Page 105 - PVT Property Correlations

Wet Gases Chapter | 4 83

TABLE 4.13 Results of Economic Calculations for the Two Example Fluids
Parameter Unit Reservoir 1 Reservoir 2
Recovery factor Fraction 0.85 0.85
Value of produced gas $ 363,754,545 359,583,467
Value of produced condensate $ 405,624,459 93,140,448
Fraction of condensate value to total % 52.7 20.6

project economics. It is safe to assume that the same recovery factor can be
applied for both gas and condensate as theoretically no condensate will drop
out in the reservoir. All produced condensate on surface is initially vaporized
with the gas.

Plant Products (GPM)

In some wet gas reservoirs, and when production rates are high, it makes
economic sense to process the produced gas for additional recovery of
liquids and plant products (GPM). The calculations for plant products are
covered in the Gas Condensates Chapter.

NOMENCLATURE
API density of stock-tank liquid (API)
B gi gas formation volume factor at initial pressure (rcf/scf)
CGR condensate gas ratio (STB/MMscf)
CVD constant volume depletion
EOS equation of state
f g the fraction of the total initial gas in place that will be produced in the gaseous
phase at surface, fraction
total original gas in place (scf)
G T
G portion of gas in place that will be produced in the gaseous phase (scf)
GOR gas oil ratio (scf/STB)
GPM gallons per mcf
additional gas production (scf/STB gravity)
G pa
h reservoir net pay thickness (ft)
M o molecular weight of stock-tank liquid (lbm/lbm mol)
N oil in place (STB)
NGL natural gas liquids
p s1 primary separator pressure (psi)
R gas oil ratio (scf/STB)
R 1 primary separator GOR (scf/STB)
R 2 secondary separator GOR (scf/STB)