Qatargas, one of Qatar’s top two exporters of liquefied natural gas would complete scheduled maintenance on two LNG production facilities by the end of May, according to reports.

The report said that work on Qatargas train 3, which has already started, would be complete by the end of next week, a company source told Reuters. Work on Qatargas train 4, which has yet to start, would be completed in the last week of the month, he added.

Qatargas 2 train 4, which is a joint venture between Qatar Petroleum and ExxonMobil, produces 7.8 million tones of LNG a year, most of which is destined for Britain’s South Hook LNG import terminal. Qatargas 1 train 3, in which France’s Total also has a stake, has a capacity of 3.2 million tones a year and primarily supplies Japan and Spain.

Qatar is considered the world’s largest exporter of LNG, which is gas chilled to liquid for export on specially designed tankers. The Gulf Arab state has two LNG exporters, Qatargas and Rasgas, whose growing LNG output has helped create a global glut and driven down gas prices in Europe over the past year.