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Study on Secondary Brine Drainage and Sand Control Technology of Salt Cavern Gas Storage

Author

Listed:
  • Yi Zhang

    (PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China)

  • Kun Zhang

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

  • Jun Li

    (PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China)

  • Yang Luo

    (Shixi Field Operation District, PetroChina, Xinjiang Oilfield Company, Karamay 834000, China)

  • Li-Na Ran

    (PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China)

  • Lian-Qi Sheng

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

  • Er-Dong Yao

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

Abstract

Geological conditions of salt cavern gas storage in China are characterized by dominantly layered salt layers with a high content of insoluble mudstone. After the water leaching of the salt layer, a large amount of sediment accumulates at the bottom of the gas storage cavity. During the gas injection process, only the clean brine above the sediment can be expelled, leaving a brine layer of 2–5 m and a large amount of brine in the pore space of the sediment. To increase storage capacity, it is urgent to explore the secondary gas injection and brine drainage technology to further expel residual brine in pores of the sediment at the cavern bottom. The sediment is relatively loosely packed and is composed of mudstone particles, which easily migrate and block the brine withdrawal pipe. In this paper, firstly, the mineral composition, particle size and distribution characteristics of the sediment at the bottom of the salt cavern are fully understood by XRD and sieve analysis methods. Then, a lab simulation device suitable for secondary gas injection and brine drainage of a high-salinity salt cavern with a diameter and height of 25 cm was designed and built. A screen sand control experiment, a gravel pack artificial wall sand control experiment and chemical cementing sand were simulated. The effects of gas injection, brine drainage pressure, brine layer height and insoluble particle size on sand production and liquid drainage were studied. The influence factors of brine withdrawal on the sand control in secondary brine drainage were intensively investigated, and finally, the gravel pack artificial wall sand control technology system was recommended. The optimal construction parameters for secondary brine discharge are recommended as follows: Under the condition of gravel packing with the same particle size, the trend of sand content with different artificial wall thicknesses is not obvious, and a 2 cm wall thickness is the best in the overall experiment, corresponding to 28 cm in the field. The larger the particle size of the gravel pack, the better the sand control, and the best gravel size is 10–20 mesh. The injection pressure should be as low as possible.

Suggested Citation

  • Yi Zhang & Kun Zhang & Jun Li & Yang Luo & Li-Na Ran & Lian-Qi Sheng & Er-Dong Yao, 2023. "Study on Secondary Brine Drainage and Sand Control Technology of Salt Cavern Gas Storage," Sustainability, MDPI, vol. 15(10), pages 1-19, May.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:10:p:7793-:d:1143270
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    References listed on IDEAS

    as
    1. Zhang, Nan & Shi, Xilin & Wang, Tongtao & Yang, Chunhe & Liu, Wei & Ma, Hongling & Daemen, J.J.K., 2017. "Stability and availability evaluation of underground strategic petroleum reserve (SPR) caverns in bedded rock salt of Jintan, China," Energy, Elsevier, vol. 134(C), pages 504-514.
    2. Jingcui Li & Jifang Wan & Hangming Liu & Maria Jose Jurado & Yuxian He & Guangjie Yuan & Yan Xia, 2022. "Stability Analysis of a Typical Salt Cavern Gas Storage in the Jintan Area of China," Energies, MDPI, vol. 15(11), pages 1-15, June.
    3. Wang, Tongtao & Yan, Xiangzhen & Yang, Henglin & Yang, Xiujuan & Jiang, Tingting & Zhao, Shuai, 2013. "A new shape design method of salt cavern used as underground gas storage," Applied Energy, Elsevier, vol. 104(C), pages 50-61.
    4. Fu, Zheng & Chen, Zhiguo & Sharif, Arshian & Razi, Ummara, 2022. "The role of financial stress, oil, gold and natural gas prices on clean energy stocks: Global evidence from extreme quantile approach," Resources Policy, Elsevier, vol. 78(C).
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    Cited by:

    1. Omid Ahmad Mahmoudi Zamani & Dariusz Knez, 2024. "Well Integrity in Salt Cavern Hydrogen Storage," Energies, MDPI, vol. 17(14), pages 1-22, July.
    2. Yi Zhang & Jun Lu & Jun Li & Yan Liu & Erdong Yao, 2023. "The Flow Law of Brine and Sediment Particles in Gas-Driven Brine Drainage in the Sediments of Salt Cavern Gas Storage," Sustainability, MDPI, vol. 15(16), pages 1-16, August.

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