multivariate production systems optimization - Stanford University

m(P) Gas pseudopressure.
N Cumulative oil production; Dimensionless groups defined by Ros (1961);
Flow regime parameter used by Aziz et al. (1972).
P Pressure; The n-vector of displacement from x; Newton search vector.
Pn Real price of the production at the nth time step
PV Present value.
Q Quadratic equation.
Q* Stabilized flow rate determined by nodal analysis.
q Volumetric flow rate.
q Mass flow rate.
R Universal gas constant; Real discount factor.
r* Cost of capital, fraction.
rD Interest rate of debt, fraction.
Re Reynold’s number.
rE Return on equity expected by shareholders, fraction.
re Radius of drainage.
RP Producing gas-liquid ratio.
RS Solution gas-oil ratio.
rS Solution oil-gas ratio.
rw Radius of wellbore.
S Darcy skin; Diameter of bean, 64ths of an inch.
Sα Saturation of phase α.
T Temperature.
TC Corporate tax rate, fraction.
V Volume; Velocity; Specific volume; Vapor mole fraction; Matrix of
eigenvectors.
Vα Velocity of phase α.
VΒ Bulk volume of the reservoir.
VBF Absolute bubble rise velocity.
VBS Bubble rise velocity.
VM Superficial velocity of the mix.
VSα Superficial velocity of phase α.
ωα Acentric factor of phase α.
X Free gas quality; Oil composition.
x n-vector of decision variables.
Contraction point.
xc
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