UPDATE 1-Apache shuts platform after oil release into Gulf of Mexico
(Adds background about Apache Gulf of Mexico assets)
Aug 7 (Reuters) - Apache Corp said it shut down an oil platform after an accidental discharge of crude oil into the Gulf of Mexico.
The company, in a filing with the U.S. National Response Center, said the discharge from an exploration and production platform near Grand Isle, Louisiana, was due to an oil release from a vent boom.
The incident occurred on Tuesday and the release was secured, according to the filing.
Officials at the company and the U.S. Coast Guard were not immediately available to discuss the incident.
Apache has struck a deal to sell its Gulf of Mexico shelf operations and properties to Fieldwood Energy LLC, an affiliate of Riverstone Holdings, for $3.75 billion.
It was not clear if the platform that was shut down is included in the sale to Fieldwood.
Apache said its shelf portfolio comprises more than 500 blocks with 1.9 million net acres and year-end 2012 estimated proved reserves of 133 million barrels of oil and natural gas liquids and 636 billion cubic feet of natural gas.
Apache is retaining a 50 percent stake in the unexplored portions of the properties.
(Reporting by Scott DiSavino in New York and Shrutee Sarkar in Bangalore; Editing by Jane Baird and John Wallace)