For metric units
d ¼
QW u
ð Þ
4πT
ð6:15aÞ
u ¼
r
2 S c
4Tt
ð6:15bÞ
in which Q is in m
3 /d.
Fig. 6.20 Diagram illustrating the hydraulics of a pressure (artesian) well
272
D. B. Aulenbach et al.