The company is accused of injury, damage and failing to immediately report the accident.
Two people were hurt in the explosion that took place in 2010 in Zemes, a community in southern Romania, and a home was destroyed, the Prosecution Office said in a press release Wednesday.
According to prosecutors, the blast was triggered by gas accumulations caused by landslides in 1992 and the technical works carried out by the company.
OMV Petrom failed to immediately report the accident, they added.
The case will be tried by the Moinesti Court.