India’s Oil & Natural Gas Corporation (ONGC) has achieved first gas from its Block 98/2 deep-water development in the Krishna-Godavari basin, offshore India.

Project engineering contractor McDermott International considers this to be the country’s largest subsea project so far.

The American engineering company secured the end-to-end project delivery contract from ONGC in October 2018.

Delivering early first gas involved tying back one well to the existing ONGC Vashishta facility.

McDermott’s package covered supply of all subsea production systems. These included 26 deepwater trees, and the installation of subsea umbilicals, risers and flowlines (SURF) equipment in water depths of about 1,300m.

The company said the water depth of 1,300m is the deepest of any ONGC operations offshore India.

McDermott Asia Pacific senior vice-president Ian Prescott said: “McDermott is a leader in the subsea space and we have worked incredibly hard to fast-track the production to early first gas.

“To deliver this accelerated schedule is an exceptional achievement and testament to the benefits of the collaborative commercial model put forward to ONGC. Production from a deepwater well in less than 14 months is an outstanding achievement for the deepwater exploration and production industry.

“In line with the ‘Made in India’ approach for the 98/2 project, a substantial amount of engineering and project management has been led from McDermott’s operations in Chennai. This local approach is a new initiative in the deepwater subsea space for McDermott. We look forward to continuing our work in the Bay of Bengal as we help ONGC meet India’s growing energy demands.”

In April 2018, McDermott International completed the installation and start-up on the Vashishta and S1 fields in Andhra Pradesh, India.