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\Delta p(t) = | p_e(t) - p_{wf}(t) | = \Delta p = \rm const |
During the PSS regime the formation pressure declines linearly with time:
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The exact solution of diffusion equation for PSS:
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and develops a unit slope on PTA diagnostic plot and Material Balance diagnostic plot.During the PSS regime the formation pressure declines linearly with time: LaTeX Math Inline
See also
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Steady State (SS) well flow regime
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