reological and log data from a saturated oil reservoir show that the original oil zone is aree times larger than the original gas cap. Use the following information to calculate the riginal 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 =160F, Initial oil formation volume factor (FVF)=1.33bbl/STB Oil formation volume factor (FVF) at bubble point =1.35bbl/STB, Oil formation volume factor (FVF) at 2800psia=1.25bbl/STB, Initial gas formation volume factor (FVF)=0.0006bbl/SCF, Gas formation volume factor (FVF) at 2800psia=0.0008bbl/SCF, Two-phase formation volume factor (FVF) at 2800psia=1.346bbl/STB, Initial solution gas/oil ratio =680SCF/STB, Water influx at 2800 pisa =1MMbbl, Cumulative oil production =2MMSTB at 2800 psia, Cumulative gas production =2.6MMMSCF at 2800 psia