Huimin Dai, Jian Lan, Zou He, Liyin Zhang, Ying Xiong, Shanshan Dai
{"title":"Preparation and Performance of Shear-Resistant and Fast-Dissolving Drag Reduction With Multiple Cross-Linking Effects","authors":"Huimin Dai, Jian Lan, Zou He, Liyin Zhang, Ying Xiong, Shanshan Dai","doi":"10.1002/app.56667","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The development of shear-resistant drag reducer agent (DRA) is crucial for enhancing oil recovery, especially during high-speed pumping and fracturing processes where polymer networks are prone to damage, leading to the reduction of the drag reduction (DR) performance. To address this issue, the introduction of nano-silica into the polymer structure, while maintaining good DR, endows the DRA with better shear resistance and salt resistance through its unique cross-linking mode. In this study, a novel shear-resistant and fast-dissolving drag reducer was synthesized through free-radical polymerization using acrylamide (AM), acrylic acid (AA), 2-acrylamide-2-methylpropyl sulfonic acid (AMPS) and KH570 modified nano-silica. The comprehensive properties of drag reducer were studied using conductivity and dissolution time test, microscopic morphology analysis, thermogravimetric analysis, and rheological test. The results suggestion that the PAPO-10@SiO<sub>2</sub> exhibits outstanding characteristics, including rapid dissolution (4 min), excellent salt resistance (DR rate up to 80.41% at a polymer concentration of 500 mg/L) and nano-silica concentration of 1.5 wt%. Moreover, the mechanism of drag reduction was proposed that nano-silica connects the molecular chains through multiple cross-linking effects of chemical cross-linking and physical adsorption, which enhances the stability of the network structure and prevents the destruction of the molecular chain structure by shear force effectively (viscosity retention of 76.9% after shearing for 40 min at 90°C and 170 s<sup>−1</sup>). In summary, this study provides valuable insights for developing polymers with both shear resistance and dissolution properties in aqueous solutions.</p>\n </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"142 13","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/app.56667","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
The development of shear-resistant drag reducer agent (DRA) is crucial for enhancing oil recovery, especially during high-speed pumping and fracturing processes where polymer networks are prone to damage, leading to the reduction of the drag reduction (DR) performance. To address this issue, the introduction of nano-silica into the polymer structure, while maintaining good DR, endows the DRA with better shear resistance and salt resistance through its unique cross-linking mode. In this study, a novel shear-resistant and fast-dissolving drag reducer was synthesized through free-radical polymerization using acrylamide (AM), acrylic acid (AA), 2-acrylamide-2-methylpropyl sulfonic acid (AMPS) and KH570 modified nano-silica. The comprehensive properties of drag reducer were studied using conductivity and dissolution time test, microscopic morphology analysis, thermogravimetric analysis, and rheological test. The results suggestion that the PAPO-10@SiO2 exhibits outstanding characteristics, including rapid dissolution (4 min), excellent salt resistance (DR rate up to 80.41% at a polymer concentration of 500 mg/L) and nano-silica concentration of 1.5 wt%. Moreover, the mechanism of drag reduction was proposed that nano-silica connects the molecular chains through multiple cross-linking effects of chemical cross-linking and physical adsorption, which enhances the stability of the network structure and prevents the destruction of the molecular chain structure by shear force effectively (viscosity retention of 76.9% after shearing for 40 min at 90°C and 170 s−1). In summary, this study provides valuable insights for developing polymers with both shear resistance and dissolution properties in aqueous solutions.
期刊介绍:
The Journal of Applied Polymer Science is the largest peer-reviewed publication in polymers, #3 by total citations, and features results with real-world impact on membranes, polysaccharides, and much more.