Gas pressure testing time for unsteady gas flow

Input(s)

d: Internal Pipe Diameter (in.)

L: Length of Pipe (miles)

P: Initial Pressure (psi)

Output(s)

$\mathrm{t}_{\mathrm{m}}$: Minimum Time Needed for Testing (h)

Formula(s)

$$ \mathrm{t}_{\mathrm{m}}=\frac{3 *\left(\mathrm{~d}^{2}\right) * \mathrm{~L}}{\mathrm{P}} $$

Reference(s)

John M. Campbell, Gas Conditioning and Processing, Campbell Petroleum Series, Oklahoma, 1992, Vol. 2, Page: 30