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

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]