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Utilization of CO 2 as cushion gas for porous media compressed air energy storage

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  • Curtis M. Oldenburg
  • Lehua Pan

Abstract

Porous media compressed air energy storage (PM‐CAES) and geologic carbon sequestration (GCS) can potentially be combined when CO 2 is used as the cushion gas. The large increase in density of CO 2 around its critical pressure at near‐critical temperature means that a PM‐CAES reservoir operated around the CO 2 critical pressure could potentially store more air (energy) for a given pressure rise in the reservoir. One‐dimensional (1D) radial TOUGH2 simulations of PM‐CAES with CO 2 as the cushion gas have been carried out to investigate pressurization and gas‐gas mixing effects. We find that pervasive pressure gradients in PM‐CAES make it desirable to position the air‐CO 2 interface close to the well, but cushion gas at such locations is subject to strong and undesirable air‐CO 2 mixing and subsequent production of CO 2 up the well. To avoid this negative effect, CO 2 cushion gas should be located at the far outer margins of storage reservoirs where mixing will be very slow. In such a configuration, the super‐compressibility of CO 2 will not be exploited, but CO 2 can be stored in the GCS context potentially earning significant value for the PM‐CAES project depending on the price of carbon. © 2013 Society of Chemical Industry and John Wiley & Sons, Ltd

Suggested Citation

  • Curtis M. Oldenburg & Lehua Pan, 2013. "Utilization of CO 2 as cushion gas for porous media compressed air energy storage," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 3(2), pages 124-135, April.
    • Handle: RePEc:wly:greenh:v:3:y:2013:i:2:p:124-135
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    Cited by:

    1. Li, Yi & Yu, Hao & Tang, Dong & Li, Yi & Zhang, Guijin & Liu, Yaning, 2022. "A comparison of compressed carbon dioxide energy storage and compressed air energy storage in aquifers using numerical methods," Renewable Energy, Elsevier, vol. 187(C), pages 1130-1153.
    2. Qin, Chao (Chris) & Loth, Eric, 2021. "Isothermal compressed wind energy storage using abandoned oil/gas wells or coal mines," Applied Energy, Elsevier, vol. 292(C).
    3. Li, Yi & Yu, Hao & Li, Yi & Liu, Yaning & Zhang, Guijin & Tang, Dong & Jiang, Zhongming, 2020. "Numerical study on the hydrodynamic and thermodynamic properties of compressed carbon dioxide energy storage in aquifers," Renewable Energy, Elsevier, vol. 151(C), pages 1318-1338.
    4. Guo, Chaobin & Zhang, Keni & Pan, Lehua & Cai, Zuansi & Li, Cai & Li, Yi, 2017. "Numerical investigation of a joint approach to thermal energy storage and compressed air energy storage in aquifers," Applied Energy, Elsevier, vol. 203(C), pages 948-958.
    5. Guo, Chaobin & Zhang, Keni & Li, Cai & Wang, Xiaoyu, 2016. "Modelling studies for influence factors of gas bubble in compressed air energy storage in aquifers," Energy, Elsevier, vol. 107(C), pages 48-59.
    6. Guo, Chaobin & Li, Cai & Zhang, Keni & Cai, Zuansi & Ma, Tianran & Maggi, Federico & Gan, Yixiang & El-Zein, Abbas & Pan, Zhejun & Shen, Luming, 2021. "The promise and challenges of utility-scale compressed air energy storage in aquifers," Applied Energy, Elsevier, vol. 286(C).

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