4.0: Estimating Storable Quantities

Central to the classification and categorization of storage resources is storable quantities. Therefore, this chapter provides guidelines for estimating storable quantities, a requirement of storage resource assessments. The equations in this chapter are for units of mass; however, a standard volume may be calculated by dividing mass by CO ₂ density at a standard pressure and temperature.

Although storable quantities can be calculated independent of a project, in the context of the SRMS, the description of a project (even if notional) is necessary to estimate storable quantities. Moreover, for the same geologic formation, projects with different specifications may have different storable quantities. Containment is explicit in the definition of storable quantities, and therefore must be integral to the estimate of storable quantities. To this end, the geomechanical assessments of containment may limit the storable quantities estimate (e.g., establishing a maximum storage pressure or maximum injection pressure).