Australia’s Oil Search has cut its full-year production forecast and said its first-quarter revenue fell 14% as output from its key Papua New Guinea LNG (PNG LNG) project fell after a major quake in the region in February.

In a statement on April 17, the company cut its full-year production guidance to 23 million barrels of oil equivalent (MMboe) to 26 MMboe from an earlier estimate of 28.5 MMboe to 30.5 MMboe.

January and March production fell 36.1% to 4.84 MMboe from 7.57 MMboe a year ago. First-quarter production from the PNG LNG project, net to Oil Search, was 4 MMboe, the company said, while revenue for the quarter slipped to $295 million from $343.7 million.

In February, a magnitude 7.5 quake rocked PNG’s energy-rich interior, forcing PNG LNG project operator ExxonMobil Corp. (NYSE: XOM) to shut down operations. Production resumed last week, about two weeks ahead of schedule.

Oil Search has a 29% stake in the PNG LNG project and also resumed operations at its Kutubu field in PNG earlier this month.

The company said it expects 2018 unit production costs to be in the range of $10.50/bbl to$13.50/bbl of oil, a reflecting high proportion of fixed costs in the context of the lower production outlook.