Laboratory Study on the Generation and Characterisation of CO2 Colloidal Gas Aphrons

• Author / Creator

  Ghosh, Mousumi

• This research focuses on determining an optimum formulation of generating aqueous-based CO2
  Colloidal Gas Aphrons (CGAs) than can be used for CO2 sequestration and enhanced oil recovery project.
  Different pairs of polymers and surfactants were tested, with varying concentrations, to determine the
  best polymer – surfactant pair that can provide stable, viscous CO2 CGAs. The screening criteria used
  were: low shear rate viscosity (LSRV), viscosity profile, change in median diameter (d50), and frequency-time distribution.
  To simulate reservoir conditions, viscometry tests and dynamic oscillation tests were conducted on CO2 CGAs, along with the base fluid solution, under high pressures and high temperatures to determine the rheology, stability, and viscoelastic properties of CO2 CGAs and associated base fluid.
  Results of the experimental investigations have shown that stable CO2 colloidal gas aphrons can be
  generated under high pressure and high temperature conditions.

• Subjects / Keywords

  • Rheology of CO2 CGAs
  • CO2 Colloidal Gas Aphrons
  • Stability of CO2 CGAs

• Graduation date

  Fall 2013

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3HD7P101

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.