A good number of prominent companies are government-owned. Major players in the upstream oil & gas market are Saudi Aramco, Gazprom, ExxonMobil, Rosneft, PetroChina, BP, Sinopec, Royal Dutch Shell, Total S.A, and Chevron. Some of the Independent energy & power companies, are Carrizo Oil & Gas Inc, Laredo Petroleum, Newfield Exploration, Matador Resources, and Devon Energy. In the ex... https://www.datamintelligence.com/research-report/oil-gas-upstream-market