The production history and fluid properties as a function of time and average reservoir pressure from the X-sand Gas reservoir in Algeria are given in the table below. The reservoir's believed to be under the influence of water drive which is entering the reservoir at a constant unknown rate (Qw) where We = (Qw)(t) and t is the time. The reservoir temperature's 160 °F. The gas gravity is 0.625 and it contains 5 mol % CO₂ and 4 mol% H₂S. Calculate the initial gas-in-place (G₁) in SCF. \text { What is the value of } Q_{w} \text { in } M \mathrm{ft}^{3} / \text { day? } Calculate the amount of water which encroached the reservoir (We) in bbl after 730 days.

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The production history and fluid properties as a function of time and average reservoir pressure from the X-sand Gas reservoir in Algeria are given in the table below. The reservoir's believed to be under the influence of water drive which is entering the reservoir at a constant unknown rate (Qw) where We = (Qw)(t) an