McDermott International has completed the installation and startup of the Vashishta and S1 gas fields, under an engineering, procurement, construction and installation (EPCI) contract awarded by ONGC.
McDermott together with consortium partner LTHE, a wholly owned subsidiary of Larsen & Toubro, was responsible for the engineering, supply and installation of a series of pipeline end terminations (PLETs) and in-line tee structures (ILTs), a pipeline end manifold structure (PLEM), rigid jumpers and approximately 50 kilometers of umbilicals.
The pipeline scope includes 93 kilometers of 14-inch dual rigid pipelines extending from the shallow water shore line to a maximum water depth of 700 meters.
McDermott deployed three of its specialist vessels to complete the installation phase, namely Derrick Barge 30, Lay Vessel North Ocean 105 and North Ocean 102.
“I’d like to take this opportunity to congratulate ONGC in achieving this important first gas milestone. The success of this project confirmed that our consortium with LTHE has performed well in delivering the best in-market solution for our client,” said Ian Prescott, McDermott’s vice president for Asia. “We look forward to building on this strategic collaboration for future projects in India.”
The Vashishta field is estimated to produce 9.56 billion cubic meters (bcm) over a period of nine years with peak production reaching 3.55 million metric standard cubic meters a day (mmscmd) during the first five years. The S1 field is expected to deliver 6.22bcm over a period of eight years with a peak production of 2.2mmscmd for the first five years.
Both fields are located off the Amalapuram coast in India.