*Tubular Mechanics in Oil-Gas Wells and Its Applications*

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Author | Zifeng Li |
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Published | 2008 |

Publisher | Petroleum Industry Publishing House, China |

Pages | 256 |

**Chapter 1: Well Trajectory and Motion of Rod and Pipe in Oil and Gas Wells **

** ** 1.1 Description and Calculation of Well Trajectory

1.2 Rod and Pipe in Oil and Gas Wells

1.3 Motion of Rod and Pipe in Oil and Gas Wells

1.4 Whirling of Drillstring and Bit

1.5 Identification of Motion of Drill String

References

**Chapter 2: Load and Failure of Rod and Pipe in Oil and Gas Wells **

2.1 Loads of Rod and Pipe

2.2 Failure of Rod and Pipe

References

**Chapter 3: Fundamental Equations for Dynamic Analysis and Its Applications **

3.1 Fundamental Equations for Dynamic Analysis

3.2 Applications of the Dynamic Equations

References

**Chapter 4: Mathematical Model for Laminar Flow of Newtonian Fluid Induced by Drillstring Rotation and Revolution **

4.1 Mathematical Model for Laminar Flow of Newtonian Fluid

4.2 Studies of Drillstring-Drilling Fluid Interaction

References

**Chapter 5: Static Buckling of Rod and Pipe in Oil and Gas Wells **

5.1 Differential Equation for Static Buckling of Rod and Pipe in Slant Wells

5.2 Mathematical Model for Linear Buckling of Rod and Pipe in Horizontal Wells

5.3 Mathematical Model for Nonlinear Buckling of Rod and Pipe in Horizontal Wells

5.4 Critical Load for Harmonic and Helical Buckling of Rod and Pipe in Slant Wells

5.5 Linear-Helical Buckling of Weightless Rod and Pipe

5.6 Nonlinear-Helical Buckling of Weightless Rod and Pipe

5.7 Difference between Stability and Criss-Cross Curving of Rod and Pipe

5.8 Recent Studies of Drillstring Static and Dynamic forks and Problems

5.9 Problems in ??Non-Deflection Drill Collar??

References

**Chapter 6: Tension-Torque Model of Rod and Pipe and Its Applications **

6.1 Tension-Torque Model of Rod and Pipe

6.2 Check for Drillstring Strength

6.3 Measures for Reducing Friction and Wear of Drillstring

6.4 Monitoring of Conditions of Downhole Tools

6.5 Software for Mechanical Analysis of Drillstring and Monitoring of Condition of Downhole Tools in Directional Drilling

6.6 Software for Parameter Design of Workover Wells

References

**Chapter 7: Mechanical Analysis of Tubing String for Workover Wells **

7.1 Mathematical Model for Temperature Distribution along Tubing String

7.2 Hydraulics Calculations for Tubing and Annular Flow

7.3 Axial Resistance due to the Piston Effect of Packer

7.4 Load and Deformation analysis of Tubing String during Running-in

7.5 Load and Deformation analysis of Tubing String during Tripping-Out

7.6 Load and Deformation analysis of Tubing String in Workover Operations

7.7 Optimized Design of Tubing Strings

7.8 Software for Mechanical Analysis of Tubing String in Workover Operations

References

**Chapter 8: Vibrations of Drillstring **

8.1 Differential Equations for Axial and Torsional Vibrations of Drillstring

8.2 Mathematical Model for Axial Vibration of Drillstring

8.3 Mathematical Model for Torsional Vibration of Drillstring

8.4 Mathematical Model for Axial-Torsional-Coupled Vibration of Drillstring

8.5 Software for Mechanical Analysis of Axial and Torsional Vibrations of Drillstring

References

**Chapter 9: Dynamic Analysis of Sucker-rod Pumping Systems in Directional Wells **

9.1 Differential Equation for Dynamic Analysis of Sucker-rod Pumping Systems in Directional Wells

9.2 Diagnosis Techniques for Dynamic Parameters in Sucker-rod Pumping Systems in Directional Wells

9.3 Prediction of Dynamic Parameter Values in Sucker-rod Pumping Systems in Directional Wells

9.4 Diagnosis Techniques for Dynamic Parameters in Sucker-rod Pumping Systems in Vertical Wells

9.5 Prediction of Dynamic Parameter Values in Sucker-rod Pumping Systems in Vertical Wells

9.6 Software for Diagnosis of Dynamic Parameters in Sucker-rod Pumping Systems

9.7 Software for Prediction of Dynamic Parameter Values in Sucker-rod Pumping Systems in Vertical Wells

References

**Chapter 10: Mechanical Analysis of Bottom Hole Assembly and Well Trajectory Control **

10.1 Objective and Overview of Well Trajectory Control Studies

10.2 Differential Equations for 3-D Mechanical Analysis of Bottom Hole Assembly

10.3 3-D Static Analysis of Bottom Hole Assembly under Small-Deflection

10.4 3-D Static Analysis of Bottom Hole Assembly under Large-Deflection

10.5 3-D Dynamic Analysis of Bottom Hole Assembly under Small-Deflection

10.6 Mathematical Model for the Interaction between Drill Bit and Formation

10.7 Equations for Well Trajectory Prediction and Control

10.8 Software for 3-D Static Analysis of Bottom Hole Assembly under Small-Deflection

10.9 Software for Prediction of Well Trajectory

References

**Chapter 11: Mechanical Analysis of Tubing and Casing in Thermal Recovery Wells **

11.1 Theoretical Mathematical Model for Calculating Heat Transfer between Wellbore and Formation

11.2 Simplified Mathematical Model for Calculating Heat Transfer between Wellbore and Formation

11.3 Mechanical Analysis of Casing String

11.4 Mechanical Analysis of Steam Injection Tubing String

References

**Chapter 12: Cementing Techniques with Pre-expansion of Casing to Prevent Casing from Failure in Thermal Recovery Wells **

12.1 Theoretical Model

12.2 Illustrative Example

12.3 Field Operation Procedure

References

**Chapter 13: Mechanical Analysis of Expandable Slotted-Liners **

13.1 Expandable Slotted-Liner and Its Deformation

13.2 Mechanical Analysis of Deforming Process

13.3 Software for Mechanical Analysis of Expandable Slotted-Liners

References

**Appendix A: Nomenclature **

**Appendix B: Planar Deflection of Central Compressive Rod with Hinged Ends **

**Appendix C: Optimization with Nonlinear Least-Square Method **

**Appendix D: Basic Thermodynamics Data **

**Appendix E: Basic Units in SI Unit System **