Experimental study of crossover from capillary to viscous fingering for supercritical CO2-water displacement in a homogeneous pore network.

@article{Wang2013ExperimentalSO,
  title={Experimental study of crossover from capillary to viscous fingering for supercritical CO2-water displacement in a homogeneous pore network.},
  author={Ying Wang and Changyong Zhang and Ning Wei and Mart Oostrom and Thomas W. Wietsma and Xiaochun Li and Alain Bonneville},
  journal={Environmental science & technology},
  year={2013},
  volume={47 1},
  pages={212-8}
}
Carbon sequestration in saline aquifers involves displacing brine from the pore space by supercritical CO(2) (scCO(2)). The displacement process is considered unstable due to the unfavorable viscosity ratio between the invading scCO(2) and the resident brine. The mechanisms that affect scCO(2)-water displacement under reservoir conditions (41 °C, 9 MPa) were investigated in a homogeneous micromodel. A large range of injection rates, expressed as the dimensionless capillary number (Ca), was… CONTINUE READING