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1. The following pressure and production data are available from an offshore dry gas reservoir: Reservoir Cumulative Reservoir Cumulative Pressure Gas Production Pressure Gas Production psia MMscf psia MMscf 11,444 o 6,388 160,630 8,574 77,670 5,827 182,340 7,906 101,420 5,409 197,730 7,380 120,360 5,000 215,660 6,847 145,010 4,500 235,740 a. Determine the Initial Gas in-Place assuming a normally pressured gas reservoir. Y. = 0.6 T = 200°F b. 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 C. 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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