Yield

Brief

Yield is how much liquid hydrocarbons you get per volume of gas produced.

Measured at the surface.

Calculated from the flash.

Math & Physics

$Yield = 10^6 \times \frac{x \times M_L \times \frac{1}{\rho_L} \times \frac{1}{5.615}}{y \times 379.5}\ \left [ \frac{bbl}{MMscf} \right ]$

Nomenclature

$M$ = molecular weight, lb_m/lb_mol

$x$ = molar fraction of the liquid phase, lb_mol

$y$ = molar fraction of the vapor phase, lb_mol

$Yield$ = yield, bbl/MMscf

Greek symbols

$\rho$ = density, lb_m/ft³

Subscripts

L = liquid

Conversions

379.5 scf/lb_mol at P_sc=14.7 psia and T_sc 60°F