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| трудноизвлекаемые запасы (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) | |||