session6_DD_real_reservoir - Session 6 Analysis of Constant...

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Session 6 Analysis of Constant Rate Pressure Drawdown Tests in Real Reservoirs
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Analysis of a constant rate pressure drawdown test Semi-log analysis DD1 TIME PRESSURE TRACE time in minutes pressure in psia 0.01 2799.69022966 0.0114865580922 2799.64420892 0.0131941016805 2799.59138328 0.0151554815428 2799.53075153 0.0174084319157 2799.46116673 0.0199962964493 2799.3813155 0.0229688620794 2799.28969441 0.0263833168587 2799.18458333 0.0303053501762 2799.06401517 0.0348104165304 2798.92574179 0.039985187169 2798.76719559 0.0459292175244 2798.58544633 0.0527568625223 2798.37715289 0.0605994766125 2798.13850946 0.0696079408466 2797.86518582 0.0799555656213 2797.55226152 0.0918414249303 2797.19415376 0.105494186273 2796.78453899 0.121176509902 2796.31626859 0.13919010204 2795.78127936 0.159881519294 2795.17049984 0.183648835924 2794.47375457 0.21094930224 2793.67966879 2612.71596748 2595.17195623 3001.11137389 2593.65963358 3447.24401374 2592.11411676 3959.69686218 2590.51583803 4548.32880349 2588.83844416 5224.46430237 2587.04837977 6001.11127098 2585.10504471 6893.21132319 2582.96142999 7917.92723056 2580.56496615 9094.97311037 2577.8582267 10446.9936979 2574.77915769 12000 2571.26063959 PRESSURE DRAWDOWN TEST DD1 B(RB/STB) c(/psi) VISC(cp) 1.12 30e-6 0.4 POR h(ft) r_w(ft) 0.2 40 0.25 q(STB/day) Pi(psia) 400 2800 DD1 Test data (8.3 days)
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Analysis of a constant rate pressure drawdown test DD1 pressure drawdown test
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1 10 4 1 10 3 0.01 0.1 1 10 100 1 10 3 0.1 1 10 100 1 10 3 Pressure Derivative Plot for Test Data Time (hr) Pressure and Pressure Derivative (psia) DD1 pressure drawdown test
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