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Feasibility study of improved unconventional reservoir performance with carbonated water and surfactant

Author

Listed:
  • Yu, Haiyang
  • Rui, Zhenhua
  • Chen, Zhewei
  • Lu, Xin
  • Yang, Zhonglin
  • Liu, Junhui
  • Qu, Xuefeng
  • Patil, Shirish
  • Ling, Kegang
  • Lu, Jun

Abstract

For unconventional reservoirs, water flooding performs poorly because of low displacement efficiency; gas flooding shows limited enhanced oil recovery (EOR) capability due to gas breakthrough. Carbonated water injection (CWI) and active CWI (ACWI) are promising EOR methods which combine advantages of water and gas flooding. This paper provides experimental and numerical studies of carbonated water and surfactant injection based on a case study in Changqing Oilfield, China, which is the first time to investigate the feasibility of CWI and ACWI for tight oil reservoirs. This study compares performances of active water injection (AWI), CWI, Water altering gas (WAG), and ACWI. Experimental results reveal that the oil recovery of CWI is 2.7% more than WAG. ACWI achieves the highest incremental oil recovery (9.43%) among four methods. The sensitivity analyses of ACWI + WAG is further implemented experimentally, which demonstrates that ACW as a pre-flood improves 7% of oil recovery during WAG process. For Changqing tight reservoir cores, the optimal injection volume of ACW is 0.8 pore volume. Numerical simulations are conducted to validate the capability of cubic Equation-of-State coupled with Henry's law (EOS/H model) for CWI in tight oil reservoirs, indicating EOS/H model is applicable to correlate phase behavior of carbonated water and oil system. This paper, for the first time, investigates the EOR performance of ACWI in tight oil reservoirs. These results explore the feasible application of using CWI/ACWI in tight oil reservoir development.

Suggested Citation

  • Yu, Haiyang & Rui, Zhenhua & Chen, Zhewei & Lu, Xin & Yang, Zhonglin & Liu, Junhui & Qu, Xuefeng & Patil, Shirish & Ling, Kegang & Lu, Jun, 2019. "Feasibility study of improved unconventional reservoir performance with carbonated water and surfactant," Energy, Elsevier, vol. 182(C), pages 135-147.
    • Handle: RePEc:eee:energy:v:182:y:2019:i:c:p:135-147
    DOI: 10.1016/j.energy.2019.06.024
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    Cited by:

    1. Huang, Feifei & Pu, Chunsheng & Gu, Xiaoyu & Ye, Zhengqin & Khan, Nasir & An, Jie & Wu, Feipeng & Liu, Jing, 2021. "Study of a low-damage efficient-imbibition fracturing fluid without flowback used for low-pressure tight reservoirs," Energy, Elsevier, vol. 222(C).
    2. Chaturvedi, Krishna Raghav & Trivedi, Japan & Sharma, Tushar, 2020. "Single-step silica nanofluid for improved carbon dioxide flow and reduced formation damage in porous media for carbon utilization," Energy, Elsevier, vol. 197(C).
    3. Wang, Sijia & Jiang, Lanlan & Cheng, Zucheng & Liu, Yu & Zhao, Jiafei & Song, Yongchen, 2021. "Experimental study on the CO2-decane displacement front behavior in high permeability sand evaluated by magnetic resonance imaging," Energy, Elsevier, vol. 217(C).
    4. Meng, Zhaohui & Zheng, Haimin & Qin, Fankai & Li, Anqi & Li, Huimin & Dong, Sijie & Song, Chao & Miao, Xinyang & Yue, Wenzheng & Zhao, Kun & Zhan, Honglei, 2023. "Mechanistic study of the effect of hydrocarbon unsaturation on the distribution state of water molecules at the oil-water interface by oblique incident reflectance difference technique," Energy, Elsevier, vol. 276(C).
    5. Yang, Renfeng & Jiang, Ruizhong & Guo, Sheng & Chen, Han & Tang, Shasha & Duan, Rui, 2021. "Analytical study on the Critical Water Cut for Water Plugging: Water cut increasing control and production enhancement," Energy, Elsevier, vol. 214(C).
    6. Haiyang Yu & Songchao Qi & Zhewei Chen & Shiqing Cheng & Qichao Xie & Xuefeng Qu, 2019. "Simulation Study of Allied In-Situ Injection and Production for Enhancing Shale Oil Recovery and CO 2 Emission Control," Energies, MDPI, vol. 12(20), pages 1-18, October.

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