BEHAVIOR OF SHALE CAPROCK UNDER EXPOSURE TO SUPERCRITICAL CO2

• Author / Creator

  Liu,Ming

• Batch reaction tests were conducted on Lea Park shale from Pembina Cardium Field in Alberta to investigate geochemical alterations induced by exposing brine/CO2 mixtures at designed pressure and temperature. Dissolution of illite and growth of cluster-coating structures were observed on rock surface, all the cluster-coating structures disappears overtime followed by the precipitation of new clay mineral dominated material on the surface of work. Meanwhile, very low capillary entry pressure of 700KPa and ultra-low permeability of less than 1nD were measured for this caprock material which indicates that even though CO2 may easily penetrate into the caprock formation due to its low capillary entry pressure but it will be effectively be trapped due to its ultra-low permeability.

• Subjects / Keywords

  • Carbon Storage
  • Shale
  • Pemeability
  • Capillary Pressure
  • Batch Reaction

• Graduation date

  Fall 2013

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R30000B1T

• 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.