1. The following pressure and production data are available from an offshore dry gas
Determine the Initial Gas in-Place assuming a normally pressured gas reservoir.
Y. = 0.6 T = 200°F
Determine the Initial Gas in-Place assuming a geopressured gas reservoir with
the following information available:
C, = 19.5 X 10 6 psia` 1 'psia = 0.22
Determine the Initial gas in-place assuming a geopressured gas reservoir with the
following information available:
cw-3.2x10° psia Sw-0.22
2. The wet gas reservoir given in Homework 1 (Problem 2) has been producing at the high-
pressure separator rate of 25 MMcfd. The measured reservoir pressures are given below:
Reservoir Pressure after 183 days = 2843 psia
Reservoir Pressure after 365 days = 2720 psia
Determine the initial wet gas in place by material balance assuming it is a water drive
reservoir. The estimated aquifer properties are given below.
Infinite Radial, a = 360°
= 20% h = 50 ft. k = 50 md
u = 1 cp C,
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