Construction of subsea pipelines - Oil and Gas


Available dates:
13-16 September 2022


Application course


About the course

This course provides learners with an opportunity to improve their knowledge of offshore pipeline installation techniques. It also allows them to enhance their appreciation of the capabilities of the latest pipe-lay vessels and equipment and gain confidence in identifying the best technical solutions for the projects.

Explaining a variety of pipe-lay and pipeline protection methods for rigid and flexible risers, this course will develop learners’ ability and confidence to select the most suitable method for different scenarios. Associated activities including surveying, diving and also pre-commissioning are discussed in this course. 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.

At a glance

Available dates

13-16 September 2022 


4 days (28 study hours)


Virtual classroom




£2,300 plus VAT

Early Bird

Book up to six weeks in advance of the start date of your chosen course to take advantage of the Early Bird discount

Interested in this course?

Let us send you some more information.

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

- Tengku Dhalan, Facility Engineer, Chevron

Jee course work is on point, refreshing and well packaged  

- Kolawole Owolabi, Project Engineer, Chevron Nigeria


Learning outcomes

  • Summarise techniques of offshore pipeline installation, and identify the strengths and limitations of each
  • Evaluate construction methods for different scenarios
  • Identify protection requirements for subsea pipelines
  • Identify the health, safety and environmental implications of pipeline installation
  • Describe legal, quality and commercial considerations for offshore construction


Course structure

Day by day content

Day one


  • 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 procedure
  • Welding methods
  • NDT
  • ECA

Day two


  • 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


Reel l-lay

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

Day three


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



  • Flanged connection by diver
  • Hyperbaric welding
  • Diverless tie-ins



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


Quality, safety, health and environment (QSHE)

  • Law
  • QA
  • HSE management
  • Risk assessment
  • Health
  • Safety
  • Environmental



  • Survey methods
  • Survey operations

Day four

Seabed modification

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


Post-lay trenching and burial

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


Diving and ROV operations

  • Diving and equipment
  • ROV operations

What past delegates have said

Good pipeline course for anyone involved in offshore projects


The course on construction of subsea pipelines provided a real feel of construction

Odimaa Douglas, Shell

Videos were really resourceful and giving illustration that are close real life and practical experience

Abdulmumikn Andulazeez, Shell

Construction of subsea pipelines - Oil and Gas

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