How Much Oil Does Venezuela Have, and How Much Is Accessible?
Following the U.S. capture of Venezuelan leader Nicolás Maduro, the country’s struggling nationalized oil industry has emerged as a major topic of focus, along with the possibility of empowering U.S. energy companies to move into the country to revive it. Here’s a deeper look that considers Venezuela’s proven and unproven petroleum reserves and the challenges associated with extracting and refining the country’s oil.
Buried under the surface of Venezuela are the largest proven reserves of petroleum in the world, according to estimates compiled by the Energy Institute and other institutions. Although the country has slightly more than 300 billion barrels of crude oil in its proven reserves—that is, the recoverable amount of oil that can be extracted under current economic conditions, using existing technologies—the grade of the majority of Venezuela’s oil is not easy to market right out of the ground.
Characteristics of Venezuela’s heavy, sour crude oil
The bulk of the country’s petroleum is made up of heavy, sour crude oil—a dark, gloopy, acidic substance that is both high in sulfur and relatively difficult to recover. This type of crude oil is very useful in asphalt production, but it needs to undergo a longer refining process to be made into more lucrative products, such as gasoline and other fuels, compared with lighter crude oil (see also petroleum refining). Most of Venezuela’s heavy oil reserves are found in the Faja Petrolifera del Orinoco (also known as the Faja, or Orinoco Oil Belt), which overlaps much of the Orinoco River valley in the country’s interior.
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Unlike lighter-grade and medium-grade oils, heavy crude oil is more challenging to refine. The most obvious quality of Venezuela’s heavy, sour crude is that it is extremely dark and viscous (meaning that it does not flow easily). Crude oils are commonly classified using the API gravity scale, developed by the American Petroleum Institute, which measures the density of oil relative to that of water, with higher values indicating lower-density oils. Heavy crude oil has a low API gravity and yields smaller amounts of gasoline, diesel, and other fuels than lighter grades.
In addition, Venezuela’s heavy crude has a higher sulfur content, which makes it more acidic (hence the “sour” classification) and thus more corrosive to tanker hulls, pipes, pipelines, and storage tanks compared with a lighter, sweeter (that is, less acidic) grade of oil. The increased corrosion risk requires refining and transportation companies to use stronger, more specialized metals, ceramics, and other materials in their equipment, and this equipment must be maintained or replaced more frequently than materials used in the refining of lighter grades.
History
Venezuela joined OPEC in 1960 as a junior player with respect to proven reserves, which were estimated at fewer than 50 billion barrels at the time. (One barrel holds 159 liters [42 gallons].) This figure lagged behind those of Saudi Arabia, Iraq, and Iran for the remainder of the 20th century. However, continued exploration in the country’s Orinoco Oil Belt (which was first evaluated in 1967) from 2007 and beyond revealed that the region contained more than 300 billion barrels of accessible heavy oil. (Other assessments noted that the country likely contains more than 1 trillion barrels of heavy oil in total—with much of this amount included in the country’s unproven reserves, because it is unreachable or too expensive to extract with existing technology.) Still, this proven reserve figure is a matter of some dispute, with many analysts noting that it was self-reported by the Venezuelan government. However, other reviews summarized in OPEC’s 2025 Annual Statistical Bulletin, the 2024 Country Analysis Brief: Venezuela from the U.S. Energy Information Administration (EIA), and a 2009 fact sheet by the U.S. Geological Survey (USGS) appear to support this claim. The fact sheet also reported that eventually between 380 and 652 billion barrels could be recovered from the region.
Petroleum is Venezuela’s leading export, and the country produced between 900,000 and 1.1 million barrels of oil per day in 2025, which represents less than 1 percent of global oil production. The country’s production capacity reached 3.4 million barrels per day in 1998—which was about 5 percent of total global production at the time—but this was severely curtailed by decades of international sanctions, mismanagement, and a global shift toward solar power, wind power, and other energy-generation technologies in the early 21st century (see renewable energy).
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