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Evaluation of Gas Injection Methods for Enhanced Oil Recovery in Jilin Oilfield

ABSTRACT第3页
CHAPTER 1 INTRODUCTION第10-15页
    1.1 Objective第10页
    1.2 Jilin Oil Province第10-11页
    1.3 Da'an Oilfield第11-15页
        1.3.1 Rock Composition第12页
        1.3.2 Fluid Analysis第12-13页
        1.3.3 Reservoir Properties第13-15页
CHAPTER 2 LITERATURE REVIEW第15-60页
    2.1 Introduction to Gas Injection第15页
    2.2 Screening Criteria for Gas Injection Methods第15-22页
        2.2.1 Nitrogen and Flue Gas Flooding第15-16页
        2.2.2 Hydrocarbon Miscible Flooding第16-18页
        2.2.3 Carbon Dioxide Flooding第18-19页
        2.2.4 Summary of Screening Criteria第19-20页
        2.2.5 EOR according to the lithology第20-22页
    2.3 Immiscible Gas Injection第22-36页
        2.3.1 Immiscible Displacement Theory第22页
        2.3.2 Types of Displacement第22-23页
        2.3.3 Fractional Flow Equation第23-27页
        2.3.4 Factors Affecting the Fractional Flow of Gas第27-29页
        2.3.5 Frontal Advance Theory第29-33页
        2.3.6 Efficiency of Oil Recovery第33-35页
        2.3.7 Practical Considerations第35-36页
    2.4 Miscible Gas Injection第36-57页
        2.4.1 Ternary Diagram第37-38页
        2.4.2 Phase Behavior第38-40页
        2.4.3 First Contact Miscibility第40-41页
        2.4.4 Multiple Contact Miscibility第41页
        2.4.5 Miscibility Mechanisms第41-44页
        2.4.6 Miscibility Design第44-49页
        2.4.7 Displacement and Sweep Efficiency第49-51页
        2.4.8 Factors Affecting Displacement Behavior第51-57页
    2.5 Water Alternating Gas Injection (WAG)第57-60页
CHAPTER 3 MINIMUM MISCIBILITY PRESSURE DETERMINATION第60-69页
    3.1 Empirical Correlations第60-63页
        3.1.1 Carbon Dioxide MMP第60-61页
        3.1.2 Nitrogen MMP第61-62页
        3.1.3 Natural Gas MMP第62-63页
    3.2 Slim Tube Test Simulation第63-67页
        3.2.1 Carbon Dioxide MMP第64-65页
        3.2.2 Nitrogen MMP第65-66页
        3.2.3 Natural Gas MMP第66-67页
    3.3 Results第67-69页
CHAPTER 4 GAS INJECTION EOR SIMULATION第69-115页
    4.1 Geological Model第69-71页
    4.2 Control Parameters第71页
    4.3 Carbon Dioxide Injection Simulation第71-80页
        4.3.1 CO_2 Case 1: Constrained Bottomhole Injection Pressure第71-76页
        4.3.2 CO_2 Case 2: Unconstrained Bottomhole Injection Pressure第76-80页
    4.4 Nitrogen Injection Simulation第80-89页
        4.4.1 N_2 Case 1: Production Bottomhole Pressure = 3500 psi第80-85页
        4.4.2 N_2 Case 2: Production Bottomhole Pressure = 2500 psi第85-89页
    4.5 Natural Gas Injection Simulation第89-97页
        4.5.1 Miscible Natural Gas Injection Process第89-93页
        4.5.2 Immiscible Natural Gas Injection Process第93-97页
    4.6 Water-Alternating-Gas Injection Simulation第97-113页
        4.6.1 Miscible WAG Injection with a 4:2 cycle第98-103页
        4.6.2 Miscible WAG Injection with a 2:4 cycle第103-108页
        4.6.3 Simultaneous Miscible WAG Injection第108-113页
    4.7 Results第113-115页
CHAPTER 5 CONCLUSIONS AND RECOMMENDATIONS第115-117页
    5.1 Conclusions第115-116页
    5.2 Recommendations第116-117页
REFERENCES第117-119页
ACKNOWLEDGEMENTS第119页

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