Page 14 - Pipelines and Risers

Contents XI

TABLE OF CONTENTS
Series Preface V
Foreword vii
Preface ix
Chapter 1 Introduction 1
1.1 Introduction .............................................................................................................................................. 1
1.2 Design Stages and Process ....................................................................................................................... 1
1.2.1 Design Stages ................................................................................................................................... 1
1.2.2 Design Process ................................................................................................................................. 4
1.3 Design Through Analysis (DTA) ............................................................................................................. 7
I . 4 Pipeline Design Analysis ......................................................................................................................... 9
1.4.1 General ............................................................................................................................................. 9
1.4.2 Pipeline Stress Checks ..................................................................................................................... 9
1.4.3 Span Analysis ................................................................................................................................. IO
1.4.4 On-bottom Stability Analysis ......................................................................................................... 11
1.4.5 Expansion Analysis ........................................................................................................................ 14
1.4.6 Buckling Analysis ....................................................................................... 14
I . 4.7 Pipeline Installatio ................................................................................................ 17
1.5 Pipeline Simulator .................................................................................................................................. 19
1.6 References .................................................................................................................
Chapter 2 Wall-thickness and Material Grade Selection 23

2.1 General ................................................................................................................................................... 23
2.1. I General ........................................................................................................................................... 23
2.1.2 Pipeline Design Codes ................................................................................................................... 23
2.2 Material Grade Selection ........................................................................................................................ 24
2.2.1 General Principle ............................................................................................................................ 24
2.2.2 Fabrication, Installation and Operating Cost Considerations ......................................................... 25
2.2.3 Material Grade Optimization ......................................................................................................... 25
2.3 Pressure Containment (hoop stress) Design ........................................................................................... 26
2.3.1 General ........................................................................................................................................... 26
2.3.2 Hoop Stress Criterion of DNV (2000) ........................................................................................... 27
2.3.3 Hoop Stress Criterion of ABS (2000) ............................................................................................ 28
2.3.4 API RPl 11 1 (1998) ........................................................................................................................ 2Y
2.4 Equivalent Stress Criterion ...............................................................................................................
2.5 Hydrostatic Collapse .........................................................................................................................
2.6 Wall Thickness and Length Design for Buckle Arrestors ...................................................................... 34
2.7 Buckle Arrestor Spacing Design ............................................................................................................ 35
2.8 References .............................................................................................................................................. 36
Chapter 3 BucklinglCollapse of Deepwater Metallic Pipes 39
3.1 General .......................................................................................................................
3.2 Pipe Capacity under Single Load ........................................................................................................... 40
3.2.1 General ........................................................................................................................................... 40
3.2.2 External Pressure ............................................................................................................................ 41
3.2.3 Bending Moment Capacity ............................................................................................................. 44
3.2.4 Pure Bending ............. ............................................................................................................ 46
3.2.5 Pure Internal Pressure .................................................................................................................... 46
3.2.6 Pure Tension .................................................................................................................................. 46
3.2.7 Pure Compression . .................................................................................................................... 47