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Material Balance Method and Dynamic Pressure Monitoring for Water-Bearing Gas Reservoirs with CO 2 Injection

Author

Listed:
  • Xiaohua Tan

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Jiajia Shi

    (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Dong Hui

    (PetroChina Southwest Oilfield Company, Chengdu 610500, China)

  • Qiu Li

    (PetroChina Southwest Oilfield Company, Chengdu 610500, China)

  • Tingting Wu

    (PetroChina Southwest Oilfield Company, Chengdu 610500, China)

Abstract

The storage of carbon dioxide by injecting carbon dioxide into gas reservoirs has become an important technique for achieving carbon capture, utilization, and storage. However, most studies have focused on tight gas reservoirs, and there are still few studies on the injection of carbon dioxide into water-bearing gas reservoirs. This paper analyzes the variation of reservoir pressure during CO 2 injection and points out the optimal amount of CO 2 injection in the reservoir, which can provide theoretical guidance in practical applications. The relationship is plotted between the formation pressure and the volume of injected carbon dioxide. The effects of reservoir inhomogeneity and the water content on the formation pressure are discussed. Dynamic monitoring of the formation pressure during carbon dioxide injection is achieved. The optimal volume of injected carbon dioxide for water-bearing gas reservoirs is determined. The results show that the formation pressure increases with an increase in the volume of injected carbon dioxide, and the curve exhibits a trend of steep increases at both ends and a gentle increase in the middle. Enhanced reservoir inhomogeneity and a low reservoir water content are favorable for carbon dioxide injection.

Suggested Citation

  • Xiaohua Tan & Jiajia Shi & Dong Hui & Qiu Li & Tingting Wu, 2023. "Material Balance Method and Dynamic Pressure Monitoring for Water-Bearing Gas Reservoirs with CO 2 Injection," Energies, MDPI, vol. 16(12), pages 1-14, June.
  • Handle: RePEc:gam:jeners:v:16:y:2023:i:12:p:4592-:d:1166704
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    References listed on IDEAS

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    1. Biagi, James & Agarwal, Ramesh & Zhang, Zheming, 2016. "Simulation and optimization of enhanced gas recovery utilizing CO2," Energy, Elsevier, vol. 94(C), pages 78-86.
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