Rospromneft

Roxi Petroleum

Rusgaz Oil

Rusgazneft

Rusgroup

Rusoil

Rusplan

Russia Export Center

Russng

Rustoplivo

Rusvellgrup

Ruswell Oil Company Limited

Ryazan Oil Refinery

Sadki-Oil

Sagiz Petroleum

Sakhatek

Sakhoil

Sal-Oil

Rossoks

Ruoil-Eco

Rusgazdobycha

Rusgeoservis

Rusneftegaz

Rusoil Group

Russ Trading

Russneft

Rustek-Petroleum

Rusveiko

Rusvietpetro

Ruvaks

Sadakoil

Sagiz Oil

Sakhaneft

Sakhavostokneftegaz

Sakmara Investneft

Salikhovneft