Hurricane Ida (2021) shut in 96% of Gulf of Mexico crude production and forced at least nine refineries to shut down or cut runs, about 12% of US refining capacity.
Oil Fun Facts: A New Fact Every Day
One sourced oil or energy fact a day, written to be shared. Copy it, or send it straight to X, LinkedIn or Facebook — each post carries its source and a link back. Today's fact is below; the full archive of 85 is further down the page.
Today's Fact
Changes daily at midnight US EasternComing Up & Recent
Schedule posts ahead| Date | Fact | |
|---|---|---|
| Mon, Oct 26 | In 1956 geologist M. King Hubbert predicted US oil output would peak around 1970, and it did, until shale pushed production past that peak decades later. Source: EIA | |
| Sun, Oct 25 | The largest oil spill ever was deliberate: in 1991 retreating Iraqi forces released an estimated 6 to 8 million barrels into the Persian Gulf. Source: Widely cited estimates | |
| Sat, Oct 24 | 'Petroleum' comes from the Latin petra (rock) and oleum (oil): literally 'rock oil'. Source: Merriam-Webster | |
| Fri, Oct 23 | A 2025 Dallas Fed survey found producers need roughly $62 to $70 a barrel to drill a profitable new shale well, but only about $39 to $45 to keep an old one pumping. Source: Dallas Fed Energy Survey | |
| Thu, Oct 22 | Almost all US gasoline contains up to 10% ethanol; because ethanol has about a third less energy per gallon, E10 costs roughly 3% in fuel economy. Source: US Department of Energy | |
| Wed, Oct 21 | IEA member countries that are net oil importers must hold emergency stocks equal to at least 90 days of their net imports. Source: IEA | |
| Tue, Oct 20 | Roughly 60% of the world's oil travels by sea. Source: Industry estimates | |
| Mon, Oct 19 · today | Hurricane Ida (2021) shut in 96% of Gulf of Mexico crude production and forced at least nine refineries to shut down or cut runs, about 12% of US refining capacity. Source: BSEE; EIA | |
| Sun, Oct 18 | About 30% of the world's oil comes from beneath the sea, from shallow Persian Gulf platforms to drillships working two miles down off Brazil and Guyana. Source: EIA | |
| Sat, Oct 17 | The 1973–74 Arab oil embargo roughly quadrupled oil prices, from about $3 to about $12 a barrel, and led to the IEA and the US Strategic Petroleum Reserve. Source: EIA; IEA | |
| Fri, Oct 16 | Deepwater Horizon (2010) is the largest accidental oil spill in history: about 210 million gallons over 87 days, and 11 workers died. Source: US government estimates | |
| Thu, Oct 15 | It takes about 7.3 barrels of typical crude oil to make one metric tonne. Source: BP Statistical Review of World Energy | |
| Wed, Oct 14 | Between mid-2014 and February 2016, WTI crude fell about 75%, from roughly $107 to about $26 a barrel, as surging US shale output flooded the market. Source: EIA | |
| Tue, Oct 13 | Petrochemical feedstock, the raw material for plastics, fertilizers and synthetic fibers, is the fastest-growing use of oil in every major demand outlook. Source: IEA | |
| Mon, Oct 12 | The 'shadow fleet' of tankers carrying sanctioned Russian oil is estimated at 600 to 700 vessels in early 2026, up from about 200 to 300 in December 2022. Source: S&P Global; industry estimates |
Upcoming days are listed newest first, then today, then the past week.
History
14 factsOn August 27, 1859, Edwin Drake struck oil at 69½ feet near Titusville, Pennsylvania, the well that launched the modern American oil industry.
On January 10, 1901, the Lucas gusher at Spindletop, Texas, blew in at roughly 100,000 barrels a day and kicked off the Texas oil boom.
The 1973–74 Arab oil embargo roughly quadrupled oil prices, from about $3 to about $12 a barrel, and led to the IEA and the US Strategic Petroleum Reserve.
In 1956 geologist M. King Hubbert predicted US oil output would peak around 1970, and it did, until shale pushed production past that peak decades later.
OPEC was founded in Baghdad in 1960 by five countries: Iran, Iraq, Kuwait, Saudi Arabia and Venezuela.
Qatar left OPEC in 2019, Ecuador in 2020, Angola in 2024 and the UAE in 2026.
Angola quit OPEC on January 1, 2024, after 16 years as a member, in a dispute over a production quota it said was below its real capacity.
Exxon Valdez (1989) spilled about 11 million gallons in Alaska, far less than Deepwater Horizon, but it led Congress to require double-hulled tankers.
In 1979 Mexico's Ixtoc I well blew out in the Bay of Campeche and flowed for nine months, spilling about 140 million gallons of oil.
The first emergency use of the US Strategic Petroleum Reserve came during Operation Desert Storm in 1991, when 17.3 million barrels were sold.
The first experimental hydraulic fracture was in 1947 in the Hugoton gas field in Kansas; the first commercial frac jobs followed in 1949.
