Well flow efficiency (geothermal well)
Input(s)
\(p^{*}\): Horner's False Pressure at \((\mathrm{t}+\Delta \mathrm{t}=1)(\mathrm{psi})\)
\(P_{w f}\): Bottomhole Pressure at a flowing well (psi)
\(\Delta p_{\text {skin }}\): Pressure Drop caused by the Skin Effect (psi)
Output(s)
\(F E\): Flow Efficiency (per cent)
Formula(s)
\[
F E=\frac{p^{*}-p_{w f}-\Delta p_{s k i n}}{p^{*}-p_{w f}}
\]
Reference(s)
Ramey Jr, H. J. (1981). Reservoir Engineering Assessment of Geothermal Systems. Department of Petroleum Engineering, Stanford University, Page: (5.14).