The U.S. government has not been shown to have acquired Guyana’s oil or announced a plan to control it. The headline’s “11 billion barrels” refers to two different measures: an estimate of Guyana’s proved oil reserves and a separate estimate of recoverable resources in the offshore Stabroek Block. U.S. interest documented so far involves ExxonMobil, commercial engagement, and congressional scrutiny of U.S. tax policy.
What does the 11-billion-barrel figure mean?
It depends on the category, geography, and date. “Proved reserves” and “recoverable resources” are not interchangeable: they use different definitions and assumptions, and one figure describes Guyana while another concerns a specific offshore block.
| Figure | What it measures | Source and date |
|---|---|---|
| 11 billion barrels | Estimated proved oil reserves for Guyana | U.S. Energy Information Administration, as of January 2024 |
| Nearly 11 billion oil-equivalent barrels | Estimated gross recoverable resource in the Stabroek Block | ExxonMobil estimate cited by the U.S. Department of Commerce in its market guide |
| Just under 11 billion oil-equivalent barrels | ExxonMobil’s estimated Stabroek Block resource base | ExxonMobil, August 31, 2026 |
The first figure is a country-level estimate of proved oil reserves; the other two are block-level estimates of recoverable oil-equivalent resources. Oil-equivalent resource estimates can include hydrocarbons expressed on an energy-equivalent basis, so they should not be restated as proved oil reserves.
Guyana’s Ministry of Natural Resources has emphasized that SEC proved-reserve reporting is a stricter commercial measure shaped by economic assumptions and project maturity. It is not the same as the full discovered resource base. In a February 25, 2026 clarification, the ministry also said ExxonMobil’s reported 2.1 billion oil-equivalent-barrel additions from extensions and discoveries—described as primarily in the United States and Guyana—were a global portfolio figure, not a quantified increase for Guyana. The ministry wrote: “Presenting that single consolidated figure as a definitive ‘Guyana reserves increase’ is inaccurate.”
#1 Best Overall
How much oil has Guyana found, and where?
The offshore Stabroek Block is the focus of the nearly 11-billion-barrel resource estimate. ExxonMobil made the Liza discovery in 2015, and Guyana began producing crude in December 2019. The U.S. Department of Commerce’s International Trade Administration reported 52 oil discoveries across explored Guyanese blocks as of 2024, including 46 in Stabroek.
Who operates the Stabroek project?
Guyana’s government lists the consortium interests as ExxonMobil 45%, Chevron 30%, and CNOOC 25%. ExxonMobil is the operator. These are the companies’ interests in the project; they do not establish that the U.S. government owns the oil or controls the block.
How much oil is Guyana producing?
Guyana’s Department of Public Information reported that national oil production had surpassed 900,000 barrels per day on September 18, 2026. Earlier, on August 21, the government put Stabroek Block production at approximately 900,000 barrels per day. Those figures describe different scopes and reporting dates: national production is not the same as output from one block.
New projects could lift production further
The Government of Guyana said the fifth floating production, storage and offloading vessel, Errea Wittu, arrived in August 2026 for the Uaru development. At that time, the government expected first oil in the fourth quarter of 2026 and production above one million barrels per day as the project came online. That is a forecast, not a confirmed result.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
ExxonMobil said in August 2026 that four major developments had raised installed capacity above 900,000 barrels per day. It named Whiptail and Hammerhead as later projects under construction. Installed capacity is not a guarantee of actual output, and planned startup timing can change.
Why is the U.S. interested in Guyana’s oil?
The evidence points to U.S. corporate and commercial interests, plus oversight of U.S. tax policy—not a government takeover. ExxonMobil, the Stabroek operator, is a U.S.-based company. In May 2026, the Associated Press reported that U.S. Under Secretary for Economic Affairs Jacob Helberg met Guyanese officials to discuss business opportunities involving bauxite and other resources. That meeting indicates broader commercial engagement with Guyana, but does not by itself show a specific U.S. plan to control its offshore oil.
In September 2025, U.S. senators wrote to ExxonMobil asking how payments to Guyana under the 2016 Stabroek Block Petroleum Agreement affected the company’s U.S. federal tax liability. That is evidence of congressional scrutiny of tax treatment. It is not evidence that the U.S. government owns or is seeking to acquire Guyanese oil.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What does Guyana say it wants from oil and gas development?
Guyana’s Natural Resources Minister Vickram Bharrat described a policy shift toward monetizing natural gas, developing downstream value, and improving environmental management. “The shift now is to ensure that we produce and monetize our gas resources,” he said, according to the Department of Public Information on September 18, 2026.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesBest Value
The ministry said the Wales Gas-to-Energy project is designed to move up to 120 million cubic feet of gas per day and support power plants with a combined planned capacity of 600 megawatts. These are government-reported design figures and plans, not evidence that the pipeline or power plants are operating at those levels.
The government has also stated commitments to disclose petroleum revenues through the National Assembly and expand local-content opportunities. Those commitments describe policy aims; the cited government releases do not independently establish how fully they are being achieved. The available reporting also does not provide an independent current assessment of environmental impacts or a full accounting of Guyanese oil revenues.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
