日用化学工业（中英文）2025，Vol.55Issue(12)：1560-1566,7.DOI:10.3969/j.issn.2097-2806.2025.12.008
耐高温海水基植物胶压裂液交联动力学及其交联机理研究
Study on the mechanism and kinetics of crosslinking in high-temperature-resistant seawater-based plant gum fracturing fluid
摘要
Abstract
To meet the application requirements of seawater-based fracturing fluid for delayed crosslinking and high temperature resistance,a series of seawater-based fracturing fluids applicable in different temperature range were formulated by optimizing the ratios among salt-resistant guar gum,high-temperature crosslinking agent,etc.,achieving controllable crosslinking time at low pH and a maximum temperature resistance of 180℃.The crosslinking process of fracturing fluids was tested through steady-state shear rheological experiments,and a 4-parameter rheological kinetic equation was used to fit the data.The effects of crosslinking agent concentration,chelating agent concentration,shear rate,and temperature on the crosslinking process were analyzed.Both increasing the concentration of crosslinking agent and increasing the crosslinking temperature could accelerate the crosslinking process and enhance the strength of the crosslinking system;there were optimal ranges for both shear rate and chelating agent dosage in the crosslinking process.The crosslinking mechanism was further analyzed by measuring the microstructure of cross-linked gel and the elemental content during the crosslinking process.The difference in particle size and the different coordination number between boron and zirconium in crosslinking agents could affect crosslinking time and gel network structure,achieving delayed crosslinking,high crosslinking strength at low temperature,and improved temperature resistance through secondary crosslinking for seawater-based fracturing fluids.关键词
海水基压裂液/耐高温/高温交联剂/交联动力学/交联机理Key words
seawater-based fracturing fluid/high-temperature resistance/high-temperature crosslinking agent/crosslinking kinetics/crosslinking mechanism分类
能源科技引用本文复制引用
赵健,郭布民,申金伟,王黎,许田鹏,鲍文辉..耐高温海水基植物胶压裂液交联动力学及其交联机理研究[J].日用化学工业（中英文）,2025,55(12):1560-1566,7.基金项目
中国海洋石油集团有限公司"十四五"科技重大专项:海上低渗透及潜山油气田有效开发技术(KJGG2022) （KJGG2022）
海上大型压裂工程技术(KJGG2022-0704) （KJGG2022-0704）
