Oil touches almost everything: the price of a flight, the cost of shipping a parcel, the inflation figure that central banks obsess over. Its price can swing several percent on a single headline. Behind the noise, though, a small set of forces does most of the work.
Brent and WTI: the two benchmarks
When you see “the oil price”, it’s almost always one of two crude benchmarks:
- Brent — based on crude from the North Sea, used to price a large share of the world’s oil trade.
- WTI (West Texas Intermediate) — US crude delivered at Cushing, Oklahoma, the main benchmark for North America.
Both are light, low-sulphur crudes, and they usually trade within a few dollars of each other. The gap between them widens or narrows with transport costs, US inventories and pipeline bottlenecks.
Supply: who pumps and how much
OPEC+
The Organization of the Petroleum Exporting Countries, together with allies such as Russia, coordinates production targets. When the group agrees to cut output, prices tend to rise; when members produce above their quotas or the group loosens limits, prices can slide. Their meetings are among the most watched events on the oil calendar.
US shale
American shale producers can bring new wells online within months, much faster than traditional projects. That flexibility acts as a partial brake on prolonged price spikes. The weekly US rig count is a rough gauge of how much drilling is going on.
Disruptions
Wars, sanctions, attacks on shipping lanes, hurricanes in the Gulf of Mexico and pipeline outages can take supply off the market suddenly. Markets price in the risk quickly, sometimes before any barrels are actually lost.
Demand: how much the world uses
Demand follows economic growth. Strong manufacturing, busy airports and a growing middle class in large emerging economies push consumption up; recessions push it down. The sharpest example in living memory came in April 2020, when lockdowns crushed demand so fast that storage filled up and the expiring WTI futures contract briefly settled below zero.
Inventories and the dollar
Every week the US Energy Information Administration publishes stockpile data, and a surprise build or draw can move prices within minutes. Because oil is priced in US dollars, a stronger dollar makes it more expensive for buyers using other currencies, which tends to weigh on prices — another link between commodities and the forex market.
The main drivers in one table
| Factor | Usually pushes prices… |
|---|---|
| OPEC+ production cuts | Up |
| Rising US shale output | Down |
| Supply disruption or conflict | Up, often sharply |
| Global slowdown | Down |
| Unexpected inventory build | Down |
| Stronger US dollar | Down |
If you trade it
Oil is volatile, gaps over weekends and reacts violently to news. Retail traders usually access it through futures, ETFs or CFDs, and each behaves differently over time because of how futures contracts roll from month to month. Keep position sizes modest and understand how margin and stop outs work before holding a leveraged position through an OPEC meeting. Basic chart reading helps too; candlesticks are where most traders start.
For official supply and demand data without anyone’s spin, the EIA petroleum pages are the primary source most analysts use. For a calmer commodity, compare oil with gold and bitcoin as stores of value.
