Construct IPR of a vertical well in an undersaturated oil reservoir using the generalized Vogel equation. The following data are given: Porosity, 0.2 Effective horizontal permeability, k = 80 md Pay zone thickness, h = 55 ft Reservoir pressure, p = 4,500 psia Bubble point pressure, p = 4,500 psia Fluid formation volume factor, B₁ = 1.1 Fluid viscosity, μ = 1.8 cp Total compressibility, c, = 0.000013 psi-¹ Drainage area, A = 640 acres (re = 2,980 ft) Wellbore radius, r = 0.328 ft Skin factor, S=2