Pemex said no injuries were reported, and production from the project was not affected after the gas leak ignited around 5:15 a.m. local time. It was completely extinguished by 10:30 a.m.
The company added it would investigate the cause of the fire.
Ku Maloob Zaap is Pemex’s biggest crude oil producer, accounting for more than 40% of its nearly 1.7 million barrels of daily output.
“The turbomachinery of Ku Maloob Zaap’s active production facilities were affected by an electrical storm and heavy rains,” according to a Pemex incident report shared by one of Reuters’ sources.
Company workers used nitrogen to control the fire, the report added.