Craft and Hawkins Method ^[1]

where

• q _o = critical rate (maximum oil rate without coning), STB/day

• PR = productivity ratio

• P ? _ws = static well pressure corrected to the middle of the producing interval, psi

• p _wf = flowing well pressure at the middle of the producing interval, psi

• b ? = penetration ratio, h _p/h

• h _p = thickness of perforated interval, ft

• h = oil column thickness, ft

• ? _o = oil viscosity, cp

• B _o = oil formation volume factor, RB/STB

Meyer, Gardner, and Pirson Method ^[2], ^[3]

Gas Coning

where

• q _o = critical rate (maximum oil rate without gas coning), STB/day

• ? _o = oil density, gm/cc

• ? _g = gas density, gm/cc

• r _e = drainage radius, ft

• r _w = wellbore radius, ft

• k _o = effective...