核壳结构抗剪切驱油剂的合成及性能测试  

Synthesis and properties of core-shell structure shear resistance oil displacing agent

作　　者：曹孟菁[1,2] 朱维耀 郭光范[1] 杨金尧 CAO Meng-jing;ZHU Wei-yao;GUO Guang-fan;YANG Jin-yao(School of Petroleum Engineering,Chengde Petroleum College,Chengde Hebei 067000,China;School of Civil and Resources Engineering,University of Science and Technology of Beijing,Beijing 100083,China;School of Chemical Engineering,Chengde Petroleum College,Chengde Hebei 067000 China)

机构地区：[1]承德石油高等专科学校石油工程系,河北承德067000 [2]北京科技大学土木与资源工程学院,北京100083 [3]承德石油高等专科学校化学工程系,河北承德067000

出　　处：《化学研究与应用》2023年第7期1739-1745,共7页Chemical Research and Application

基　　金：河北省高等学校科学技术研究项目(ZD2018238)资助;承德市科学技术研究与发展计划项目(202103B010)资助。

摘　　要：目前聚合物溶液作为驱油剂在注入过程中,由于受到高速剪切降解作用的影响,导致溶液粘度大幅下降,影响了聚合物溶液的性能。本文通过调控有机单体质量比,合成出了粘度可调控的核壳结构聚合物微球,采用TEM、红外、粘度计等分析手段对合成的核壳结构聚合物微球进行表征,同时对其增粘性、抗剪切性、抗盐性和粘温性进行了研究。表征结果显示,合成的核壳结构聚合物微球具有良好的分散性和均一性。实验结果表明,有机单体质量比为7∶3时,合成的核壳结构聚合物微球具有良好的增粘性能。剪切速率从3500r/min到11500r/min,聚合物的粘度保留率均在82%以上。温度从20℃上升到60℃时,其聚合物粘度保留率最大可达91%,表现出良好的抗温能力。盐浓度为10000mg/L时,合成出的核壳结构聚合物微球粘度保留率远高于非核壳结构聚合物微球溶液的粘度,表现出良好的抗盐能力。本产品具有良好的市场应用前景。At present,polymer solution as a displacement agent in the injection process,due to the effect of high speed shear degra-dation,resulting in a large decrease in the viscosity of the solution,affecting the performance of the polymer solution.By adjusting the mass ratio of organic monomers,the core-shell polymer microspheres with controllable viscosity were synthesized.The core-shell polymer microspheres were characterized by TEM,infrared and viscometer.The characterization results showed that the synthesized core-shell polymer microspheres had good dispersion and uniformity.The experimental results showed that when the mass ratio of or-ganic monomer was 7∶3,the core-shell polymer microspheres had good viscosity increasing ability.The shear rate ranges from 3500r/min to 11500r/min,and the viscosity retention rate of the polymer is above 82%.When the temperature rises from 20℃to 60℃,the maximum viscosity retention rate of the polymer can reach 91%,showing good temperature resistance.When the salt con-centration was 10000mg/L,the viscosity retention rate of the synthesized core-shell polymer microspheres was much higher than that of the non-core-shell polymer microspheres,showing good salt resistance.The product has a good market application prospect.

关 键 词：核壳结构 抗剪切性 驱油剂 纳米二氧化硅 耐温性 

分 类 号：O632.12[理学—高分子化学]