화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.11, 3273-3280, November, 2016
DOI10.1007/s11814-016-0199-y  Export Citation
A new polymeric additive as asphaltene deposition inhibitor in CO2 core flooding
Sepideh Kashefi, Abbas Shahrabadi1, Mohammad Nader Lotfollahi†, and Akbar Varamesh2
  • Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan 35131-19111, Iran
  • 1Exploration and Production Division, Research Institute of Petroleum Industry (RIPI), Tehran 14665137, Iran
  • 2Polymer Science and Technology Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
E-mail:
A new synthesized polymeric inhibitor (SPI) based on the poly-alkyl phenol formaldehyde and polyamine was introduced as asphaltene deposition inhibitor. A Turbiscan apparatus was used to investigate the stability of precipitated asphaltene in crude oil solutions by adding different concentrations of the SPI. The results of turbidity showed that the SPI could delay the asphaltene deposition and provide high stability of precipitated asphaltene in oil solutions. Then two dynamic experiments, including co-injection of crude oil and CO2 into a sandstone core, were conducted with and without the use of 500mg/L SPI at 173 bar and 50 ℃. The permeability ratio and asphaltene content remained relatively unchanged throughout the core flooding with the use of SPI, which indicated increase of the asphaltene stability in the core sample. However, the permeability ratio and outlet asphaltene content in dynamic experiment without the use of SPI decreased by about 70% and 51%, respectively.
Keywords:Polymeric Inhibitor;Asphaltene Deposition;Crude Ool;CO2 Injection;Core Flooding
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