FILE PHOTO: Oil rigs are seen at Vaca Muerta shale oil and gas drilling, in the Patagonian province of Neuquen, Argentina January 21, 2019. REUTERS/Agustin Marcarian/File Photo
FILE PHOTO: Oil rigs are seen at Vaca Muerta shale
FILE PHOTO: Oil rigs are seen at Vaca Muerta shale oil and gas drilling, in the Patagonian province of Neuquen, Argentina