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<p>The rheological properties of grouting slurry are highly sensitive to temperature conventional grouting schemes inadequate for high-temperature formations. Therefore, understanding grouting behavior in porous media under temperature influence is crucial. This study introduces an innovative grouting simulation platform that effectively replicates the impact of formation temperature. First, the time-dependent viscosity of the slurry at different temperatures is characterized. Quartz sand with two distinct particle size ranges is used to simulate the porous medium. A series of grouting experiments is then conducted. The results systematically reveal the influence of temperature on the grouting pressure and diffusion behavior of cement–sodium silicate (C–S) slurry and cement slurry. The results show that (1) Higher temperatures significantly accelerate the progression of grouting pressure buildup and slurry diffusion evolution in C–S slurry, leading to a sharp grouting pressure increase and reduced injectability; the termination height decreases by up to 41.3%. (2) For cement slurry, the effects of temperature on grouting pressure and infiltration are minor. Its peak pressure remains significantly lower than that of C–S slurry, and the infiltration pattern remains largely consistent across different temperatures. (3) In high-temperature environments, C–S grouting requires precise control of pressure and slurry solidification rate. Temperature-control measures can be applied if necessary. To improve grouting effectiveness, borehole spacing should be shortened. This study offers valuable guidance for optimizing slurry selection and grouting construction strategies in different temperature environments.</p>

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Temperature Effect Study for Grouting in Porous Media Via a Novel Physical Simulation Approach

  • 期刊论文

  • 发表日期：

    2025年11月6日

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  • Zhenhao Xu,
  • Shengzhe Zhao,
  • Dongdong Pan,
  • Andong Hu,
  • Zehua Bu

摘要

The rheological properties of grouting slurry are highly sensitive to temperature conventional grouting schemes inadequate for high-temperature formations. Therefore, understanding grouting behavior in porous media under temperature influence is crucial. This study introduces an innovative grouting simulation platform that effectively replicates the impact of formation temperature. First, the time-dependent viscosity of the slurry at different temperatures is characterized. Quartz sand with two distinct particle size ranges is used to simulate the porous medium. A series of grouting experiments is then conducted. The results systematically reveal the influence of temperature on the grouting pressure and diffusion behavior of cement–sodium silicate (C–S) slurry and cement slurry. The results show that (1) Higher temperatures significantly accelerate the progression of grouting pressure buildup and slurry diffusion evolution in C–S slurry, leading to a sharp grouting pressure increase and reduced injectability; the termination height decreases by up to 41.3%. (2) For cement slurry, the effects of temperature on grouting pressure and infiltration are minor. Its peak pressure remains significantly lower than that of C–S slurry, and the infiltration pattern remains largely consistent across different temperatures. (3) In high-temperature environments, C–S grouting requires precise control of pressure and slurry solidification rate. Temperature-control measures can be applied if necessary. To improve grouting effectiveness, borehole spacing should be shortened. This study offers valuable guidance for optimizing slurry selection and grouting construction strategies in different temperature environments.