Question $5(20$ Marks$)$

Use the following data for an oil reservoir and determine the depletion drive index, gas cap drive index, and water drive index at $3950$ psia. Ignore the effect of water production and water and rock compaction $(c_f=0,c_w=0).$ The original oil in place was $67$ MMSTB and the gas cap held $38$ MMMSCF of gas at discovery.

$\backslash$table$[[\backslash$table$[[$p$],[($psia$)]],\backslash$table$[[$N$\_($p$)],[($MSTB$)]],\backslash$table$[[$G$\_($p$)],[($MMSCF$)]],\backslash$table$[[$B$\_($o$)],[($bb$//$STB$)]],\backslash$table$[[$B$\_($g$)],[($bbl$/$MSCF$)]],\backslash$table$[[$B$\_($w$)],[($bb$//$STB$)]],\backslash$table$[[$R$\_($s$)],[($SCF$/$STB$)]]],[4100,0,0,1\mathrm{.}41,0\mathrm{.}591,1\mathrm{.}13,950],[3950,1314,1140,1\mathrm{.}34,0\mathrm{.}602,1\mathrm{.}09,800]]$