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cement plugging

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  • ongc begins cement plugging operation at bombay high rig

    ONGC begins cement plugging operation at Bombay high rig

    July 20, 2014 21:01 IST

    Mumbai: The process of “cement plugging” the leak of high pressure inflammable gas began today, a day after it was reported at an oil rig of state-owned ONGC at Bombay High off the Mumbai coast,

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