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Noun Concept
Categories: Unconventional oil
EN
heavy crude oil  Environmental impact of heavy crude oil  extra-heavy oil  extra heavy crude  extra heavy crude oil
EN
Heavy crude oil is highly viscous oil that cannot easily flow from production wells under normal reservoir conditions. Wikipedia
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EN
Heavy crude oil is highly viscous oil that cannot easily flow from production wells under normal reservoir conditions. Wikipedia
Viscous crude oil Wikipedia Disambiguation
Highly-viscous oil that cannot easily flow to production wells under normal reservoir conditions Wikidata