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CO 2 flooding properties of Liujiagou sandstone: influence of sub‐core scale structure heterogeneity

Author

Listed:
  • Ning Wei
  • Magdalena Gill
  • Dustin Crandall
  • Dustin McIntyre
  • Yan Wang
  • Kathy Bruner
  • Xiaochun Li
  • Grant Bromhal

Abstract

The Liujiagou formation is an important CO 2 aquifer storage unit in the Ordos Basin in central China. Thus far, it has stored over 90% of the total injected CO 2 from the Shenhua carbon capture and storage (CCS) project, which is the first full‐chain CCS project in China. Understanding the basic properties of CO 2 flooding is critical for site characterization and evaluation. A core‐scale characterization and CO 2 flooding study of Liujiagou sandstone is the first step to understanding the flooding properties in a CO 2 aquifer storage project. The pore geometry of a sample was characterized using medical, industrial, and micro X‐ray computed tomography (X‐CT) scanners, as well as mercury intrusion porosity and thin section petrography. To study the flooding process, a CO 2 core flooding experiment using medical X‐CT scanning was conducted with a Liujiagou sandstone sample. Based on the CT data, experimental data, simplified models and COMSOL software, a three‐dimensional sub‐core scale numerical model that considered porosity, permeability, and capillary pressure heterogeneity was constructed for numerical simulation of CO 2 flooding under different scenarios. Laboratory experiments and numerical simulations on a Liujiagou sample revealed the following. The Liujiagou sandstone is a low‐porosity and low‐permeability sandstone with very high heterogeneity. The sub‐core porosity heterogeneity significantly affects CO 2 migration. The relative permeability and saturation distribution are significantly affected by the injection velocity of CO 2 and are different from those of other sandstones, such as Berea. The analyzed Liujiagou sandstone sample has a very low storage efficiency factor at the core scale.

Suggested Citation

  • Ning Wei & Magdalena Gill & Dustin Crandall & Dustin McIntyre & Yan Wang & Kathy Bruner & Xiaochun Li & Grant Bromhal, 2014. "CO 2 flooding properties of Liujiagou sandstone: influence of sub‐core scale structure heterogeneity," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 4(3), pages 400-418, June.
  • Handle: RePEc:wly:greenh:v:4:y:2014:i:3:p:400-418
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    File URL: http://hdl.handle.net/10.1002/ghg.1407
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    Citations

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    Cited by:

    1. Bing Bai & Xiaochun Li & Haiqing Wu & Yongsheng Wang & Mingze Liu, 2017. "A methodology for designing maximum allowable wellhead pressure for CO 2 injection: application to the Shenhua CCS demonstration project, China," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 7(1), pages 158-181, February.
    2. Pengfei Lv & Yu Liu & Lanlan Jiang & Yongchen Song & Bohao Wu & Jiafei Zhao & Yi Zhang, 2016. "Experimental determination of wettability and heterogeneity effect on CO 2 distribution in porous media," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(3), pages 401-415, June.
    3. Zhanpeng Zheng & Qingsong Ma & Pei Hu & Yongchen Song & Dayong Wang, 2020. "Uncertainty and sensitivity analysis of relative permeability curves for the numerical simulation of CO2 core flooding," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(3), pages 519-530, June.
    4. Ren, Bo & Trevisan, Luca, 2020. "Characterization of local capillary trap clusters in storage aquifers," Energy, Elsevier, vol. 193(C).
    5. Xu, Liang & Li, Qi & Myers, Matthew & Cao, Xiaomin, 2023. "Investigation of the enhanced oil recovery mechanism of CO2 synergistically with nanofluid in tight glutenite," Energy, Elsevier, vol. 273(C).
    6. Pengfei Lv & Yu Liu & Junlin Chen & Lanlan Jiang & Bohao Wu & Shuyang Liu & Yongchen Song, 2017. "Pore†scale investigation of effects of heterogeneity on CO2 geological storage using stratified sand packs," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 7(6), pages 972-987, December.

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