U.S. Coast Guard Petty Officer Bill Colclough tells CNN that 12 people from the production platform are in water immersion suits as they await rescue.
Colclough told CNN there are reports the production platform is still on fire.
"We don't know what caused the rig to catch on fire," he told CNN, noting the incident is under investigation.
Asked about concerns regarding oil leaks or pollution, Colclough said "there are reports the rig was not actively producing any product, so we don't know if there's any risk of pollution."
The incident comes nearly five months after a separate explosion on a BP rig in the Gulf triggered oil leak disaster.
[Posted at 11:43 a.m.] U.S. Coast Guard Petty Officer Bill Colclough tells CNN that all 13 workers involved in the production platform explosion are accounted for, but one person is injured.
Coast Choppers are on the way to the site 80 miles south of Vermilion Bay.