Strake Energy

Strezhevoy Refinery

Sumatec Oil and Gas

Surge Global Energy

Susser Petroleum Company

Suvar-Kazan

Svab

Syzran Oil Refinery

Tagulskoe

Taneco

Tarasovsky Coal

Tarkhovskoye

Tartu Oil Group

Tasweeq

Tatneft - Neftekhimservis

Tatneft-AKtiv

Tatneft-Nao

Tatneft-Trans

Stratford Belmont

Subsoil Astana Oil and Gas

Superoil

Surgutneftegaz

Sutan-Neft

Suzun

Synthesis Petroleum

Taas-Yuryakh Neftegazdobycha

Taimura

Taoil

Taraz Oil Refining

Tarkosaleneftegaz

Tasbulat Oil Corporation

Tatneft

Tatneft Azs Severo Zapad

Tatneft-Azs-Zapad

Tatneft-Samara

Tatnefteotdacha