Petrobrazi Refinery is one of the largest Romanian refineries and one of the largest in Eastern Europe, located near Ploiești, Prahova County having as a main activity the processing of Romanian oil but also has a separate unit specialised in processing chemical products. The refinery had two processing modules with a nominal capacity of 3.5 million tonnes/year each and a total capacity of 7 million tonnes/year. Now only one of the two modules is operational and has a capacity of 4.5 million tonnes/year or 90,000 bbl/d (14,000 m3/d), 1 million tonnes larger due to an investment program from 1999 - 2000. The facility is connected by pipeline to virtually all of the oil fields in Romania and to the Port of Constanța by a pipeline with a capacity of 10,000 tonnes/day.

Ploiești, formerly spelled Ploești, is a city and county seat in Prahova County, Romania. Part of the historical region of Muntenia, it is located 56 km (35 mi) north of Bucharest.