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<p>Consideration has been given to the possibility of using the technology of cyclic steam stimulation (CSS) of the bottom-hole formation zone with various attendant complications, such as the low permeability of the formation, the use of CSS in horizontal, subhorizontal, and inclined directional wells and in combination with the hydraulic fracturing of the formation, the high viscosity of oil, and the stratified inhomogeneity and compartmentalization of the formation. This issue is particularly relevant in view of the ever-increasing interest of subsoil users in developing fields of viscous and high-viscosity oil with described complications.</p><p>Using the analytical integral model that is based on thermal balance and is modified for solution of the optimization problem of use of CSS on horizontal wells, the authors have calculated the optimum time intervals of implementation of all the three CSS steps. In the course of numerical experiment, the optimum number of CSS cycles was established which allows the maximum effect from the use of this technology on the described model formation. Also, the numerical modeling has shown that the excessively high and excessively low number of CSS cycles has a negative effect on the efficiency of this technology.</p>

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Analysis of the Possibility of Developing Viscous and High-Viscosity Oil Fields That Is Accompanied by Attendant Complications with the Technology of Cyclic Steam Stimulation of the Bottom-Hole Formation Zone

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • A. O. Fedorov,
  • A. Ya. Gil’manov,
  • A. P. Shevelev

摘要

Consideration has been given to the possibility of using the technology of cyclic steam stimulation (CSS) of the bottom-hole formation zone with various attendant complications, such as the low permeability of the formation, the use of CSS in horizontal, subhorizontal, and inclined directional wells and in combination with the hydraulic fracturing of the formation, the high viscosity of oil, and the stratified inhomogeneity and compartmentalization of the formation. This issue is particularly relevant in view of the ever-increasing interest of subsoil users in developing fields of viscous and high-viscosity oil with described complications.

Using the analytical integral model that is based on thermal balance and is modified for solution of the optimization problem of use of CSS on horizontal wells, the authors have calculated the optimum time intervals of implementation of all the three CSS steps. In the course of numerical experiment, the optimum number of CSS cycles was established which allows the maximum effect from the use of this technology on the described model formation. Also, the numerical modeling has shown that the excessively high and excessively low number of CSS cycles has a negative effect on the efficiency of this technology.