Transocean: Marianas water leak plugged, de-mooring ops continue offshore Ghana

By Phaedra Friend Troy

After experiencing a water ingress last week, the Transocean Marianas deepwater semisubmersible drilling rig remains on location offshore Ghana as the rig prepares to move to sheltered waters to determine the extent of the damage. 

"The water ingress into the Marianas has been temporarily plugged," Transocean (NYSE:RIGspokesperson Guy Cantwell told PennEnergy. "The rig remains stable."

On July 6, a water ingress on the deepwater rig was detected, and the drilling staff aboard the Transocean Marianas was evacuated. 

"Demooring and dewatering operations are continuing," Cantwell continued. "Until the next inspection, no estimates, final repairs, duration of the repairs or shipyard location can be determined." 

Able to drill in waters measuring up to 7,000 feet deep, the Transocean Marianas semisub can drill to a total depth of 25,000 feet. 

The rig is currently contracted to Eni, but Kosmos Energy was slated to receive the deepwater semisub for drilling offshore Ghana on July 10. 

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