Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2024, Vol. 46 ›› Issue (3): 66-76.DOI: 10.11885/j.issn.1674-5086.2022.11.24.01

• OIL AND GAS ENGINEERING • Previous Articles     Next Articles

Application and Prospect of Choline-based Deep Eutectic Solvent in EOR and CCUS

BAI Jiajia1, CHEN Zhangxing2,3, KANG Yili4, CHEN Mingjun4, TAO Lei1   

  1. 1. School of Petroleum and Natural Gas Engineering, Changzhou University, Changzhou, Jiangsu 213164, China;
    2. Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N1N4, Canada;
    3. Eastern Institute for Advance Study, Ningbo, Zhejiang 315200, China;
    4. National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2022-11-24 Published:2024-06-26

Abstract: Deep Eutectic Solvent (DES) has the advantages of low saturated vapor pressure, non-flammability, non-explosion, non-toxicity, easy degradation, good electrochemical and thermal stability, etc. DES has a good surface activity, and the hydrogen bond network in DES has a good synergistic oil displacement effect with anionic/cationic surfactants. The researches on synergistic effect of DES and common surfactants is still in the initial stage, and the mechanism of Enhanced Oil Recovery (EOR) of their compound system is still unclear. On the basis of comprehensive analysis and summary of the physical and chemical properties of choline-based DES, this paper explores the EOR mechanism of DES and its mixed system with anionic/cationic surfactants, reveals the mechanism of carbon dioxide absorption by DES, and puts forward some suggestions on the application of DES in EOR and carbon capture, utilisation and storage (CCUS) of heavy oil reservoirs, low permeability reservoirs. The research results are of significance in guiding the popularization and application of DES in EOR and CCUS.

Key words: choline chloride deep eutectic solvent, chemical flooding, hydrogen bond, EOR, CCUS

CLC Number: