Geological and log data from a saturated oil reservoir show that the original oil zone is three times larger than the original gas cap. Use the following information to calculate the original gas in place and thickness of the oil zone. Well spacing=400 acres, Porosity = 17%, Initial gas saturation in the oil zone = 0.0, Initial water saturation in the oil and gas zones = 0.2, Initial reservoir pressure = 3400 psia, Bubble point pressure = 4000 psia, Current reservoir pressure = 2800 psia, Reservoir temperature = 160 F, Initial oil formation volume factor (FVF) = 1.33 bbl/STB, Oil formation volume factor (FVF) at bubble point = 1.35 bbl/STB, - Oil formation volume factor (FVF) at 2800 psia = 1.25, Water influx at 2800 pisa = 1 MMbbl, Cumulative oil production = 2 MMSTB at 2800 psia, - Cumulative gas production = 2.6 MMMSCF at 2800 psia, Gas compressibility factor = 1-0.0001p, Solution gas oil ratio = 0.2p.