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Report | March 2012

Fast-track offshore project

Essar Projects will complete the Rs 1,064 crore D1 development project for ONGC by end-March 2012. R Srinivasan reports.

Essar Projects had announced the completion of its Rs 1,064 crore D1 development project for ONGC by end-March 2012. The project includes installation of three offshore platforms, laying of subsea pipelines to connect the three platforms to the existing floating production, storage and offloading (FPSO) through a pipeline end manifold (PLEM). All new platforms, the PLEM and the existing D1 platform will be connected with a network of subsea rigid and flexible pipelines and composite cables totalling about 14.5 km.

The company is completing this project on a fast-track basis within 24 months for the client. The scope of work included engineering, procurement, construction, installation and commissioning of the three unmanned four-legged fixed jacket SMART platforms – D-1B, D-1C and D1-D at depths of approximately 90 metres, 200 km off Mumbai.

Commenting on the project, Alwyn Bowden, President and CEO, Essar Projects, said, “The D1 project bears testimony to the engineering and execution capabilities of Essar Projects team in implementing a project of such scale in the Indian offshore environment on a fast-track basis.”

PCB Nair, CEO & MD, Essar Offshore & Subsea, a division of Essar Projects, said, “We have successfully executed many projects in Mumbai High in the past. The D-1 development project represents a technical and fast-track project execution achievement for the team, given the size and complexity of the project. This is also the largest offshore project that we have ever executed.”

The D-1B platform will receive 35,000 bopd of crude produced by D-1, D1-C and D1-D platforms and this will then be transferred for processing to the D-1 field FPSO via the PLEM. Each platform has two main parts – the jacket and deck. The jackets for each of the three platforms were fabricated at the CUEL yard in Laem Chabang, Thailand, and the three decks were fabricated at the Profab yard in Batam, Indonesia. About 17,000 tonnes of steel were used in fabrication and the jackets and decks were transported over 3,500 nautical miles to Bombay High. The jackets are embedded at a depth of 90 metres in the sea bed and the decks are placed on the jacket to complete the platform.

One of the jackets has already been installed and subsea lines of 14.5 km have been laid to connect the three platforms. Installation of the second and the third platforms will be completed by mid-March and the D-1 project is to be completed by end-March. The D-1B deck weighs approximately 1,500 MT and is to be installed on the D- 1B jacket to complete the installation of D-1B platform in entirety.
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