1. For the gas compositions below and conditions in Appendix C, compute the gas density. Methane=0.875 Ethane = 0.075 Propane = 0.025 Case 1: Nitrogen=0.025, other gases = 0 Case 2: Carbon dioxide = 0.025, other gases = 0 Case 3: Hydrogen sulfide = 0.025, other gases = 0 Appendix C Well in a Natural Gas Reservoir Composition of gas and properties: C(0.875) i-C4(0.006) n-C5(0.008) The = 375R Well and Reservoir Variables T= 180F = 640R P = 4613 psi Z = 0.96 Hi = 0.0249 cp Bgi h = 78 ft Sw = 0.27 S = 0.73 = 0.14 rw = 0.328 ft (7 7/8-in. well) k = 0.17 md = 0.00376 cft/Scf C(0.083) n-C4(0.002) n-C6(0.001) Ppc = 671 psi C(0.021) i-Cs(0.003) C + (0.001) Yg= 0.65