钻井液与完井液2023，Vol.40Issue(5)：678-684,7.DOI:10.12358/j.issn.1001-5620.2023.05.019
增黏助排一体化聚合物分散液制备及性能评价
Preparation and Properties of Viscosification and Drainage Integrated Polymer Dispersion
摘要
Abstract
Rapid dissolution and salt-tolerance polymers are the key products for effective utilization of highly mineralized formation water and backflow water.The integration of viscosification and drainage is the main research direction of thickeners.A weak hydrophobic association polymer was designed and synthesized,and an integrated dispersing fluid with the properties of viscosification and drainage was optimized.The overall performance of fracturing fluid was evaluated.The polymer dispersion can meet the online preparation requirements using 194 557.93 mg/L ultra-high mineralized water,and the viscosity can be adjusted from 2 to 106 mPa·s when the amount of salt-resistant thickener was 0.1-1.2%.The surface tension of breaking fluid was less than 27 mN/m when the amount of dispersion was greater than 0.4%.At 90℃,under shearing for 1h,the viscosity of the integrated fracturing fluid was greater than 50 mPa·s.The viscosity of 1.0%polymer dispersion was about 4 mPa·s under 80℃water bath for 2 h.When the amount of polymer dispersion was 0.1%,the drag reduction rate of fracturing fluid was greater than 65%.The polymer dispersion can meet the requirements of mixing ultra-high salinity formation water and flowback fluid,realize the integration of online viscosity change and drainage,greatly reduce the cost of fracturing fluid,and simplify the on-site liquid mixing process,so it has a wide application prospect.关键词
超高矿化度/耐盐压裂液/聚合物分散液/助排/一体化Key words
Ultra-high salinity/Salt-tolerance fracturing fluid/Polymer dispersion/Drainage/Integration分类
能源科技引用本文复制引用
林海,张成娟,赵文凯,万有余,王志晟,郭得龙,王金冉,贾文峰..增黏助排一体化聚合物分散液制备及性能评价[J].钻井液与完井液,2023,40(5):678-684,7.基金项目
中国石油集团科研攻关项目"柴达木盆地页岩油勘探开发理论与关键技术研究"(2021DJ1808) （2021DJ1808）
中石油-中国石油大学(北京)战略合作项目"准葛尔盆地玛湖中下组合和吉木萨尔陆相页岩油高效勘探开发理论与关键技术研究"(ZLZX2020-01). （北京）
