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Preface List of Tables List of Figures Abbreviations Nomenclature Chapter 1 Introduction 1.1 Background 1.2 Motivation 1.3 Production Wells of Open Systems 1.4 Literature Review 1.5 Study Contents, Objectives and Research Methods 1.5.1 Study Contents 1.5.2 Objectives 1.5.3 Research Methods Chapter 2 Heat Transfer in the Surroundings 2.1 Factors Affecting the Formation Temperature 2.1.1 Geological Configuration 2.1.2 Groundwater Activity 2.1.3 Radiogenic Heat Production of Rock 2.1.4 Palaeoclimate 2.1.5 Magma Heat 2.2 Prediction of Initial Formation Temperature 2.2.1 Introduction 2.2.2 Governing Equation 2.2.3 Field Example 2.2.4 Discussion 2.2.5 Optimized Temperature Distribution 2.3 Heat Transfer in an Aquifer 2.3.1 Introduction 2.3.2 Fractal Model 2.3.3 Advection Effect in Aquifers 2.3.4 Field Example Chapter 3 Heat Transfer in the Wellbore 3.1 Heat Flow in the Tubing 3.1.1 Two-phase Flow 3.1.2 Convection of Two-phase Flow 3.1.3 Convective Equations for Geothermal Wells 3.2 Heat Transfer in the Annulus 3.2.1 Introduction 3.2.2 Heat Transfer Mechanism 3.2.3 Results and Discussions Chapter 4 Mathematical Model Establishment 4.1 Mathematical Model 4.1.1 Assumptions and Delamination for Formation 4.1.2 Heat Transfer in the Surroundings 4.1.3 Heat Transfer in the Wellbore 4.2 Calculation Processes Chapter 5 Model Simulation 5.1 Parameters Assumption 5.2 Model Realization 5.3 Simulation Scenarios 5.3.1 Production Time and Flow Rate 5.3.2 Wellbore Structure 5.3.3 Annulus and Cement 5.3.4 Geological Conditions 5.3.5 Optimization Chapter 6 Model Application Chapter 7 Conclusions 7.1 Prediction of IFT 7.2 Heat Transfer in an Aquifer 7.3 Total Thermal Conductivity in the Annulus 7.4 Model Establishment and Simulation 7.5 Model Application Chapter 8 Summary References