George Mitchell spent 17 years, from 1981 to 1998, and hundreds of wells trying to make the Barnett Shale pay before slickwater fracturing finally cracked it.
Keystone XL spent 13 years in approvals and lawsuits before its permit was revoked in January 2021 and the project was cancelled that June.
In May 2021 a ransomware attack shut down the Colonial Pipeline, which carries roughly 45% of the East Coast's fuel, causing panic buying across the Southeast.
Geography
10 factsCushing, Oklahoma, a town of under 8,000 people, is the delivery point for WTI futures, one of the world's two main oil price benchmarks.
At its narrowest the Strait of Hormuz is only 21 miles wide, with shipping lanes two miles wide each way, yet about a fifth of the world's oil passes through it.
Alaska's North Slope oil travels 800 miles through the Trans-Alaska Pipeline to the ice-free port of Valdez.
The Strait of Malacca carries more oil than the Strait of Hormuz, about 24 million barrels a day versus 21, but it has far more alternative routes.
Henry Hub, the pricing point for US natural gas futures, is a real place: a pipeline hub near Erath, Louisiana, where major gas pipelines meet.
About 30% of the world's oil comes from beneath the sea, from shallow Persian Gulf platforms to drillships working two miles down off Brazil and Guyana.
Most of Kazakhstan's oil exports flow through the CPC pipeline, a line of roughly 1,500 km that crosses Russia to the Black Sea port of Novorossiysk.
In June 2026 about two-thirds of US crude oil imports came from Canada, mostly by pipeline; Venezuela was second at roughly 10%.
Appalachia's Marcellus and Utica shales form the largest natural gas field complex in the United States, at about 35.5 billion cubic feet a day in 2025.
Brazil's pre-salt wells are drilled through about 2 km of water and up to 5 km of rock, including a thick layer of salt.
Industry
9 factsA VLCC, the standard long-haul crude tanker, carries about 2 million barrels of oil.
Roughly 60% of the world's oil travels by sea.
No large greenfield oil refinery has been built in the US since the 1970s; capacity has grown by expanding existing plants.
Nigeria exported crude but imported most of its fuel until the 650,000-barrel-a-day Dangote refinery, Africa's largest, started up near Lagos in 2024.
The 2024 Trans Mountain expansion added about 590,000 barrels a day of Pacific export capacity for Canadian crude.
Gasoline, diesel and jet fuel make up roughly 60% of world oil demand; the rest is mostly petrochemicals, heating and industry.
Alaska's oil output peaked at about 2 million barrels a day in the late 1980s; in 2026 the state pumps about 0.4 million.
The Bakken in North Dakota was the first shale-oil play to reach large scale, from about 2008; the Williston Basin had been a conventional oil region since the 1950s.
Oil wells are now drilled in more than 3,000 meters (10,000 feet) of water.
Prices
2 factsBetween mid-2014 and February 2016, WTI crude fell about 75%, from roughly $107 to about $26 a barrel, as surging US shale output flooded the market.
A 2025 Dallas Fed survey found producers need roughly $62 to $70 a barrel to drill a profitable new shale well, but only about $39 to $45 to keep an old one pumping.
Science
13 factsA barrel of oil is 42 US gallons, about 159 liters. Oil hasn't travelled in real barrels for a century, but prices are still quoted per 42-gallon barrel.
Oil is not made from dinosaurs: it comes mainly from ancient microscopic plankton and algae buried on the seafloor and slowly cooked over millions of years.
LNG is natural gas chilled to −162 °C (−260 °F), which shrinks it to about 1/600th of its volume so it can travel by tanker.
Refining one 42-gallon barrel of crude yields about 45 gallons of products; they are less dense than crude, a gain refiners call 'processing gain'.
It takes about 7.3 barrels of typical crude oil to make one metric tonne.
'Petroleum' comes from the Latin petra (rock) and oleum (oil): literally 'rock oil'.
Shale oil never left its source rock: it stays trapped in impermeable stone until horizontal drilling and fracking crack it open.
A typical shale well loses roughly two-thirds of its peak output within the first year, so drillers must keep drilling just to stand still.
A modern long-lateral shale well uses 10 to 20 million gallons of water, roughly 15 to 30 Olympic swimming pools.
Oklahoma's magnitude-3+ earthquakes jumped from about 20 in 2009 to 903 in 2015, blamed on wastewater disposal wells, not fracking itself, then fell after limits.
US strategic oil is stored in salt caverns hollowed out by pumping fresh water into deep salt formations to dissolve them, a process called solution mining.
Rock caverns for oil rely on a 'water curtain': water seeping in from boreholes above keeps the surrounding rock saturated so the oil cannot escape.
Oil moves through pipelines at walking pace, about 3 to 8 miles an hour, so a barrel takes weeks to cross the United States.
Records
17 factsThe world's largest oil refinery is Reliance's Jamnagar complex in India, at about 1.24 million barrels a day, built mostly to export fuel.
