# Dimensionless storage constant for liquids

## Input(s)

C: Storage

B: Formation Volume Factor (Reservoir Volume/Standard Volume)

\(V_{s c}\): Specific Volume at Standard Conditions (cc/g)

\(\varnothing\): Porosity (fraction)

\(h\): Net Formation Thickness (m)

\(c_{t}\): Total System Effective Isothermal Compressibility \(\left(\mathrm{kg} / \mathrm{cm}^{2}\right)^{-1}\)

\(r_{w}\): Well Radius \((\mathrm{m})\)

## Output(s)

\(C_{D}\): Dimensionless Storage Constant for Liquids (dimensionless)

## Formula(s)

\[
C_{D}=\frac{C B V_{s c}}{2 \pi \varnothing h c_{t} r_{w}^{2}}
\]

## Reference(s)

Ramey Jr., H. J. (1981). Reservoir Engineering Assessment of Geothermal Systems. Department of Petroleum Engineering, Stanford University, Page: (5.18).