一种感温型凝胶暂堵剂颗粒的制备与性能研究  

Preparation and properties of a temperature sensitive temporary plugging agent gel particles

作　　者：赵文锦 张定军[1,2] 吴彦飞 鲜彦博 陈振斌[1,2] ZHAO Wen-jin;ZHANG Ding-jun;WU Yan-fei;XIAN Yan-bo;CHEN Zhen-bin(College of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《应用化工》2020年第6期1354-1358,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51663013)。

摘　　要：以丙烯酰胺、丙烯酸为共聚单体,过硫酸钾为自由基引发剂,采用微流体技术及物理包覆方法,制备了包覆海藻酸钠疏水膜的PAM基暂堵剂凝胶颗粒P(AA-AM)@SA,利用傅里叶变换红外光谱(FTIR)、数码照片、热重分析仪(TGA)对其进行了表征,研究了不同制备条件下暂堵剂的吸水溶胀性能、暂堵性能。结果表明,感温型P(AA-AM)@SA暂堵剂凝胶颗粒在模拟地层环境条件下能够实现“调而不堵,堵而不死”的要求。当海藻酸钠(SA)浓度为2%时,暂堵剂的吸水性能最佳,且有一定的耐盐能力、热稳定性。Using acrylamide(AM),acrylic acid(AA)as copolymer monomer and potassium persulfate(K2S2O8)as radical initiator,PAM based temporary plugging agent P(AA-AM)@SA coated sodium alginate hydrophobic film was prepared by microfluidic technology and physical coating method.The structure,morphology and thermostability of the P(AA-AM)@SA were characterized by means of FTIR,digital photograph and TGA.The water absorption and swelling properties of temporary plugging agents were studied under different preparation conditions.The results show that the temperature-sensitive P(AA-AM)@SA temporary plugging agent gel particles were prepared,and the requirements of“adjusting without plugging,plugging without dying”were achieved under simulated formation environment conditions.When the concentration of sodium alginate(SA)was 2%,the temporary plugging agent had the best water absorption performance,and the gel particles had a certain salt tolerance,and thermal stability.

关 键 词：PAM基暂堵剂 海藻酸钠 吸水倍率 微流体技术 

分 类 号：TQ2[化学工程—有机化工] TQ3