FILE PHOTO: A pump jack is seen at the Ashalchinskoye oil field owned by Russia’s oil producer Tatneft near Almetyevsk, in the Republic of Tatarstan, Russia, July 27, 2017. REUTERS/Sergei Karpukhin/File Photo
FILE PHOTO: A pump jack is seen at the Ashalchinskoye oil field owned by Russia’s oil producer Tatneft near Almetyevsk, in the Republic of Tatarstan, Russia, July 27, 2017. REUTERS/Sergei Karpukhin/File Photo