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Abstract <p>The development of hydrocarbon deposits is accompanied by the construction of exploration and production wells. In this case, more than 70% of the drilling volume falls on ecologically vulnerable areas of the cryolithozone with limited self-cleaning ability and weak protective properties. During the disposal of drilling waste, their interaction with permafrost rocks and behavior during multiple freeze–thaw cycles under the conditions of the Far North have not been sufficiently studied and remain relevant. To assess the dynamics of changes in ion concentrations during multiple freeze–thaw cycles, a chemical analysis has been carried out to determine the concentration of several toxic metal ions, taking the normative indicators of the maximum permissible concentrations of elements in water (MPCs) into account. It is shown that in some cases the MPCs of drilling waste decrease significantly.</p>

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The Behavior of Dissolved Metals during the Disposal of Drilling Mud Waste in the Permafrost Zone

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • E. A. Danchenko,
  • A. Yu. Bychkov,
  • V. Z. Khilimonyuk,
  • E. V. Safronov,
  • V. G. Cheverev

摘要

Abstract

The development of hydrocarbon deposits is accompanied by the construction of exploration and production wells. In this case, more than 70% of the drilling volume falls on ecologically vulnerable areas of the cryolithozone with limited self-cleaning ability and weak protective properties. During the disposal of drilling waste, their interaction with permafrost rocks and behavior during multiple freeze–thaw cycles under the conditions of the Far North have not been sufficiently studied and remain relevant. To assess the dynamics of changes in ion concentrations during multiple freeze–thaw cycles, a chemical analysis has been carried out to determine the concentration of several toxic metal ions, taking the normative indicators of the maximum permissible concentrations of elements in water (MPCs) into account. It is shown that in some cases the MPCs of drilling waste decrease significantly.