VALIDATION EXPERIMENTS IN LABORATORY ON HIGH VISCOSITY FLUID INJECTION TEST TO CHARACTERIZE FRACTURE PROPERTIES

DOI

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Other Title
  • 高粘性流体の注入による割れ目の特性評価法の室内試験での実証

Abstract

 We proposed high-viscosity fluid injection tests to evaluate flow dimension and porosity in fractures. Experiments were conducted to evaluate the method by injecting high-viscosity methylcellulose solution at a constant rate into stainless steel tubing and model fractures. In stainless steel tube experiments, injection pressure increased linearly with time and the pressure gradient was dependent on tube diameter. In model fractures, injection pressure increased logarithmically with time and the pressure gradient was controlled by fracture width. Changes of tube diameter and fracture width could be estimated from the derivative of the pressure. High-viscosity fluid injection tests were able to identify the flow dimension (e. g. one- and two-dimensional flow) and quantify features controlling porosity, such as tube diameter and fracture width. Our results confirm the applicability of high-viscosity fluid injection tests to determine fracture properties in laboratory experiments.

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Details 詳細情報について

  • CRID
    1390282680332367616
  • NII Article ID
    130005071441
  • DOI
    10.2208/jscejge.71.55
  • ISSN
    21856516
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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