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| difficult oil (mascot) | |||
| reserves difficult to recover; HTR (MichaelBurov); HTR reserves (MichaelBurov) | |||
| hard-to-recover reserves (A1_Almaty); challenged reserves (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) | |||
| oil resources whose production is problematic | |||
| tight reserves (Aiduza); hard-to-recover (Aiduza) | |||
| hard to recover reserves | |||
| Russian thesaurus | |||
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| ТрИЗ (MichaelBurov) | |||
| трудноизвлекаемые запасы: 5 phrases in 3 subjects |
| Oil / petroleum | 1 |
| Oil and gas | 3 |
| Sakhalin | 1 |