Tags Viet Nam National Oil and Gas Group (PetroVietnam) and Gazprom VN, Russian companies ink gas deal Thursday, Mar 13, 2014 The PetroVietnam Gas Corporation (PV GAS) will buy liquefied natural gas from Russia''s Gazprom M&T for a warehouse project at Thi Vai Port in the southern Ba Ria-Vung Tau Province.