01So What Even Is Crude Oil?

Think of it like freshly squeezed orange juice... except it's black, smells terrible, and you can't use it for anything yet.

Crude oil is basically the raw stuff we pull out of the ground. It comes from either onshore wells (those bobbing pump jacks you see in movies set in Texas) or offshore rigs (massive platforms sitting in the ocean). Either way, what comes out is a messy cocktail of different hydrocarbons all mixed together.

You can't just pour crude oil into your car. It needs to be refined first, which means separating it into useful products like gasoline, diesel, jet fuel, and even the asphalt on roads. But here's the thing: crude oil is what gets traded on global markets. When you see "oil prices" in the news, they're almost always talking about crude, not the refined stuff.

02How Refining Works

This is where crude oil becomes actually useful.

Refineries heat crude oil to extremely high temperatures inside a giant tower called a fractional distillation column. Different products separate out at different temperature levels. The lighter stuff floats to the top, and the heavier stuff sinks to the bottom.

The lightest fractions (petroleum gas) come off at around 20°C, while the heaviest residues need temperatures above 400°C. That's why some types of crude oil are more valuable than others: if a crude is naturally "lighter," it yields more of the expensive stuff like gasoline with less effort.

03Not All Crude Is Created Equal

Two properties matter most: how heavy it is and how much sulfur it contains.

The Major Benchmarks

Not every barrel of oil is priced individually. Instead, the market uses a few major "benchmark" crudes as reference points, and other crudes are priced at a premium or discount relative to them.

The two benchmarks that dominate global headlines are Brent and WTI. Both are light, sweet crudes, which makes them ideal reference points. But they serve different markets and that's where things get interesting.

04Brent vs WTI: Why Two Prices?

Same planet, different pricing logic.

Brent crude is the global benchmark. It prices oil traded across Europe, Africa, the Middle East, and much of Asia. It's a "seaborne" benchmark, meaning it reflects the cost of oil that travels by tanker across oceans. When shipping routes get disrupted, Brent feels it immediately.

WTI (West Texas Intermediate) is the North American benchmark. It's priced at Cushing, Oklahoma, which is basically a landlocked hub of pipelines and storage tanks in the middle of the US. WTI is more tied to domestic American supply and demand. If the US has plenty of oil sitting in storage or is producing lots of shale oil, WTI can stay relatively calm even when the rest of the world is panicking.

Normally, Brent and WTI trade within a few dollars of each other. But when global shipping routes get messed up? That gap blows wide open.

That $9 gap doesn't sound like much on paper. But in oil markets, where hundreds of millions of barrels trade daily, that spread is enormous. At its peak in early April, the gap hit roughly $15 per barrel. Normally it sits around $3-5.

05Why Oil Prices Are Going Crazy Right Now

Two words: Strait of Hormuz.

Here's the short version: the US and Israel launched airstrikes against Iran in late February 2026. Iran retaliated by effectively shutting down the Strait of Hormuz, the narrow waterway between Iran and Oman where a massive chunk of the world's oil flows through every single day.

When that strait closes, oil from Saudi Arabia, Iraq, the UAE, Qatar, and Kuwait gets stuck. These are some of the biggest producers on the planet, and they suddenly can't get their product to market. The result is the largest oil supply shock in the history of the oil market.

Timeline of the Price Chaos

06Why Brent Is So Much Higher Than WTI

The gap tells you exactly where the pain is concentrated.

Remember the structural difference? Brent reflects global seaborne oil markets. WTI reflects the American domestic market. When the Strait of Hormuz gets shut, here's what happens:

Brent rockets upward because the oil that normally flows through the strait (headed to Asia, Europe, and beyond) is suddenly gone. Shipping costs spike. Insurance premiums go through the roof. Asian buyers, who absorb the biggest share of Middle Eastern oil, start scrambling for alternatives. All of that gets priced into Brent.

WTI rises too, but not as fast. The US is the world's largest oil producer and has been ramping up shale output. The government started releasing oil from the Strategic Petroleum Reserve in March. US inventories are above average. So while WTI is definitely elevated by the global panic, it's got a buffer that Brent doesn't have.

Asia is getting hit hardest. Countries like Japan, South Korea, India, and China depend heavily on Middle Eastern crude flowing through Hormuz. They're now competing for alternative supply from Russia, West Africa, and the Americas, which drives prices up everywhere.

07Why Should You Care?

Oil touches everything. Literally everything.

When oil prices spike, the effects ripple across the entire economy. It's not just about paying more at the pump. Oil is baked into the cost of manufacturing, shipping, food production, plastics, pharmaceuticals, and construction materials. A sustained oil shock raises costs across the board, which is exactly what central banks don't want when they're already wrestling with inflation.

For consumers, the most visible effect is higher fuel prices. US retail gasoline has been running close to $4.30/gallon at its peak in April, while diesel has touched $5.80/gallon. In countries more exposed to the Hormuz disruption, the impact is even steeper.

For investors, oil price spikes create winners (energy companies, Gulf state sovereign wealth funds) and losers (airlines, logistics firms, energy-importing nations). The Brent-WTI spread also creates arbitrage opportunities for traders who can move physical barrels between regions.