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Abstract <p>The authors have theoretically substantiated and experimentally tested the method of determining permeability of discontinuities as function of stresses in rock masses and reservoirs of quasi-regular layered deformation structure when fluid flows across the strike of the discontinuities. A linear model produces an analytical solution of a problem on stationary fluid flow in media with discontinuities, which allows finding the permeability&#xa0;<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(k_{J}\)</EquationSource> </InlineEquation>&#xa0;of the latter by the recorded flow rate. The tests are carried out using samples of sandstone blocks and a dependence is obtained for the interblock space opening <i>h</i> and the normal stress <i>s</i>. A lab-scale testing plant is proposed for the permeability tests with the coincident directions of compression and fluid flow. As a result of the experiments on gas flow in block samples subjected to normal loading, an empirical dependence is found for the specific discontinuity permeability&#xa0;<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(k_{J}/h\)</EquationSource> </InlineEquation>&#xa0;and the stress <i>s</i>, which can be approximated by a two-parameter fractional rational function.</p>

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Mass-Transfer in Rock Mass with Contrasting Permeability: Theory and Laboratory Experiment

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • L. A. Nazarova,
  • L. A. Nazarov,
  • A. A. Skulkin

摘要

Abstract

The authors have theoretically substantiated and experimentally tested the method of determining permeability of discontinuities as function of stresses in rock masses and reservoirs of quasi-regular layered deformation structure when fluid flows across the strike of the discontinuities. A linear model produces an analytical solution of a problem on stationary fluid flow in media with discontinuities, which allows finding the permeability  \(k_{J}\)  of the latter by the recorded flow rate. The tests are carried out using samples of sandstone blocks and a dependence is obtained for the interblock space opening h and the normal stress s. A lab-scale testing plant is proposed for the permeability tests with the coincident directions of compression and fluid flow. As a result of the experiments on gas flow in block samples subjected to normal loading, an empirical dependence is found for the specific discontinuity permeability  \(k_{J}/h\)  and the stress s, which can be approximated by a two-parameter fractional rational function.