One of mathematical models of Decline Curve Analysis based on the following equations:

q(t)=q_0 \cdot \exp \left[ - \int_0^t D(Q(t)) \, dt  \right]

D(Q) = {\rm ANN}(Q)

where

	Initial production rate of a well (or groups of wells)
	Production decline rate
	cumulative production
	artificial neural-network regression of Production decline rate on cumulative production

DCA ANN is an empirical correlation for production from both finite-reserves or infinite-reserves reservoirs.

See Also