Home›Unconventional oil›Тяжёлая нефть🌐РусскийEnglishEspañolFrançaisРусскийالعربيةفارسی中文日本語EntityQ15280487· pop 7· linked from 427 articlesТяжёлая нефтьAlso known as extra heavy crude oilhighly-viscous oil that cannot easily flow to production wells under normal reservoir conditionsAvailable in 7 languagesEspañol日本語РусскийالعربيةUkrainianفارسیvia Wikidata sitelinks · CC0ConnectionsviscosityEntityoil refineryEntityCategoriesUnconventional oil