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Subsea Engineering and training experts

Since 1988

Jee Star Logo Construction of subsea pipelines

Construction of subsea pipelines

About the course

This course is a must if you need to improve your knowledge of offshore pipeline installation techniques. Enhance your appreciation of the capabilities of the latest pipe-lay vessels and equipment and gain confidence in identifying the best technical solutions for your projects. 

Explaining a variety of pipe-lay and pipeline protection methods for rigid and flexible risers, this course will develop your ability and confidence to select the most suitable method for different scenarios. Associated activities including surveying, diving and pre-commissioning are discussed, as well as the latest methods for decommissioning pipelines. This course also covers the construction process for risers, spools, stalk-ons, pipeline end manifolds (PLEMs) and terminations (PLETs) and alternative installation methods such as mechanical connectors.

Learning outcomes

  • Summarise technical aspects of offshore pipeline installation with confidence
  • Select the most appropriate construction methods for different scenarios
  • Suggest mitigation options for issues affecting pipeline installation
  • Measure protection requirements
  • Appreciate the associated health, safety and environmental implications
  • Incorporate legal, quality and commercial considerations for offshore construction

View course contents

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course bar chart Level Advanced
timer icon Duration 4 Days
clock Study Hours 28
world icon Location
Aberdeen, Online, Houston
Also available in house

Upcoming dates

calender Aberdeen
3 October 2017 - 6 October 2017
Book now
calender Aberdeen
6 February 2018 - 9 February 2018
Book now
calender Online
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About the Tutors

Stuart Joynson

Stuart has over 35 years’ experience in the oil and gas industry with specialist knowledge in project engineering and construction. He has particular expertise in flowline bundle fabrication, landfall construction, pipeline installation, trenching, marine outfalls and tanker terminals.

Stuart teaches the Construction of subsea pipelines and Landfalls and marine terminals courses.

About the Tutors

John French
MEng, CEng, MIMechE

John has been working in the oil and gas industry since 2002 and is responsible for overseeing all design projects, from pre-FEED studies through to detailed design engineering. John’s current focus is on developing low-cost solutions to reduce installation and development costs for marginal fields.

Jee Star Logo Construction of subsea pipelines - course contents

Day 1


  • What is S-lay?
  • S-lay vessel types
  • S-lay process
  • S-lay market and vessels
  • Insulated lines
  • Lay curve control

Pipe supply, welding, NDT and ECA

  • Line pipe supply and specifications
  • Welding methods
  • Welding procedure
  • NDT
  • ECA

Day 2


  • What is J-lay?
  • J-lay sequence
  • J-lay projects
  • J-lay vessels
  • J-lay performance
  • Rapid pipe welding
  • Mechanical connectors
  • J-lay from drilling rig

Bundles and towed installation

  • What are bundles?
  • Bundle design
  • Bundle fabrication
  • Towhead structures
  • Towing methods
  • Insulation and heating systems
  • Deep-water bundles
  • Pros and cons of bundles
  • Surface tow

Installation of flexibles

  • Unbonded flexibles installation process
  • Umbilical cables
  • Bonded hoses


  • What is reel-lay?
  • Reel-lay process
  • Reel-lay market and vessels
  • Special considerations
  • Technical analysis supplement

Day 3


  • Pull ashore into cofferdam
  • Pull offshore from onshore construction site
  • Directionally – drilled landfalls 


  • Flanged connection by diver
  • Hyperbaric welding
  • Diverless tie-ins
  • FEA of flanges


  • Gauging and flooding
  • Hydrotesting
  • Dewatering, air and vacuum drying
  • Testing of valves and controls

Management systems

  • Law
  • QA
  • Commercial

Health, safety and environment

  • Health and safety management
  • Risk assessment
  • Health and safety
  • Environmental


  • Survey methods
  • Survey operations

Day 4

Seabed modification

  • Sweeping
  • Rock removal
  • Protection
  • Rock dump
  • Concrete mattresses
  • Protection structures
  • Crossings

Post-lay trenching and burial

  • Ploughing
  • Jetting
  • Cutting
  • Cable trenching
  • Trench transitions
  • Backfilling

Diving and ROV operations

  • Diving and equipment
  • ROV operations

Decommissioning and abandonment

  • Legislation
  • Decommissioning in-situ
  • Recovery
  • Re-use
  • Costs

  The instructor is very knowledgeable and speaks very clear making him very easy to understand  

Tengku Dhalan (Design) Facility Engineer, Chevron

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