Page 8 - PVT Property Correlations

Contents vii

5. Gas Condensates 87
PVT Properties for Gas Condensates 89
Specific Gravity of Gas Condensates 89
Dew Point Pressure 89
Gas Deviation Factor (z-Factor) 90
Other PVT Properties for Gas Condensates 90
Two-Phase z-Factor 90
Condensate Gas Ratio and Condensate Yield 91
Natural Gas Liquids 92
Modified Black Oil Approach for Gas Condensate 93
Handling PVT Properties for Gas Condensate 96
Sequence of Calculations 98
Engineering Gas Condensate Reservoirs 98
Dew Point Pressure 99
Problem 1—Calculation of Dew Point Pressure for a
Gas Condensate 100
Heat Content 102
Gas in Place Calculations for Gas Condensate Reservoirs 102
Problem 2—Calculation of Original Gas in Place for
Gas Condensate Reservoir Using Material Balance Equations 104
Plant Products (Gallons Per Thousand) 104
Problem 3—Calculation of Gallons Per Thousand
for Gas Condensate 106
Estimation of Modified Black Oil PVT Properties
for Gas Condensates 108
Problem 4—Calculation of Modified Black Oil PVT
Properties for Gas Condensate 108
Nomenclature 113
References 113
Problems 115

6. Volatile Oils 119
PVT Properties for Volatile Oils 120
Vaporized Oil Gas Ratio 120
Modified Black-Oil Approach for Volatile Oil 121
Handling PVT Properties for Volatile Oils 122
Sequence of Calculations 124
Engineering Volatile Oil Reservoirs 124
Problem 1—Calculation of Volatile Oil PVT Properties
for Different Two-Stage Separator Conditions 124
Problem 2—Calculation of Modified Black-Oil PVT
Properties for Volatile Oil 138
Nomenclature 143
References 143
Problems 144