Fraction of injected heat remaining in reservoir

Input(s)

$Q_{i}$: Total Heat Injected (BTU)

$Q$: Total Heat Remaining (BTU)

Output(s)

$E_{h}$: Fraction of the Injected Heat Remaining in the Reservoir (fraction)

Formula(s)

$$\mathrm{E}_{\mathrm{h}}=\frac{\mathrm{Q}}{\mathrm{Q}_{\mathrm{i}}}$$

Reference(s)

Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 5, Page: 44.