Wedgl Company

World Square Resources Group

X Global

Xcon Oil and Gaz Company

Yakutia-Gaz

Yambuloil

Yashin Co Ltd

Yenisei-Neft

Yugnaftatrans

Yugoil

Yugrapromgeofizika

Yukola-Neft

Yumoil

Yuzhno-Okhteurskoe

Yuzso

Zapadno-Novomolodezhnoe

Zenit-Service

Zhuldyz Munai

Westoil

Worldwide Distribution Consortium

X-Oil

Yakut Oil

Yakutneftegaz

Yarinvest

Yekaterinburg Fuel Company

Yug-Oil-Service

Yugnefteresurs

Yugra-Holding

Yukateks Oil

Yumioil

Yurkovich Petrochemical

Yuzhuralmetkom

Zahrat Al Arz Refined Oil Product Trading

Zapsibneftprodukt

Zhaiyk Oil and Gas

Zic Oil and Gas