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An oil sample from Ares field was subjected to flash vaporization, differential and separator tests

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An oil sample from Ares field was subjected to flash vaporization, differential and separator tests. Data from these PVT tests are summarized in the following TABLE 1 to 3 respectively. TABLE 1: Flash Vaporization Pressure (psig) Volume of fluid in PVT cell (cc) 4000 299.99 3000 296.95 1800 294.57 1650 293.00 TABLE 2: Differential Vaporization Pressure (psig) Cumulative Gas Volume of Oil in cell Removed (cc) (cc) (at standard condition) 1800 0 227.66 1650 382.28 226.85 900 3553.76 218.75 0 8984.94 185.00 NOTE: The test was conducted at reservoir temperature Of 250 °F TABLE 3: Separator Test Oil displaced from PVT cell (1st stage separator at 212 psig and 71 °F) 105 cc Oil volume collected from the last separator stage (0 psig and 60 °F) 95 CC Total volume of gas collected from separator and stock- tank 3500 CC a. i. Calculate the oil formation volume factor (Bo) at 3000 psig. [4 marks] ii. Determine the oil formation volume factor (Bo) at 900 psig. [4 marks] b. i. Calculate the solution gas oil ratio, Rs (in scf/STB) at 3000 psig. [2 marks] ii. Determine the solution gas oil ratio, Rs (in scf/STB) at 900 psig. [4 marks] C. Calculate the total formation volume factors, Bt at 900 psig. [6 marks]