Page 7 - PVT Property Correlations

vi Contents

Handling PVT Properties for Dry Gases 37
Estimation of Critical Properties 38
Estimation of Reduced Pressure and Temperature 43
Estimation of Gas Deviation Factor 43
Estimation of Other PVT Properties of Gas 43
Applications of Techniques to Compute PVT
Properties for Dry Gases 44
Problem 2—Estimation of Critical Properties 44
Problem 3—Estimation of Gas Deviation Factor 49
Problem 4—Estimation of Other Gas PVT Properties 50
Engineering Dry Gas Reservoirs 51
Heat Content 51
Problem 5—Estimation of Heating Value of Natural Gas 56
Nomenclature 59
References 60
Further Reading 62
Problems 62

4. Wet Gases 65
PVT Properties for Wet Gases 66
Handling PVT Properties for Wet Gases 66
Option 1—From Reservoir Gas Composition 67
Option 2—From Reservoir Gas Specific Gravity 67
Option 3—From Knowledge of Surface CGR 67
Option 4—Two-Stage Separation With Full Definition 68
Option 5—Three-Stage Separation With Full Definition 68
Option 6—Two-Stage Separation (Practical) 69
Option 7—Three-Stage Separation (Practical) 69
Sequence of Calculations 70
Applications of Techniques to Compute PVT
Properties for Wet Gases 71
Problem 1—Calculation of Wet Gas Specific Gravity 72
Problem 2—Calculation of Wet Gas z-Factor and Formation
Volume Factor 74
Engineering Wet Gas Reservoirs 76
Dew Point Pressure 78
Heat Content 78
Problem 3—Calculating Heat Content for Wet Gases 79
Volumetric Calculations of Fluids in Place for Wet Gas Reservoirs 80
Problem 4—Calculating Hydrocarbon in Place for Wet Gases 81
Economic Considerations for Wet Gas Reservoirs 82
Plant Products (GPM) 83
Nomenclature 83
References 84
Further Reading 84
Problems 84