Skip to Main Content
  1. Home
  2. Search
  3. Experimental Determination of Minimum Miscibility Pressure Between CO2-CH4 Mixtures and Crude Oil
View
Download
Communities and Collections
Usage
  • 235 views
  • 384 downloads

Experimental Determination of Minimum Miscibility Pressure Between CO2-CH4 Mixtures and Crude Oil

  • Author / Creator
    Li Ang

  • Impure gas flooding can be used as an effective method for enhancing oil recovery. The minimum miscibility pressure (MMP) is a key parameter in the design of impure gas injection. It is thus of great importance to accurately determine the MMP for the impure gas injection process. This study experimentally determines the MMP between CO2-CH4 mixtures and a crude oil; slim-tube experiments have been conducted to measure the MMPs between this light oil sample and CO2-CH4 mixtures with different CH4 contents. At CH4’s molar fractions of 0 mol%, 5 mol%, 10 mol%, 20 mol% and 100 mol%, the corresponding MMPs are measured to be 17.74 MPa, 19.84 MPa, 22.79 MPa, 27.05 MPa and 58.64 MPa, respectively. The experimental results show that increasing the amount of CH4 present in the mixture can increase the MMP between injection gas and crude oil. When CH4’s molar fractions are 5 mol%, 10 mol% and 20 mol%, Dong (1999) correlation yields absolute relative deviations (ARD%) of 0.00% and 2.98%, and 0.70%, respectively, for the MMP predictions; these errors are lower than those yielded by the other correlations (Kovarik, 1985; Sebastian et al., 1985; Alston et al., 1985; Emera and Sarma, 2006; Shokir, 2007). For the crude oil examined in this study, Dong (1999) correlation provides the most accurate prediction of CO2-CH4 (with CH4 content up to 20 mol%) MMP among all the impure-CO2 MMP correlations examined.

  • Subjects / Keywords
  • Graduation date
    Fall 2019
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/r3-wspz-b649
  • License
    Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.