Isolation valves aid Bombay High riser replacements

UNDER A CONTRACT FROM OIL & National Gas Corp., Bombay, Asian Marine Contractors (AMC) recently completed replacement of two risers and subsea isolation valves on the NF platform, Bombay High, with use of remotely operated pipeline isolation systems. Click here to enlarge imageAMC, a subsidiary of Halliburton Co.'s Brown & Root Energy Services, Houston, says this is the first time in the world that such state-of-the-art technology has been used subsea for online replacement at such high pressure.Two modulesThe turnkey contract, says AMC, recognized the need to reduce production loss from Bombay High during the riser change out and subsea valve installations. The risers and valves wer...

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