In our latest session, Ali Azi (Welltest Nordisk) presented a rigorous methodology for quantifying uncertainty in Pressure Transient Analysis (PTA) results, moving beyond traditional rule-of-thumb error margins. Building on a 2008 paper and subsequent work, the approach combines well test models, static data, and Monte Carlo simulation to provide case-specific confidence intervals for parameters such as k, kh, C, S, and ri. You’ll see:
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