PE 453 EXAM-2 FALL2008 - AL-FATAH UNIVERSIY Faculty Of...

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AL-FATAH UNIVERSIY Faculty Of Engineering Department Of Petroleum Engineering Applied Reservoir Eng. (PE-453) Mid-Term Exam. #2 ( Spring 2008) General Form of MBE : BwWp Bg Rsoi Rp Bt Np We p Swi cf cwSwi NBti m Bgi Bg Bgi NmBti Bti Bt N ] ) ( [ ) ( 1 1 ) ( Q-1 Saturated oil reservoir with gas cap has initial free gas of 180x 10 9 scf, IOIP of 550 x 10 6 stb, Boi = 1.322 bbl/stb, Rsoi = 375 scf/stb , m = 0.25 CALCULATE: (a) - The initial gas formation volume factor (Bgi) (b) – Initial gas in place Q-2 An undersaturated volumetric reservoir has the following data: Pi = 2800 psi Boi = 1.375 bbl/stb Rsoi = 240 scf/stb, Pb = 1200 psi, Current Res. Press: 2000 psi, Bo= 1.3877 bbl/stb, Cw = 3.6x10 -6 cf = 8.6x10 -6 , Swi =0.25 Np = 9.58 MMSTB Calculate: a- Ni and RF at 2000 psi by considering effect of compressibility. b- The reservoir pore volume VP in cubic feet. c- Bo at Pb, assuming constant oil expansion ? Q-3 The following set of data is given for saturated combined drives reservoir: Pi = 3200 psi, Bgi = 0.0063 cf/scf , Rsoi = 560 scf/stb, Boi = 1.313 bbl/stb, m = 0.25 After 3 years of production, this date was obtained:
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