Indian state-owned Oil & Natural Gas Corporation (ONGC) has lined up United Arab Emirates-based Shelf Drilling’s jack-up Trident XII for a drilling campaign on its Mumbai High fields offshore India’s west coast.

The three-year contract, the day rate for which was not divulged, is scheduled to start in the fourth quarter of this year.

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Last month, Oslo-listed rig owner Shelf Drilling secured a three-year contract from ONGC for another of its jack-ups, the J T Angel. This charter, which will also see the rig working at the operator’s flagship Mumbai High asset, will begin in the fourth quarter.

ONGC currently deploys more than 30 offshore drilling units, most of which are chartered from leading rig operators.

However, on 23 April Upstream reported the Indian giant is increasingly looking to buy its own new-generation offshore rigs, marking a shift from its earlier strategy that overwhelmingly favoured chartered units.

ONGC is understood to have recently kick-started a process to acquire new jack-up rigs alongside its charter requirements.