Storage coefficients are the multiplicative combination of volumetric parameters that reflect the portion of a basin’s or region’s total pore volume that CO2 is expected to actually contact (DOE, 2008).
The storage coefficient, referred to as the storage efficiency factor (E) in the Carbon Sequestration Atlas of the United States and Canada (DOE, 2007, 2008) and the capacity coefficient (CC) by CSLF (CSLF, 2007), represents the fraction of the accessible pore space that can be contacted by injected CO2.
For the purposes of this paper, both DOE’s storage efficiency factor and CSLF’s capacity coefficient will be referred to as storage coefficients.