The following data is given for volumetric undersaturated oil reservoir:

Pi $=2640$ psi, Boi $=1\mathrm{.}57$ bbl$/$stb$,$ Rsoi $=560$ scf$/$stb$,$ Swi $=0\mathrm{.}3,$ Cw $=3\mathrm{.}5$x$10-6$ psi$-1,$ Cf $=5\mathrm{.}5$x$10-6$ psi$-1$

At reservoir pressure $1840$ psi: Bo $=1\mathrm{.}597$ bbl$/$stb$,$ Rso $=560$ scf$/$stb$,$ Np $=17\mathrm{.}5$ mmstb$,$

Wp$=200,000$stb$,$ Bw $=1\mathrm{.}04$ bbl$/$stb$.$

Calculate N & RF @ $1840$ psi