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Construction of Subsea Pipelines


Mastering Offshore Pipeline Installation

Participate in a comprehensive exploration of subsea pipeline construction techniques. Delve into S-lay and J-lay methods, detailing their processes, vessel types, and specific applications. Address the installation of flexibles, reel-lay techniques, and critical landfall procedures. Learn about pre-commissioning steps like gauging and hydrotesting, as well as quality, safety, health, and environmental considerations crucial in pipeline construction. Additionally, cover seabed modification, post-lay trenching, and the use of diving and ROV operations, providing a thorough understanding of the end-to-end process of subsea pipeline construction.

Interactive Learning

Interactive Learning
Engage in hands-on activities and interactive exercises, designed to keep you abreast of the latest QSHE regulations 

Industry insights
Industry insights
Gain industry insights into various installation techniques, including S-lay and J-lay.

Networking Opportunities

Networking opportunities

Network with like-minded individuals and industry experts working within pipeline installation.

Enjoy exclusive access to Jeenius platform, a valuable learning resource.

Bridging the Gap between Theory and Practice

Embark on a journey that transcends traditional learning with our Subsea Pipeline Construction course. This programme is uniquely designed to bridge the gap between theoretical knowledge and practical application, turning 'knowing' into 'doing.' It's not just about understanding the techniques; it's about mastering them in real-world scenarios. This course equips you with hands-on skills and practical insights, preparing you to face the challenges of subsea pipeline construction head-on. Ideal for those seeking not just to learn but to apply, it's a transformative experience that elevates your professional capabilities to new heights.

Module Highlights

Day 1 - Laying Techniques and Pipeline Fabrication

Explore S-lay processes, vessel types, and market dynamics. Delve into insulated lines, lay curve control, and essential aspects of pipe supply, welding, Non-Destructive Testing (NDT), and External Corrosion Assessment (ECA). Gain a comprehensive understanding of line pipe specifications, welding procedures, methods, and the crucial elements of NDT and ECA in pipeline fabrication.

Day 2 – Mastering Offshore Pipeline Techniques: J-Lay and Reel-Lay Insights

Explore rapid pipe welding, mechanical connectors, and J-lay from drilling rigs. Understand bundles, design, fabrication, towhead structures, insulation, and heating systems. Evaluate the installation of flexibles, including unbonded processes, umbilical cables, and bonded hoses. Delve into reel-lay, its process, market, vessels, and special considerations for offshore pipeline installation.

Day 3 – Critical Phases in Offshore Pipeline Installation

Explore landfalls, covering pulling ashore into cofferdam, from onshore construction sites, and directionally-drilled landfalls. Dive into tie-ins with flanged connections by divers, hyperbaric welding, and diverless tie-ins. Understand pre-commissioning activities like gauging, flooding, hydrotesting, dewatering, and testing of valves. Address Quality, Safety, Health, and Environment (QSHE) considerations, including law, QA, HSE management, risk assessment, and environmental aspects. Conclude with survey methods and operations for comprehensive insights into offshore pipeline installation.

Day 4 – Enhancing Offshore Pipeline Stability and Safety

Delve into seabed modification, covering sweeping, rock removal, protection, rock dumping, concrete mattresses, protective structures, and crossings. Explore post-lay trenching and burial techniques, including ploughing, jetting, cutting, cable trenching, trench transitions, and backfilling. Conclude with a focus on diving and ROV operations, understanding the equipment and procedures involved in ensuring the stability and safety of offshore pipelines.


Who should attend?


  • 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


  • 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


  • 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

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

Learning Outcomes

  • Summarise offshore pipeline installation techniques and their strengths and limitations
  • Evaluate construction methods for different scenarios
    Identify common causes of cable failures and their potential consequences.
  • Determine protection requirements for subsea pipelines
  • Assess health, safety, and environmental implications of pipeline installation
  • Describe legal, quality, and commercial considerations for offshore construction
Subsea ROV

Meet Your Expert Tutors

Andy Stevenson

Andy Stevenson

Meng (Hons), CEng, FIMechE

Andy brings over 15 years of rich experience in the offshore oil & gas and renewables sectors to his role as a chartered mechanical engineer. His expertise lies in the design of bespoke deck equipment and subsea tools, a field in which he has demonstrated exceptional skill and innovation. Andy's proficiency extends to complex systems such as pipelay, cable lay, and associated trenching systems, making him a leading figure in the engineering of advanced subsea solutions. This depth of experience in design and engineering places him at the forefront of the latest industry developments and practices. 

As a tutor, Andy leverages his extensive industry knowledge in the construction of subsea pipelines course. His teaching approach is deeply rooted in practical application, ensuring that delegates not only understand the theoretical aspects of subsea construction but also how these concepts are applied in real-world scenarios. Andy excels in translating complex engineering processes into accessible and engaging learning experiences. His classes are enriched by his firsthand experiences and insights, providing delegates with an in-depth understanding of the challenges and solutions in subsea pipeline construction. Through his guidance, Andy empowers students with the knowledge and skills necessary to excel in the rapidly evolving world of offshore engineering. 

Graham Wilson

Graham Wilson

MEng (Hons), CEng, MIMechE

Graham, serving as Jee's Head of Integrity Management, has over 20 years of industry experience. His credentials are further enhanced by his role as a Chartered Mechanical Engineer and a Fellow, showcasing his profound expertise and commitment to the engineering field. Graham's specialisations in integrity management, design, fishing interaction studies, and verification have positioned him at the forefront of the industry. Additionally, his significant contribution as the Convenor of ISO WG 17 illustrates his pivotal role in shaping international standards, further testament to his global influence and technical acumen. 

In his capacity as Head of Late Life, Graham brings a strategic and comprehensive approach to managing the challenges of aging infrastructure and decommissioning processes. This role complements his extensive teaching responsibilities, where he leads courses in integrity management, corrosion defect assessment, and decommissioning programme development and execution. His ability to integrate real-world scenarios with theoretical knowledge offers a dynamic and immersive learning experience. Graham's teaching not only covers the essential principles but also delves into the complexities of managing the lifecycle of engineering projects.  

Start Dates

Location Start Date End Date Number of Days Timings
Virtual (via MS Teams)
23rd January 2024 
26th January 2024
09:00 to 16:30 (with regular breaks)
Virtual (via MS Teams)
21st May 2024 
24th May 2024

09:00 to 16:30 (with regular breaks)

Virtual (via MS Teams)
21st October 2024
24th October 2024

09:00 to 16:30 (with regular breaks)

Your Course Fee



  • Live Classes: Dive into live, interactive sessions focusing on real-time learning and discussions with peers and industry experts.

  • Access to Jeenius Platform: Unlock a realm of additional resources, peer forums, and expert interactions extending your learning beyond the classroom.

  • Industry Expert Interaction: Network and learn from seasoned industry professionals throughout the course, discussing real-world challenges and solutions.

Find Out more