Yong Bai - Deepwater Flexible Risers and Pipelines

1 Cover

2 Title page

3 Copyright

4 Preface

5 Acknowledgment

6 About the Author

7 Part 1: LOCAL ANALYSIS 1 Introduction1.1 Flexible Pipelines Overview 1.2 Environmental Conditions 1.3 Flexible Pipeline Geometry 1.4 Base Case-Failure Modes and Design Criteria 1.5 Reinforcements 1.6 Project and Objectives References 2 Structural Design of Flexible Pipes in Different Water Depth2.1 Introduction 2.2 Theoretical Models 2.3 Comparison and Discussion 2.4 Conclusions References 3 Structural Design of High Pressure Flexible Pipes of Different Internal Diameter3.1 Introduction References 3.2 Analytical Models 3.3 FEA Modeling Description 3.4 Result and Discussion 3.5 Design 3.6 Conclusions References 4 Tensile Behavior of Flexible Pipes4.1 Introduction 4.2 Theoretical Models 4.3 Numerical Model 4.4 Comparison and Discussion 4.5 Parametric Study 4.6 Conclusions References 5 Design Case Study for Deep Water Risers5.1 Abstract 5.2 Introduction 5.3 Cross-Sectional Design 5.4 Case Study 5.5 Design Result 5.6 Finite Elements Analysis 5.7 Conclusion References 6 Unbonded Flexible Pipe Under Bending6.1 Introduction 6.2 Helical Layer Within No-Slip Range 6.3 Helical Layer Within Slip Range References 7 Coiling of Flexible Pipes7.1 Introduction 7.2 Local Analysis 7.3 Global Analysis 7.4 Parametric Study 7.5 Conclusions References

8 Part 2: RISER ENGINEERING 8 Flexible Risers and Flowlines8.1 Introduction 8.2 Flexible Pipe Cross-Section 8.3 End Fitting and Annulus Venting Design 8.4 Flexible Riser Design References 9 Lazy-Wave Static Analysis9.1 Introduction 9.2 Fundamental Assumptions 9.3 Configuration Calculation 9.4 Numerical Solution 9.5 Finite Element Model 9.6 Comparison and Discussion 9.7 Parameter Analysis 9.8 Conclusions References 10 Steep-Wave Static Configuration10.1 Introduction 10.2 Configuration Calculation 10.3 Numerical Solution 10.4 Comparison and Discussion 10.5 Parametric Analysis 10.6 Conclusions References 11 3D Rod Theory for Static and Dynamic Analysis11.1 Introduction 11.2 Nomenclature 11.3 Mathematical Model 11.4 Case Study 11.5 Results and Discussion 11.6 Conclusions References 12 Dynamic Analysis of the Cable-Body of the Deep Underwater Towed System12.1 Introduction 12.2 Establishment of Towed System Dynamic Model 12.3 Numerical Simulation and Analysis of Calculation Results 12.4 Conclusions Acknowledgments References 13 Dynamic Analysis of Umbilical Cable Under Interference13.1 Introduction 13.2 Dynamic Model of Umbilical Cable 13.3 The Establishment of Dynamic Simulation Model in OrcaFlex 13.4 The Calculation Results 13.5 Conclusion References 14 Fatigue Analysis of Flexible Riser14.1 Introduction 14.2 Fatigue Failure Mode of Flexible Riser 14.3 Global Model of Flexible Risers 14.4 Failure Mode and Design Criteria 14.5 Calculation Method of Fatigue Life of Flexible Riser 14.6 Example of Fatigue Life Analysis of Flexible Riser References 15 Steel Tube Umbilical and Control Systems15.1 Introduction 15.2 Control Systems 15.3 Cross-Sectional Design of the Umbilical 15.4 Steel Tube Design Capacity Verification 15.5 Extreme Wave Analysis 15.6 Manufacturing Fatigue Analysis 15.7 In-Place Fatigue Analysis 15.8 Installation Analysis 15.9 Required On-Seabed Length for Stability References 16 Stress and Fatigue of Umbilicals16.1 Introduction 16.2 STU Fatigue Models 16.3 Worked Example 16.4 Conclusions 16.5 Recommendations References 17 Cross-Sectional Stiffness for Umbilicals17.1 Introduction 17.2 Theoretical Model of Umbilicals 17.3 Bending Stiffness of Umbilicals 17.4 Tensile Stiffness of Umbilicals 17.5 Torsional Stiffness of Umbilicals 17.6 Ultimate Capacity of Umbilicals References 18 Umbilical Cross-Section Design18.1 Introduction 18.2 Umbilicals Cross-Section Design Overview 18.3 Umbilical Cable Cross-Section Design References

