanning electron microscopy analysis and thermal comprehensive analysis.As a result,the chemical structure of the thickener Poly-SiO_(2)-t meets the expected design,the aqueous solution exhibited a three-dimensional network structure with uniform pore distribution and good thermal stability,the initial decomposition temperature of functional groups in polymer molecular chains is approximately 252.84℃.Secondly,the dissolution,viscosity enhancement,temperature resistance,and salt resistance of the nanoparticle/amphoteric polymer thickener Poly-SiO_(2)-t were investigated.The apparent viscosity of a 0.5%(mass percentage,the same below)Poly-SiO_(2)-t solution at room temperature was 152 mPa·s,moreover,the results indicate that the thickener Poly-SiO_(2)-t with excellent temperature and salt resistance.Finally,the rheological,viscoelastic,sand carrying,static filtration and gel breaking properties of the thickener Poly-SiO_(2)-t prepared fracturing fluid were investigated.The research results showed that all properties of the fracturing fluid meet industry standards and had great applica

关 键 词：高分子化学 两性离子聚合物 硅基纳米颗粒 压裂增产应用 黏弹性 破胶性能 

分 类 号：TQ314.2[化学工程—高聚物工业]