EXAMPLE Calculate the initial oil-in-place (N) of an oil reservoir.If As 1,600 acres,h=32ft,Φ=22%，Swi=20%, and Boi 1.23 bbl/STB.EXAMPLE Calculate the initial oil-in-place (N) of an oil reservoir. If As = 1,600 acres, h = 32 ft, Φ = 22%, Swi = 20%, and Boi = 1.23 bbl/STB