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CO 2 huff and puff for heavy oil recovery after primary production

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  • Teng Lu
  • Zhaomin Li
  • Weiyu Fan
  • Songyan Li

Abstract

In this study, micromodel tests were performed to investigate the microscopic flow behavior during primary production and the subsequent CO 2 huff and puff. A series of 12 tests was conducted in sandpacks to evaluate the effects of the injection and production parameters on the displacement efficiency of the CO 2 huff and puff. The micromodel tests and sandpack tests showed that the flow characteristics of CO 2 huff‐and‐puff process was significantly affected by the pressure of converting the solution gas drive to the subsequent CO 2 huff and puff. A foamy oil flow could be more easily formed in the production period of the CO 2 huff and puff with a higher conversion pressure. Foamy oil can reduce the mobility of gas and provide tremendous energy to the system, thereby improving the performance of the CO 2 huff and puff. The sandpack flood results show that the oil recovery of the solution gas drive decreased as the conversion pressure increased, whereas the oil recovery of the CO 2 huff and puff increased as the conversion pressure increased. The highest total oil recovery was obtained at the pseudo‐bubblepoint pressure. The oil recovery of the CO 2 huff and puff increased as the CO 2 injection pressure and pressure decline rate increased. The oil recovery of CO 2 huff and puff increased with the soaking time, and it exhibits a significant change when the soaking time ranges from 10 h to 24 h; above this value, the increase become slight. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

Suggested Citation

  • Teng Lu & Zhaomin Li & Weiyu Fan & Songyan Li, 2016. "CO 2 huff and puff for heavy oil recovery after primary production," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(2), pages 288-301, April.
    • Handle: RePEc:wly:greenh:v:6:y:2016:i:2:p:288-301
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    File URL: http://hdl.handle.net/10.1002/ghg.1566
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    Cited by:

    1. Zhou, Xiang & Li, Xiuluan & Shen, Dehuang & Shi, Lanxiang & Zhang, Zhien & Sun, Xinge & Jiang, Qi, 2022. "CO2 huff-n-puff process to enhance heavy oil recovery and CO2 storage: An integration study," Energy, Elsevier, vol. 239(PB).
    2. Mukun Li & Hongjian Ni & Ruihe Wang & Weiqiang Song, 2018. "The effect of thermal stresses on the relation between rock failure and temperature and pressure of supercritical carbon dioxide jet," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 8(2), pages 218-237, April.
    3. Zhou, Xiang & Yuan, Qingwang & Rui, Zhenhua & Wang, Hanyi & Feng, Jianwei & Zhang, Liehui & Zeng, Fanhua, 2019. "Feasibility study of CO2 huff 'n' puff process to enhance heavy oil recovery via long core experiments," Applied Energy, Elsevier, vol. 236(C), pages 526-539.

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