During the bidding process for oil blocks, oil company XXX obtained a contract for the exploration of a volumetric oil reservoir that initially had a cover gas cap. the following data has been made available: P Bo Rs Bg Np Gp E Eg F psia Bbl/STB Scf/STB Bbl/scf MMSTB MMscf Bbl/STB Bbl/STB MMbbl 2345 1,149 435 0,001 0 0 0 0 0 2295 1,145 423 0,0011 6,2 0,1149 7,76736 3230,2 0,0092 5059,2 0,01575 0,17235 11,99793 2278 1,136 410 0,00115 9,3 In addition to the information above, the saturation of connate water is 30%, and the compressibility of rock and water has been neglected. The reservoir has a good depth and permeability. None of the current wells in the reservoir have detected cover gas (gas cap). With the above data: 1. Estimate the original volumes of free oil and gas. 2. Estimate the pore volume (porous volume) of the reservoir. 3. Estimate current gas and oil saturations. 4. Based on the available data, what type of production mechanism would you suspect for this reservoir and why? Is the production data consistent with your expectations? why? During the bidding process for oil blocks, oil company XXX obtained a contract for the exploration of a volumetric oil reservoir that initially had a cover gas cap. the following data has been made available: P Bo Rs Bg Np Gp E Eg F psia Bbl/STB Scf/STB Bbl/scf MMSTB MMscf Bbl/STB Bbl/STB MMbbl 2345 1,149 435 0,001 0 0 0 0 0 2295 1,145 423 0,0011 6,2 0,1149 7,76736 3230,2 0,0092 5059,2 0,01575 0,17235 11,99793 2278 1,136 410 0,00115 9,3 In addition to the information above, the saturation of connate water is 30%, and the compressibility of rock and water has been neglected. The reservoir has a good depth and permeability. None of the current wells in the reservoir have detected cover gas (gas cap). With the above data: 1. Estimate the original volumes of free oil and gas. 2. Estimate the pore volume (porous volume) of the reservoir. 3. Estimate current gas and oil saturations. 4. Based on the available data, what type of production mechanism would you suspect for this reservoir and why? Is the production data consistent with your expectations? why
