A modified Mirage GM2000 gantry and MR1500 milling rail are used alongside a pipe clamp with chain tensioning, allowing the diver to clamp the machine on to the conductor to perform window milling for a mud dump vent clamp at the sea bed. Performed using cold cutting, on a 26-1/2" conductor housing 13-3/8" casing and power line in the Forties Delta, Apache North Sea.
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