Environmental problems of the oil and gas industry in Kazakhstan Turgai Alimbaev, Kuralay Yermagambetova, Samal Kabyltayeva, Abilkhan Issayev, Zhadyra Kairat and Zhanna Mazhitova E3S Web of Conf., 215 (2020) 03008 Published online: 02 December 2020 DOI: 10.1051/e3sconf/202021503008