The tenders cover survey, ­design, engineering, procurement, fabrication and commissioning of the platforms, which will be ­installed off India’s west coast.

The WO 16 cluster fields are near the SH process complex in the Mumbai High field, and lie in water depths of 75 to 80 metres.

ONGC requires one nine-slot wellhead platform for WO 16, two six-slot platforms for SB-14 and ­­ B-119-121d, one four-slot platform for WO 15 and another three-slot platform for WO 5.

The