https://www.vedomosti.ru/business/news/2012/04/05/petrochina_obsuzhdaet_s_shel_dobychu_nefti_iz_slancev?utm_source=telegram&utm_campaign=share&utm_medium=social&utm_content=petrochina_obsuzhdaet_s_shel_dobychu_nefti_iz_slancev