Seawater Intake System Design, Engineering, Procurement, Construction, and Installation
South Pars Gas Field Development – Phase 12
Delta Offshore Technology proudly contributes to the development of the South Pars Gas Field – Phase 12, delivering advanced engineering and construction solutions for the seawater intake system. Commissioned by Daelim-Kayson-Sazeh JV (DSK), this critical infrastructure project supports the cooling operations for the largest gas development phase in the South Pars field, located south of Iran, east of Kangan Port.
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As a trusted leader in offshore engineering, Delta Offshore Technology executed the design, procurement, construction, and installation of the offshore components with precision and efficiency. The project highlights Delta’s ability to integrate innovative engineering techniques with environmental protection, ensuring operational excellence while minimizing ecological impact.
With a focus on cutting-edge technology, sustainable practices, and technical excellence, Delta Offshore Technology continues to drive successful delivery of complex offshore infrastructure projects, reinforcing its position as an industry leader.
Project Overview
Project Overview
As part of the South Pars Gas Field Development – Phase 12, located south of Iran near Kangan Port, Daelim–Kayson–Sazeh Joint Venture (DSK) initiated the construction of an advanced seawater intake system to supply cooling water to the onshore processing facilities.
Find Out More... Read More...Delta Offshore Technology, one of Iran’s leading offshore contractors, successfully executed the design, procurement, construction, and installation of the offshore components of the seawater intake system. The system was engineered to meet the demanding cooling requirements of the largest development phase of the South Pars Gas Field while minimizing environmental impact and ensuring long-term operational reliability.
Seawater Intake System Design
Seawater Intake System Design
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Intake Pipelines:
Seawater is conveyed through two 2.0-meter-diameter HDPE pipelines, each approximately 1,200 meters in length, providing a continuous and reliable supply of clean seawater to the onshore intake basin.
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Outfall Pipeline:
Heated discharge water is safely returned to the sea via a 2.0-meter-diameter, 200-meter-long HDPE outfall pipeline, ensuring thermal dispersion and environmental balance. -
Environmental Protection:
Advanced filtration and screening systems prevent the intake of marine organisms and suspended particles, ensuring that only clean seawater is drawn from the seabed while safeguarding the marine ecosystem.
Innovative Engineering and Installation Techniques
Innovative Engineering and Installation Techniques
Delta Offshore Technology applied advanced engineering methodologies to enhance system efficiency, integrity, and installation performance:
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Grout-Injected Ballasting System:
- o Grout was injected into core-tube pipes within the HDPE pipelines to achieve uniformly distributed ballast weight.
- This approach significantly reduced hydrodynamic drag and minimized installation pulling forces compared to conventional external ballast systems, thereby preserving pipeline structural integrity.
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Float-and-Sink Installation Method:
The HDPE pipelines were fabricated onshore, floated to the offshore installation site, and precisely positioned using a controlled float-and-sink technique. -
Trenching and Backfilling:
Pipelines were installed within pre-excavated subsea trenches and backfilled to protect against external hazards such as anchor drag, seabed movement, and mechanical impact.
Project Outcome
Project Outcome
The project was completed on schedule and in full compliance with stringent technical, safety, and environmental standards. The seawater intake system now delivers a reliable and efficient cooling water supply for South Pars Phase 12, while ensuring safe and environmentally responsible discharge back into the marine environment.
Key Benefits of the Project:
Find Out More... Read More...This project highlights Delta Offshore Technology’s proven capability to deliver innovative, sustainable, and high-performance offshore infrastructure solutions, reinforcing its leadership in marine pipeline engineering and installation.
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Environmental Compatibility:
Advanced filtration systems and non-invasive installation techniques minimized ecological impact. -
Enhanced Pipeline Stability:
Uniform ballast distribution improved long-term stability and reduced operational risks. -
Operational Efficiency:
Innovative installation methods lowered installation loads and enhanced overall system performance and durability.