Page 10 - Characterization and Properties of Petroleum Fractions - M.R. Riazi

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3.6.2 Pour Point
135
3.6.3 Cloud Point 135 CONTENTS ix
3.6.4 Freezing Point 136
3.6.5 Aniline Point 137
3.6.5.1 Winn Method 137
3.6.5.2 Walsh–Mortimer 137
3.6.5.3 Linden Method 137
3.6.5.4 Albahri et al. Method 137
3.6.6 Cetane Number and Diesel Index 137
3.6.7 Octane Number 138
3.6.8 Carbon Residue 141
3.6.9 Smoke Point 142
3.7 Quality of Petroleum Products 143
3.8 Minimum Laboratory Data 143
3.9 Analysis of Laboratory Data and Development
of Predictive Methods 145
3.10 Conclusions and Recommendations 146
3.11 Problems 146
References 149
Chapter 4—Characterization of Reservoir Fluids and
Crude Oils 152
Nomenclature 152
4.1 Specifications of Reservoir Fluids and Crude
Assays 153
4.1.1 Laboratory Data for Reservoir Fluids 153
4.1.2 Crude Oil Assays 154
4.2 Generalized Correlations for Pseudocritical
Properties of Natural Gases and Gas Condensate
Systems 160
4.3 Characterization and Properties of Single Carbon
Number Groups 161
4.4 Characterization Approaches for C 7+ Fractions 163
4.5 Distribution functions for Properties of
Hydrocarbon-plus Fractions 164
4.5.1 General Characteristics 164
4.5.2 Exponential Model 165
4.5.3 Gamma Distribution Model 167
4.5.4 Generalized Distribution Model 170
4.5.4.1 Versatile Correlation 170
4.5.4.2 Probability Density Function for the
Proposed Generalized Distribution
Model 174
4.5.4.3 Calculation of Average Properties of
Hydrocarbon-Plus Fractions 175
4.5.4.4 Calculation of Average Properties of
Subfractions 177
4.5.4.5 Model Evaluations 178
4.5.4.6 Prediction of Property Distributions
Using Bulk Properties 181
4.6 Pseudoization and Lumping Approaches 184
4.6.1 Splitting Scheme 184
4.6.1.1 The Gaussian Quadrature Approach 185
4.6.1.2 Carbon Number Range Approach 186
4.6.2 Lumping Scheme 186
4.7 Continuous Mixture Characterization Approach 187

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