In 2018 the United States overtook Russia and Saudi Arabia to become the world's largest crude oil producer.
On April 20, 2020, WTI crude settled at −$37.63 a barrel, the first negative oil price in history, as COVID-19 demand collapse filled storage at Cushing.
Saudi Arabia's Ghawar, found in 1948, is the largest conventional oil field ever discovered, about 280 km long and 30 km wide.
Safaniya, discovered in 1951 in the Persian Gulf off Saudi Arabia, is the world's largest offshore oil field.
Deepwater Horizon (2010) is the largest accidental oil spill in history: about 210 million gallons over 87 days, and 11 workers died.
The largest oil spill ever was deliberate: in 1991 retreating Iraqi forces released an estimated 6 to 8 million barrels into the Persian Gulf.
US crude production sank to 4.95 million barrels a day in 2008; shale then lifted it to about 13.2 million by 2024.
The US shipped about 111 million tonnes of LNG in 2025, the first country ever to top 100 million tonnes in a single year.
Guyana went from producing no oil in 2019 to about 903,000 barrels a day in April 2026, all from one offshore block operated by ExxonMobil.
Argentina's oil output hit an all-time high of about 887,000 barrels a day in May 2026, with the Vaca Muerta shale supplying roughly 71% of it.
Norway's sovereign wealth fund, built from petroleum revenue, is the world's largest, valued at more than $2 trillion.
Venezuela holds the world's largest proven oil reserves, yet its output has collapsed from about 3.5 million barrels a day in the late 1990s.
China is the world's largest crude oil importer, buying about 11 million barrels a day in 2024.
The 2019 attack on Saudi Arabia's Abqaiq facility briefly knocked out about 5% of world oil supply.
In 2022 the US sold 180 million barrels from its Strategic Petroleum Reserve, the largest release in the reserve's history.
The Permian Basin produced about 6.5 million barrels a day in 2025, more crude than every OPEC member except Saudi Arabia.
Energy Transition
4 factsPetrochemical feedstock, the raw material for plastics, fertilizers and synthetic fibers, is the fastest-growing use of oil in every major demand outlook.
Almost all US gasoline contains up to 10% ethanol; because ethanol has about a third less energy per gallon, E10 costs roughly 3% in fuel economy.
Much of the CO2 injected into Permian oil fields to recover more oil comes from natural underground CO2 domes in Colorado, New Mexico and Mississippi.
The US tax credit for CO2 captured and injected to recover oil was raised to $85 a ton in 2025, matching the rate for straight underground storage.
Weather
10 factsIn 2005, Hurricane Katrina shut in 95% of Gulf of Mexico oil production and destroyed 47 platforms; weeks later Rita shut in 100% and destroyed 66 more.
Winter Storm Uri (Feb 2021) shut in an estimated 3.8 million barrels a day of US crude oil production at its peak, and Texas lost power at the same time.
Hurricane Harvey (2017) barely touched offshore oil, yet cut Gulf Coast refinery inputs by 3.2 million barrels a day, 34%, in one week and lifted US gasoline 28 cents.
Hurricane Ida (2021) shut in 96% of Gulf of Mexico crude production and forced at least nine refineries to shut down or cut runs, about 12% of US refining capacity.
The 2008 hurricane season (Gustav and Ike) shut in roughly 65 million barrels of Gulf of Mexico crude oil and 400 billion cubic feet of natural gas.
The Gulf of Mexico supplies roughly 13% of US crude production, but just over half of all US refining capacity sits on the Gulf Coast.
In February 2021 US natural gas output fell 7%, the largest monthly drop on record, and Texas fell a record 15%, as Winter Storm Uri froze wellheads.
During Winter Storm Elliott (Dec 2022) US natural gas production fell by more than 15 billion cubic feet a day at the peak, just as demand hit about 160 Bcf/d.
A January 2024 Arctic blast cut North Dakota's oil output about 13.5% in a month, to roughly 1.1 million barrels a day; recovery took about a month.
Summer gasoline is blended to a lower vapor pressure, about 9 psi or less, to cut smog-forming evaporation. Winter blends run higher so cold engines start.
Geopolitics
6 factsThe UAE left OPEC and OPEC+ on May 1, 2026, after 59 years, the largest oil producer ever to quit the group.
The 'shadow fleet' of tankers carrying sanctioned Russian oil is estimated at 600 to 700 vessels in early 2026, up from about 200 to 300 in December 2022.
IEA member countries that are net oil importers must hold emergency stocks equal to at least 90 days of their net imports.
China publishes no data on its strategic oil stockpile, so outside figures, like EIA's estimate of roughly 1.5 billion barrels, are estimates.
Oman has never joined OPEC, yet it regularly appears in OPEC+ production decisions as one of the group's voluntary-adjustment countries.
Roughly 80% of the crude that passes through the Strait of Hormuz goes to Asia, led by China, India, Japan and South Korea.
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