* Mariner: platform was nonproducing, being decommissioned
* Fire quickly extinguished says Coast Guard
* Second fire in two weeks on a Mariner platform
(Recasts with Mariner comment)
HOUSTON, Sept 9 (Reuters) - Mariner Energy ME.N said it extinguished a small fire on a non-producing platform being decommissioned in the Gulf of Mexico on Thursday without any injuries or spilling any oil.
Thursday's fire was the second in two weeks on a Mariner Energy platform in the Gulf of Mexico. A fire on another Mariner platform on Sept. 2 forced 13 workers to evacuate but also without any injuries or oil leak.
The fire on the non-producing platform at South Marsh Island 136, about 75 miles (120 km) south of Morgan City, Louisiana, was small and was snuffed with a water hose and a hand-held fire extinguisher, Mariner spokesman Patrick Cassidy said .
"It wasn't in production, the wells were plugged, and we were in the stage of decommissioning it," he said. "The platform was not evacuated, there was no spill and there were no injuries."
He said Mariner was resuming abandonment operations at the facility. It has not been in production since before 2006, when Mariner acquired it from Forest Oil FST.N, Cassidy said.
Earlier, the U.S. Coast Guard said the the fire was out before it could get there. (Reporting by Erwin Seba and Kristen Hays; Editing by Marguerita Choy)