Pipelines Completed for Vashishta, S1 Fields
McDermott International, Inc. and LTHE, a wholly-owned subsidiary of Larsen & Toubro Limited (L&T), have completed an engineering, procurement, construction and installation (EPCI) contract for the development of ONGC's Vashishta and S1 gas fields, located off the southeastern coast of India.
The companies were responsible for the engineering, supply and installation of a series of pipeline-end terminations (PLETs) and inline tee structures (ILTs), a pipeline-end manifold structure (PLEM), rigid jumpers and approximately 50 km (30 miles) of umbilicals. The pipeline scope included 93 km (58 miles) of 14-inch dual rigid pipelines extending from the shallow water shore line to a maximum water depth of 700 meters (2,300 ft).
To complete the installation, McDermott deployed three vessels, Derrick Barge 30, Lay Vessel North Ocean 105 and North Ocean 102, along with its trademarked portable spoolbase at the LTHE base in Kattupalli, India to fast track the production of pipeline stalk for loading onto the vessels.
The Vashishta field is projected to produce 9.56 bcm of natural gas over a period of nine years, with the S1 field expected to deliver 6.22 bcm over a period of eight years.
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