PGE_312_Spring09_solution_key_HW_8

# PGE_312_Spring09_solution_key_HW_8 - 1/6 PGE 312 Physical...

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1/6 PGE 312 Physical and Chemical Behavior of Petroleum Fluids I Homework #8 Solution Key Problem 10-4: P(psig) T GOR(1) GOR(2) API Bo Formation Volume Factor Specific Gravity 200 75 541.6 602.3 40.432 1.483 1.112 0.732 0 75 176.8 178 1.007 1.329 GOR (sep) = Volume of gas removed from separator/ Volume of separator liquid = .51383 scf/(150.833cc*6.29*10 -6 bbl/cc)=541.59 scf/bbl GOR(stock tank)=Volume of gas removed from stock tank/Volume of stock tank liquid = .15186scf/(136.591cc*6.29*10 -6 bbl/cc) =176.75scf/bbl GOR(sep)= Volume of gas removed from separator /Volume of stock tank oil at S.C = .51383scf/(135.641*6.29*10 -6 bbl/cc)=602.25 scf/bbl GOR(stock tank)=Volume of gas removed from stock tank/Volume of stock tank oil at S.C = .15186scf/(135.641*6.29*10 -6 bbl/cc)=177.99 scf/bbl 432 . 40 5 . 131 823 . / 5 . 141 5 . 131 5 . 141 = - = - = o o API γ B osb = Volume of liquid expelled from cell/Volume of liquid arriving at stock tank = 201.156cc/135.641= 1.483 res-bbl/stb Seperator Volume factor=150.833/135.641=1.112bbl/stb Stock tank Volume factor=139.591/135.641=1.007 bbl/stb Problem 10-6: (a)Formation Volume Factor of oil at bubble point using separation conditions of 200 psig and 75 o F is 1.483 bbl/stb (b) Status of the well at the time of sampling is Shut-in(@t=72 hrs)

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2/6 (c) Mole fraction of nitrogen in separator gas for 100 psig, 75
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PGE_312_Spring09_solution_key_HW_8 - 1/6 PGE 312 Physical...

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