9 Part 3: FIBER GLASS REINFORCED DEEP WATER RISERS 19 Collapse Strength of Fiber Glass Reinforced Riser19.1 Introduction 19.2 External Pressure Test 19.3 Theoretical Analysis 19.4 Numerical Analysis 19.5 Finite Element Analysis 19.6 Conclusion References 20 Burst Strength of Fiber Glass Reinforced Riser20.1 Introduction 20.2 Experiment 20.3 Numerical Simulations 20.4 Analytical Solution 20.5 Results and Discussion 20.6 Parametric Analysis 20.7 Conclusions References 21 Structural Analysis of Fiberglass Reinforced Bonded Flexible Pipe Subjected to Tension21.1 Introduction 21.2 Experiment 21.3 Theoretical Solution 21.4 Finite Element Model 21.5 Comparison and Discussion 21.6 Parametric Study 21.7 Conclusions Acknowledgement References 22 Fiberglass Reinforced Flexible Pipes Under Bending22.1 Introduction 22.2 Experiment 22.3 Analytical Solution 22.4 Finite Element Method 22.5 Result and Conclusion 22.6 Parametric Analysis 22.7 Conclusions References 23 Fiberglass Reinforced Flexible Pipes Under Torsion23.1 Introduction 23.2 Experiments 23.3 Experimental Results 23.4 Analytical Solution ( k = 2, 3 … ( n − 1)) (k = 1, n) 23.5 Numerical Simulations 23.6 Results and Discussions 23.7 Parametric Analysis 23.8 Conclusions Acknowledgments References 24 Cross-Section Design of Fiberglass Reinforced Riser24.1 Introduction 24.2 Nomenclature 24.3 Basic Structure of Pipe 24.4 Strength Failure Design Criteria 24.5 Failure Criteria for Instability Design 24.6 Design Criteria for Leakage Failure References 25 Fatigue Life Assessment of Fiberglass Reinforced Flexible Pipes25.1 Introduction 25.2 Global Analysis 25.3 Rain Flow Method 25.4 Local Analysis 25.5 Modeling 25.6 Result Discussion 25.7 Sensitivity Analysis 25.8 Fatigue Life Assessment 25.9 Conclusion References

10 Part 4: ANCILLARY EQUIPMENTS FOR FLEXIBLES AND UMBILICALS 26 Typical Connector Design for Risers26.1 Introduction 26.2 Carcass 26.3 Typical Connector 26.4 Seal System 26.5 Termination of the Carcass 26.6 Smooth Bore Pipe 26.7 Rough Bore Pipe 26.8 Discussion 26.9 Conclusions References 27 Bend Stiffener and Restrictor Design27.1 Introduction 27.2 Response Model 27.3 Extreme Load Description 27.4 General Optimization Scheme 27.5 Application Example 27.6 Non-Dimensional Bend Stiffener Design 27.7 Alternative Non-Dimensional Parameters 27.8 Conclusions References 28 End Termination Design for Umbilicals28.1 Introduction 28.2 Umbilical Termination Assembly 28.3 Subsea Termination Interface References 29 Mechanical Properties of Glass Fibre Reinforced Pipeline During the Laying Process29.1 Introduction 29.2 Theoretical Analysis 29.3 Static Analysis 29.4 Dynamic Characteristic Analysis 29.5 Conclusions References

11 Index

12 Also of Interest

13 End User License Agreement

1 Chapter 1 Figure 1.1 Employment of flexible pipelines as risers. Figure 1.2 Unbonded composite-based flexible pipe. Figure 1.3 Unbonded metal-based flexible pipe. Figure 1.4 Interlocked carcass. Figure 1.5 Pressure armor cross-section profiles.

2 Chapter 2 Figure 2.1 Schematic representation reference systems, initial radial displaceme... Figure 2.2 Carcass profile-principal outline. Figure 2.3 Parameterized carcass profile. Figure 2.4 Full carcass cross section imported. Figure 2.5 Carcass model geometry. Figure 2.6 Steel strain-stress relationship. Figure 2.7 Load and boundary conditions. Figure 2.8 ALLKE/ALLSE versus dimensionless load. Figure 2.9 Carcass model mesh details, cross-section, and surfaces. Figure 2.10 U1 displacements. Figure 2.11 U2 displacements. Figure 2.12 Ovality versus dimensionless load. Figure 2.13 Ovality versus load for different geometries, where dashed lines sta... Figure 2.14 Critical loads versus dimensionless diameters. Figure 2.15 Error trend. Figure 2.16 Critical load comparison for all the model established versus dimens... Figure 2.17 Results comparison for FEM and modified theoretical model. Figure 2.18 Stress-strain relationship. Figure 2.19 HDPE stress-strain relationship.