Q$2$:

In $2010,$ a black$-$oil reservoir was discovered in Kuwait with a pressure of $4100$ psia and a

temperature of $200F.$ The reservoir started producing $52,000$ STB$/$d of $36\frac{A}{P}$I oil and $32\mathrm{.}24$

MMSCF$/$d of $0\mathrm{.}72$ gravity gas.

By $2017,$ the reservoir pressure had dropped to $3400$ psia and the reservoir was producing

$13,200$ STB$/$d of oil and $8184$ MSCF$/$d of gas. The gravities of the produced oil and gas did

not change during the $7$ years of production. Also, the cumulative production from the reservoir

reached $8\mathrm{.}8$ million STB of oil and $5,456$ MMSCF of gas.

If the reservoir's pore volume and water saturation are constant, what is the reservoir's IOIP in

STBs$?$

Hint:

Cumulative produced oil $=$ IOIP $-$ Oil remaining

$($all in STBs$)$