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Effect of Effective Pressure on the Permeability of Rocks Based on Well Testing Results

Author

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  • Evgenii Vasilevich Kozhevnikov

    (Department of Oil and Gas Technologies, Perm National Research Polytechnic University, Perm 614990, Russia)

  • Mikhail Sergeevich Turbakov

    (Department of Oil and Gas Technologies, Perm National Research Polytechnic University, Perm 614990, Russia)

  • Evgenii Pavlovich Riabokon

    (Department of Oil and Gas Technologies, Perm National Research Polytechnic University, Perm 614990, Russia)

  • Vladimir Valerevich Poplygin

    (Department of Oil and Gas Technologies, Perm National Research Polytechnic University, Perm 614990, Russia)

Abstract

During the development of oil and gas fields, the permeability of the reservoirs decreases due to a decrease in reservoir pressure and an increase in effective pressure, as a result of which significant reserves of oil and gas remain in the reservoir. To predict the rate of decrease in oil production rates during field development and to respond quickly, it is necessary to know the law of permeability decrease with an increase in effective pressure. Existing methods for describing the change in the permeability of rocks were analyzed in the paper. Numerical analysis of the results of core studies from previously published papers and the results of field well testing on the examples of the north Perm region oil fields showed that in both cases, regardless of the type of rock and the type of reservoir, the change in permeability can be described by the same equations (exponential and power-law). Obtained equations can be used to predict changes in the permeability of terrigenous reservoirs of the north Perm region oil fields. At the same time, according to the results of well testing, an intensive decrease in permeability is observed with an increase in effective pressure. Analysis of the nature of permeability changes using the Two-Part Hooke’s Model showed that significant irreversible deformations are currently taking place in the formations of the oil fields under consideration. Predicting the change in permeability from effective pressure can allow to optimize the development of oil deposits.

Suggested Citation

  • Evgenii Vasilevich Kozhevnikov & Mikhail Sergeevich Turbakov & Evgenii Pavlovich Riabokon & Vladimir Valerevich Poplygin, 2021. "Effect of Effective Pressure on the Permeability of Rocks Based on Well Testing Results," Energies, MDPI, vol. 14(8), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2306-:d:539182
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    References listed on IDEAS

    as
    1. Yongfei Yang & Zhihui Liu & Zhixue Sun & Senyou An & Wenjie Zhang & Pengfei Liu & Jun Yao & Jingsheng Ma, 2017. "Research on Stress Sensitivity of Fractured Carbonate Reservoirs Based on CT Technology," Energies, MDPI, vol. 10(11), pages 1-15, November.
    2. Mikhail Guzev & Evgenii Riabokon & Mikhail Turbakov & Evgenii Kozhevnikov & Vladimir Poplygin, 2020. "Modelling of the Dynamic Young’s Modulus of a Sedimentary Rock Subjected to Nonstationary Loading," Energies, MDPI, vol. 13(23), pages 1-12, December.
    3. Junjie Ren & Ping Guo, 2014. "A New Mathematical Model for Pressure Transient Analysis in Stress-Sensitive Reservoirs," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-14, April.
    4. Mikhail Guzev & Evgenii Kozhevnikov & Mikhail Turbakov & Evgenii Riabokon & Vladimir Poplygin, 2020. "Experimental Studies of the Influence of Dynamic Loading on the Elastic Properties of Sandstone," Energies, MDPI, vol. 13(23), pages 1-14, November.
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    Cited by:

    1. Mikhail S. Turbakov & Evgenii V. Kozhevnikov & Evgenii P. Riabokon & Evgeniy A. Gladkikh & Vladimir V. Poplygin & Mikhail A. Guzev & Hongwen Jing, 2022. "Permeability Evolution of Porous Sandstone in the Initial Period of Oil Production: Comparison of Well Test and Coreflooding Data," Energies, MDPI, vol. 15(17), pages 1-13, August.
    2. Vladimir Valerievych Poplygin & Irina Sergeevna Poplygina & Viktor Antonovich Mordvinov, 2022. "Influence of Reservoir Properties on the Velocity of Water Movement from Injection to Production Well," Energies, MDPI, vol. 15(20), pages 1-14, October.
    3. Evgenii Kozhevnikov & Evgenii Riabokon & Mikhail Turbakov, 2021. "A Model of Reservoir Permeability Evolution during Oil Production," Energies, MDPI, vol. 14(9), pages 1-16, May.
    4. Evgenii V. Kozhevnikov & Mikhail S. Turbakov & Evgenii A. Gladkikh & Evgenii P. Riabokon & Vladimir V. Poplygin & Mikhail A. Guzev & Chengzhi Qi & Artem A. Kunitskikh, 2022. "Colloid Migration as a Reason for Porous Sandstone Permeability Degradation during Coreflooding," Energies, MDPI, vol. 15(8), pages 1-17, April.

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