SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 56 ›› Issue (4): 266-272.DOI: 10.1016/j.cjche.2022.07.006

• Full Length Article • 上一篇    下一篇

Growth rate of CO2 hydrate film on water–oil and water–gaseous CO2 interface

Tatyana P. Adamova, Sergey S. Skiba, Andrey Yu. Manakov, Sergey Y. Misyura   

  1. Kutateladze Institute of Thermophysics SB RAS, Lavrentiev Ave. 1, Novosibirsk 630090, Russian Federation
  • 收稿日期:2022-04-04 修回日期:2022-07-07 出版日期:2023-04-28 发布日期:2023-06-13
  • 通讯作者: Andrey Yu. Manakov,E-mail:manakov@niic.nsc.ru
  • 基金资助:
    The study was supported by a grant from the Ministry of Science and Higher Education of Russia, Agreement No. 075-15-2020-806 (Contract No. 13.1902.21.0014). The authors are grateful to V.A. Vlasov for calculating the values of concentrational supersaturation.

Growth rate of CO2 hydrate film on water–oil and water–gaseous CO2 interface

Tatyana P. Adamova, Sergey S. Skiba, Andrey Yu. Manakov, Sergey Y. Misyura   

  1. Kutateladze Institute of Thermophysics SB RAS, Lavrentiev Ave. 1, Novosibirsk 630090, Russian Federation
  • Received:2022-04-04 Revised:2022-07-07 Online:2023-04-28 Published:2023-06-13
  • Contact: Andrey Yu. Manakov,E-mail:manakov@niic.nsc.ru
  • Supported by:
    The study was supported by a grant from the Ministry of Science and Higher Education of Russia, Agreement No. 075-15-2020-806 (Contract No. 13.1902.21.0014). The authors are grateful to V.A. Vlasov for calculating the values of concentrational supersaturation.

摘要: It is known that injection of carbon dioxide into the petroleum reservoir (CO2 flooding) is one of the effective methods for enhanced oil recovery. CO2 flooding may be complicated by formation of CO2 hydrate plugs. It makes topical investigation of CO2 hydrate formation in the system gaseous CO2–oil–water. In this work, the growth rates of carbon dioxide hydrate films at the water–oil as well as the water–gas interface are studied in the pressure range of 2.30–3.04 MPa and at temperatures between –5.4 and 5.0 ℃. It is found that the growth rate for the water–oil interface is 3.5 times lower than that for the water–gas interface with carbon dioxide. It is hypothesised that the observed decrease in the growth rate is related to the mechanical resistance of the oil components adsorbed on the interface to the growth of the hydrate film. The growth rate of the film has been shown to depend on the experimental procedure, most likely due to the different initial concentrations of carbon dioxide in the aqueous solutions.

关键词: Gas hydrate, Oil, Carbon dioxide, Growth rate, Hydrate film

Abstract: It is known that injection of carbon dioxide into the petroleum reservoir (CO2 flooding) is one of the effective methods for enhanced oil recovery. CO2 flooding may be complicated by formation of CO2 hydrate plugs. It makes topical investigation of CO2 hydrate formation in the system gaseous CO2–oil–water. In this work, the growth rates of carbon dioxide hydrate films at the water–oil as well as the water–gas interface are studied in the pressure range of 2.30–3.04 MPa and at temperatures between –5.4 and 5.0 ℃. It is found that the growth rate for the water–oil interface is 3.5 times lower than that for the water–gas interface with carbon dioxide. It is hypothesised that the observed decrease in the growth rate is related to the mechanical resistance of the oil components adsorbed on the interface to the growth of the hydrate film. The growth rate of the film has been shown to depend on the experimental procedure, most likely due to the different initial concentrations of carbon dioxide in the aqueous solutions.

Key words: Gas hydrate, Oil, Carbon dioxide, Growth rate, Hydrate film