Production at a Chevron platform in Nigeria has been shut in after militants launched an attack.
Chevron told Reuters that its Okan offshore facility in the Western Niger Delta region was “breached by unknown persons” on Wednesday and the company has deployed resources to respond to a spill of undisclosed size.
No injuries or casualties have been reported.
The facility has a daily output of about 90,000 barrels, Bloomberg said.
According to data compiled by Bloomberg, Nigeria’s oil production dipped to 1.7 million barrels per day before the attack, the first time since 1994 that production has fallen to that level.
A group known as the Niger Delta Avengers took responsibility for the attack, Reuters said.
The militant group said in a statement seen by the news wire that they want a larger share of Nigeria’s crude revenues.
Chevron’s General Manager, Policies, Government and Public Affairs Deji Haastrup told the Punch that the shut-in will not affect the company’s crude exports.
“It means that we cannot produce from that particular facility until it has been accessed and repaired. But we will continue to produce from our other assets,” Haastrup told the news site.
Chevron installed the Okan Platform in 1963.
Through Chevron’s principal subsidiary in Nigeria, Chevron Nigeria Limited, the company operates and holds a 40 percent interest in nine concessions under a joint-venture arrangement with the Nigerian National Petroleum Corporation.
Chevron also does business through other subsidiaries in Nigeria.
Chevron’s net daily production in Nigeria averaged 240,000 barrels of crude oil, 236 million cubic feet of natural gas and 6,000 barrels of liquefied petroleum gas in 2014.
Nigeria has been dealing with a series of attacks against its oil infrastructure.
In April, police arrested Seimghale Perekeyi, a Nigerian man suspected of involvement in a deadly pipeline explosion.
Perekeyi allegedly collaborated with four other men to plant a bomb on an Eni operated pipeline.
The explosion killed three maintenance workers in late March as repair work was being conducted at a pipeline in the Olugboboro community in Bayelsa state in the Niger Delta region.
Last October, a security guard died after Nigerian militants launched an attack at a Shell oil flow station in the Delta region.