PI for Vertical Wells

In this spreadsheet, just type in the required information and press the compute button. Scroll down for more info.

Lx
ft
Ly
ft
H
ft
Hp
ft
Sd
Kh
md
Kv
md
rw
ft
μo
cp
Bo
RB/STB
Ca
Sp
PI
STB/D/psi
Lx --- Length of the drainage area in the X direction ft
Ly --- Length of the drainage area in the Y direction ft
H --- Reservoir Thickness ft
Hp --- Perfotated height ft
Sd --- Skin damage factor
Kh --- Permeability in the horizontal direction md
Kv --- Permeability in the vertical direction md
rw --- Wellbore radius ft 0.25
μo --- Oil Viscosity at reservoir conditions cp
Bo --- Oil Formation Volum Factor @ reservoir conditions Bbl/STB
Ca --- Dietz Shape factor

Sp --- Skin factor from partial penetration
PI --- Productivity Index (STB/Day/psi)
(Equations to be provided later).

Copyright © 2005 Dianbin Liu
All Rights Reserved.