Yield

Brief

Yield is how much liquid hydrocarbons in bbl you get per 1 MMscf of gas.

Measured at the surface.

Can be calculated from the flash.

Math & Physics

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

379.5 ft3/lb-mol at P_sc=14.7 psia and T_sc 60°F

Nomenclature

$M$ = molecular weight, lb_m/lb_mol

$x$ = molar fraction of the liquid phase

$y$ = molar fraction of the vapor phase

$Yield$ = yield, bbl/MMscf

Greek symbols

$\rho$ = density, lb_m/ft³

Subscripts

L = liquid