Excel Function

ptaPd

Description:

Calculates dimensionless pressure for constant-rate production, [dimensionless].

Excel Function Syntax:

=ptaPd(P, Pi, q, k, h, B, mu)

Parameters:

Parameter	Description
P	Pressure, [psi].
Pi	Original reservoir pressure, [psi].
q	Flow rate at surface, [STB/D].
k	Matrix permeability, [mD].
h	Net formation thickness, [ft].
B	Formation volume factor, [bbl/STB].
mu	Viscosity, [cP].

Related Theory

1 item

Pressure Transient Analysis

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