Mục lục

  • A wellbore stability model for formations with anisotropic rock strengths

    • Introduction

    • Wellbore stability model for anisotropic rock strength

      • Problem definition

      • Reference coordinate systems and rotation matrices

      • Transformation of stress components between reference coordinate systems

      • Failure criteria and material properties

      • Computational algorithms for anisotropic wellbore stability model

      • Wellbore stability analysis and discussion

        • Parametric wellbore stability analysis for a hypothetical case

          • Effects of drilling direction on failure region around the borehole

          • Effects of drilling direction on critical mud weights

          • Application of the solution to a field case

          • Conclusions

          • Acknowledgment

          • References

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