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套管内压变化和高温条件下水泥环完整性评价

摘要第4-5页
Abstract第5页
Chapter1 Introduction第8-10页
    1.1 Significance of Research第8页
    1.2 Objectives of the Research第8-10页
Chapter2 Cement Integrity Concepts第10-38页
    2.1 Importance of Cement第10-11页
    2.2 Stress第11-12页
    2.3 Strain第12-14页
    2.4 Young’s Modulus第14页
    2.5 Poisson’s Ratio第14页
    2.6 Shear Modulus第14-15页
    2.7 Bulk Modulus第15页
    2.8 Dynamic Elastic Properties第15-16页
    2.9 Plastic Deformation第16-17页
    2.10 Failure Mechanics第17-19页
        2.10.1 Tensile and Compressive Failure第17-18页
        2.10.2 Mohr-Coulomb Failure Criteria第18-19页
    2.11 Fracture Mechanics第19-20页
    2.12 Heat Transfer第20-22页
        2.12.1 Thermal Conductivity第21页
        2.12.2 Thermal Expansion Coefficients第21-22页
    2.13 Multi-Stage Technique in Hydraulic Fracturing第22-34页
        2.13.1 Production Performance Comparison of Stage Techniques第23-25页
        2.13.2 Pressure Variations in Multi-Stage Fracturing第25-27页
        2.13.3 Temperature Variations in Multi-Stage Fracturing第27-31页
        2.13.4 Perforation Specifications in Multi-Stage Fracturing第31-34页
    2.14 Well Integrity in Horizontal Cemented Wells第34-38页
Chapter3 Cement Failure Evaluation under Internal Casing Pressure Change第38-55页
    3.1 Finite Element Method第38-39页
    3.2 Cement Failure Evaluation Using Abaqus第39-54页
        3.2.1 Data for Cement Failure Analysis第39-40页
        3.2.2 Model Description第40-42页
        3.2.3 Stress Concentration第42页
        3.2.4 Failure Analysis of A Cement第42-46页
        3.2.5 Failure Analysis of B Cement第46-49页
        3.2.6 Failure Analyses of C Cement第49-52页
        3.2.7 Young’s Modulus and Poisson’s Ratio Effects on Cement Failure第52-54页
    3.3 Summary第54-55页
Chapter4 Temperature Effects on Cement Sheath Integrity第55-73页
    4.1 Model to Calculate Thermal Stress Distribution along Cement Sheath第55-59页
    4.2 Thermal stress distribution in“Casing-Cement-Formation”system第59-61页
    4.3 The Effect of the Cement and Casing Temperature Change and Well Parameters on the Cement Sheath Failure第61-68页
        4.3.1 The Effect of Cement Wall Thickness on Thermal Stress第61-63页
        4.3.2 The Effect of Cement Elastic Modulus第63-64页
        4.3.3 The Effect of Casing Elastic Parameters on Thermal Stress of Cement Sheath第64-65页
        4.3.4 The Effect of Formation Elastic Properties on Cement Thermal Stress第65-66页
        4.3.5 The Effect of Casing Temperature on Cement Thermal Stress第66-68页
    4.4 Cement Sheath Thermal Stress Failure Criterions第68-71页
        4.4.1 Tensile Failure Criteria第68-69页
        4.4.2 Shear Failure Criterion第69-70页
        4.4.3 Equivalent Stress Failure Criterion第70-71页
    4.5 Summary第71-73页
Conclusion第73-74页
References第74-77页
Acknowledgements第77页

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