ORCINTECH Online Courses

Introduction to Subsea Pipeline Engineering

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Full bundle includes about 20 hrs video courses with design examples

  1. Introduction
  2. Pipeline Route Selection
  3. Flow Assurance and Hydraulic Sizing
  4. Pressure Containment and Wall Thickness
  5. Local Buckling and System Collapse
  6. On-Bottom Stability
  7. Free Spans
  8. Material Selection and Pipe Fabrication
  9. Thermal Expansion
  10. OPEX / CAPEX and Sizing
  11. Lateral and Upheaval Buckling
  12. Pipeline Geotechnics
  13. Inspection, Maintenance, and Repair

1.Introduction

  • Outline and outcome
    • A brief history of subsea pipeline
    • Comparative economic of transportation methods
    • Subsea pipeline applications
      • Subsea pipeline content
      • Key features
      • Rigid pipelines
      • Pipeline bundles
      • Flexible risers
    • Subsea line pipe common features
    • Design sequence
      • Conceptual studies
      • Basic design
      • Detailed design
      • Installation engineering
    • Common pipeline analyses
    • Pipelaying methods
    • Common vessels involved in the installation
  • Applications
  • Engineering and design
  • Installation4

2.Pipeline Route Selection

  • Outline and outcome
    • Basic concepts
    • Route overriding factors
      • Water depth
      • Environmental loads
      • Seabed condition
      • Prohibited zones
      • Political impacts
      • Crossing other facilities and operations
      • Unique environments
      • Shore crossing characteristics
      • Installation constraints
    • Route survey planning
      • Routine date requirements
    • Route optimization
  • Route selection

3.Flow Assurance and Hydraulic Sizing

  • Outline and outcome
    • Flow assurance overview
    • Phase envelope
    • Fluid physical types
    • Operational problems
    • Flow assurance methodologies
    • Heat transfer
    • Hydraulic design objectives
    • Pipeline sizing
      • Key parameters
      • Key criteria
      • Pressure loss
      • Pressure loss correlation
      • Instance friction factors
      • Ideal and real gases
      • Pumping power and surge pressure
      • Single-phase and multiphase flows
  • Flow assurance
  • Hydraulic design Examples

4.Pressure Containment and Wall-Thickness Calculation

  • Outline and outcome
    • Different load types
    • Internal pressure
    • Hoop stress
      • Thin-walled pipes (Polar coordinate)
      • Thin-walled pipes (Cartesian Coordinate)
      • Thin-walled pipes (Design Practice)
      • Thin-walled pipes
    • Wall thickness-Design code requirements
    • Design philosophies
      • Working stress design
      • Limit state design
      • Ultimate limit state
      • Serviceability limit state
      • Fatigue limit state
      • Accidental limit state
    • Hoop stress and wall thickness calculation
  • Pressure containment and wall thickness
  • Design approaches
  • Wall-thickness calculation examples

5.Local Buckling and System Collapse

  • Outline and outcome
    • Local buckling
    • Local buckling scenarios
    • Elastic collapse due to external pressure
      • Basic theory
      • Practical considerations
    • System collapse-External overpressure only
    • Propagation buckling-External overpressure only
      • Propagation prevention strategies
      • Propagation studies
      • Buckle arrestor design
    • Local buckling-Combined loading criteria
      • Design load effects
      • Load controlled – Internal overpressure
      • Load controlled – External overpressure
      • Displacement controlled – Internal overpressure
      • Displacement controlled – External overpressure
      • Design examples
  • Theory and practice

6.On-Bottom Stability

  • Outline and outcome
    • Stability fundamentals
    • Instability consequences
    • Prevention techniques
    • Loading and resistance
    • Basic theoretical stability design
    • Morison’s equation
    • Practical considerations
    • Dynamic stability analysis
      • Target failure probability
      • Load combinations
      • Current conditions
      • Short term wave conditions
      • Wave directionality and spreading
      • Hydrodynamic load reduction due to permeable seabed
      • Hydrodynamic load reduction due to pipe penetration into the seabed
      • Hydrodynamic load reduction due to trenching
      • Passive soil resistance
      • Soil piping
      • Design criteria
      • Safety factors
      • Stability fundamentals
      • Design Examples

7.Free Spans

  • Outline and outcome
    • Free span and potential sources
    • Prediction of spanning
    • Free span failure modes
    • Free span design load cases
    • Free span analysis, software, output
    • Route preparation
    • Self burial, scour
    • Basic theoretical concept
    • Flow around a cylinder
    • Overview of engineering guideline
    • Review of a Design Code
    • Design Examples

8.Material Selection and Pipe Fabrication

  • Material selection philosophy
  • Material selection in project
  • Important material types
  • Design codes and standards
  • Manufacturing methods
  • Line pipe properties
  • Pipeline fittings
  • Low temperature services
  • Sour services
  • Corrosion resistance
  • Pipeline welding

9.Thermal Expansion

  • Thermal expansion
  • Longitudinal strain
  • Full axial restraint boundary condition
  • Free end restraint boundary condition
  • Partial axial restraint boundary condition
  • Thermal expansion loops
  • Design Examples

10.OPEX/CAPEX and Sizing

  • Review of a full sizing example with balancing the OPEX and CAPEX
  • This sub-topic is built upon earlier sub-topics
  • Comprehensive Design Example

11.Lateral and Upheaval Buckling

  • Global buckling
    • Column buckling
    • Driving force
    • Design conditions
  • General design approach
  • Upheaval buckling
    • Classical approach
    • Finite element analysis
    • Engineering consideration
    • Mitigation Schemes
  • Lateral buckling
    • Initiation strategy
    • Classical approach
    • Cyclic operation
    • Mitigation Schemes
  • Design Examples

12.Pipeline Geotechnics

  • Overview
  • Geotechnical parameters
  • Pipeline embedment
    • Soil loading during installation
    • Pipe penetration analysis
    • Pipe penetration under cyclic loads
    • Lateral resistance of partially embedded pipe
    • Axial resistance of partially embedded pipe
  • Pipeline trenching
    • Popular trenching techniques
    • Engineering challenges
    • Ploughing
  • Properties of trench backfills
    • Natural infill
    • Mechanical backfill
    • Backfill by jetting
  • Axial and transverse response of buried pipelines
  • Thermal properties of soil
    • Measuring Thermal Conductivity
    • Empirical Methods for Determining Conductivity
    • Selection of Thermal Conductivity
  • Physical modeling of pipe-soil interaction
  • Numerical modeling of pipe-soil interaction
  • Structural pipe-soil interaction FEA
  • Continuum pipe-soil interaction FEA

13.Inspection, Maintenance, and Repair

  • Operation
    • Importance
    • Operating philosophy
    • Pipeline security
    • Leak detection
    • Operational pigging
    • Pig type and frequency
    • Pigging operation
    • Pipeline shutdown
  • Inspection
    • Categories
    • Purposes
    • Metal loss inspection methods
  • Maintenance
  • Repair
    • Conventional repair methods
    • General maintenance repair
    • Diverless deepwater repair