摘要
以胍胶为降阻剂,考察了使用浓度、流动状态、离子类型及粘度对降阻性能的影响,采用FENE-P模型模拟及中、低雷诺数实验分析降阻机理。结果表明,胍胶浓度为1000~3000 mg/L时降阻效果最佳,溶液粘度是影响胍胶降阻性能的主要因素;一定浓度范围内符合Virk有效滑移假说;胍胶主要在层流湍流过渡区通过抑制涡流产生与发展过程实现降阻作用;近壁结构受静电吸附作用影响,阳离子型胍胶降阻效果优于其他离子类型胍胶。
Taking guanidine gum as a resistance reducing agent,the effects of concentration,flow state,ion type and viscosity on the resistance reduction performance were investigated.The FENE-P model simulation and medium and low Reynolds number experiments were used to analyze the mechanism of drag reduction.The results show that the viscosity reduction effect was the best when the concentration of guanidine gum was 1000~3000 mg/L.The viscosity of the solution was the main factor affecting the resistance reduction of guanidine gum;the Virk effective slip hypothesis was match within a certain concentration range;the guanidine gum mainly effect in the laminar turbulent transition zone to reduce the resistance by suppressing the generation and development of eddy currents;the near-wall structure was affected by the electrostatic adsorption,and the cationic guanidine gums was better than other ion-type guanidine gums.
作者
张春雨
吴家全
王桂珠
郭丽梅
ZHANG Chun-yu;WU Jia-quan;WANG Gui-zhu;GUO Li-mei(College of Chemical Engineering and Materials Science,Tianjin University of Science&Technology,Tianjin 300457,China)
出处
《应用化工》
CAS
CSCD
北大核心
2020年第1期63-66,共4页
Applied Chemical Industry
基金
国家科技重大专项课题(2017ZX05023003)
关键词
胍胶
降阻
压裂液
线性大分子
guanidine gum
drag reduction
fracturing fluid
linear macromolecule
