Reservoir characterization

Techniques for History-Matching and Forecasting Tight Oil Reservoirs Compared

This work evaluates and compares the performance of rate normalization and pressure deconvolution for both synthetic and tight-oil examples.

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Rate transient analysis (RTA) is used routinely to analyze the production history of unconventional wells. Specifically, it is used to determine the time at the end of linear flow (time to depletion), estimate drainage volume, and predict the estimated ultimate recovery (EUR) of wells. RTA uses a rate-normalization technique to characterize how the well rate changes with a changing bottomhole flow pressure. However, rate normalization approximates a more-general technique known as pressure deconvolution.

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