Which country has heavy oil reserves in the Orinoco Belt?

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Venezuela is the country that possesses the heavy oil reserves located in the Orinoco Oil Belt, also known as the Faja Petrolifera del Orinoco.1

This region, which overlaps much of the Orinoco River valley, contains the majority of the country's heavy, sour crude oil reserves. While estimates vary, the region is recognized for holding a massive endowment of extra-heavy oil and bitumen deposits, with some assessments suggesting the area contains hundreds of billions of barrels of oil. These deposits are distinct from the tar sand deposits found in Canada, which are primarily located in the Athabasca River valley.1234