Experimental PVT Study of the Phase Behavior of CO2 + Heavy Oil Mixtures

  • Author / Creator
    Khaleghi, Keivan
  • In this work, the phase behavior of Athabasca bitumen + CO2 and Maya crude oil + CO2 is briefed. A literature review is presented on the previous research works (mostly experimental studies) done on CO2 + heavy oil and similar mixtures. Important aspects of phase behavior such as type of phase behavior, the onset CO2 concentration of LLV behavior, K-point (L1=V, L2) data, two-phase critical point (L=V), CO2 solubility in liquid phase and asphaltene precipitation are investigated. Different schemes, inspired by Henry’s law and conjugate measurements, to estimate the phase boundaries of mixtures in two-phase region are presented and tested on the literature data. Furthermore, solubility of CO2 in the liquid phase, type of phase behavior and phase diagrams and new critical points data as well as LLV onset concentration data for the subject mixtures are presented in a broad range of temperature, pressure and composition. Some liquid-liquid diffusion data for the two subject mixtures are also presented.

  • Subjects / Keywords
  • Graduation date
    Fall 2011
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • 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.