ONGC planning 2-platform tender at Vasai East

Vol 17, PW 18 (24 Apr 14) Exploration & Production

ONGC will invite tenders in May to build two platforms at its Vasai East oilfield off Mumbai as part of a major redevelopment plan.

On March 24 ONGC's board approved the Rs2476cr ($410m) redevelopment plan, which includes 20 new development wells and a new 30-km pipeline to transport oil from the proposed platforms to the BCP-A platform in the Bassein gasfield, where associated gas will be separated. The first platform will have 16 well slots; the second eight.

ONGC’s material management department wants to award the platform contract by January 2015 and have them constructed in two years. "Installation and commissioning could take another six months," says an ONGC manager.

"The platforms will be ready by 2018." He adds the company plans to connect 12 oil wells and two water injectors to one platform and six oil wells to the other.

ONGC will drill each of the 20 planned wells to a true vertical depth of 1735 metres, in water depths of up to 60 metres, using a 350-feet independent leg cantilever jack-up. "Each well will also have an inclined (horizontal) section, with the depth decided closer to drilling," we hear.

ONGC estimates Vasai East holds total initial oil in place of 69m tonnes and can produce an additional 17,000 b/d of oil and 1.5m cm/d of associated gas after drilling the 20 planned wells.