Excel Function

ptaTd


Description:

Dimensionless time

Excel Function Syntax:

ptaTd(t, k, poro, mu, ct, rw)

Online Calculator:

Parameter Value Description
t elapsed time, hours
k matrix permeability, md
poro porosity, dimensionless
mu viscosity, cp
ct total compressibility, 1/psi
rw wellbore radius, ft
Result

Related Functions


4 items

ptaCd

Dimensionless wellbore storage coefficient

ptaLd

Dimensionless distance

ptaPd

Dimensionless pressure as defined for constant-rate production

ptaRwd

Dimensionless radius

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