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DCA Power Law decline is an empirical correlation for production from both finite-reserves 

LaTeX Math Inline
body--uriencoded--Q_%7B\rm max%7D \leq \infty
or infinite-reserves 
LaTeX Math Inline
body--uriencoded--Q_%7B\rm max%7D = \infty
 reservoir. 

Alternative form

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anchor6YMFZ
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q(t)=q_0 \cdot \exp \left( -D_{\infty}t- \left( t/\tau \right)^{n} \right)

where

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bodyD_{\infty}

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decline decrement at long times (the higher the

LaTeX Math Inline
bodyD
the stronger is decline)

See Also

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Petroleum Industry / Upstream /  Production / Subsurface Production / Field Study & Modelling / Production Analysis / Decline Curve Analysis

DCA Arps @model ] [ Production decline rate ]

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