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A pre-stimulation drawdown test was conducted on a new gas well followed by a small frac job and then a by a post-stimulation buildup test. The test results other relevant data are also provided below: Pre-Stimulation Post -Stimulation - Test Test Time Pressure Time Pressure hrs. psia hrs. psia 0.01 3470 0.5 3072.0 0.02 3440 1 3097.0 0.04 3400 2 3137.0 0.08 3329 3 3172.0 0.15 3289 4.0 3205.0 0.25 3258 6.0 3225.0 0.5 3220 8.0 3260.0 1 3208 10.0 3290.0 2 3191 12.0 3315.0 3 3182 15.0 3325.0 4 3175 18 3340.0 5 3168 6 3163 8 3155 10 3148 12 3144 18 3134 24 3126 Porosity = 7.5% Swi = 30% rw = 0.5ft. h = 20 ft. Pi = 3500 psia = 200F. Gas Gravity = 0.8394 q = 1 MMcfd for Pre-stimulation q = 1.5 MMcfd for Post-stimulation Determine the fracture half-length.

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