uniform recovery of reserves(" Проблема равномерности выработки запасов в пласте большой мощности и с высоким коэффициентом расчлененности решалась применением селективных ГРП с изоляцией притока из высокопроницаемой кровельной части пласта" evermore)
hard-to-extract reserves(Gazprom Neft also has a joint venture, Salym Petroleum Development (SPD), with Shell in Western Siberia and a technology cooperation agreement with Schlumberger. These ventures could be hampered by the new sanctions, as they aim at developing hard-to-extract shale oil reserves, mainly from Bazhenov deposits. shikisai)