Dimensionless ratio of effective volumetric heat capacity of injected steam to that of the steam zone


\(\rho_{w}\): Density of Water \((\mathrm{g} / \mathrm{cc})\)

\(C_{w}\): Specific Heat of Water \((\mathrm{BTU} / \mathrm{K} \mathrm{mol} \mathrm{psi})\)

dT: Temperature Differential \((\mathrm{K})\)

\(f_{s}\): Steam Quality (fraction)

\(L_{v}\): Latent Heat of Vaporization (BTU/lbm)

\(M_{r}\): Volumetric Heat Capacity of the Reservoir (BTU/ \(\mathrm{ft}^{3} \mathrm{~K}\) )


\(F_{d h}\): Dimensionless Ratio of Effective Volumetric Heat Capacity of injected Steam to that of the Steam Zone (dimensionless)


\[ \mathrm{F}_{\mathrm{dh}}=\frac{\rho_{\mathrm{w}} *\left(\mathrm{C}_{\mathrm{w}} * \mathrm{dT}+\mathrm{f}_{\mathrm{s}} * \mathrm{~L}_{\mathrm{v}}\right)}{\mathrm{M}_{\mathrm{r}} * \mathrm{dT}} \]


Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 12, Page: 164.

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