The main differences between Brent crude oil and American crude oil are as follows:

First, the trading market is different. Brent crude oil is listed on the London Mercantile Exchange, and American crude oil is listed on the New York Mercantile Exchange.

Second, the valuation range is different. At present, except for some oil accidents in the Middle East and the Far East, most of the crude oil exported to Europe, such as the North Sea, Africa, Latin America, Canada, and some Middle East and the Far East, are denominated in Brent crude oil. However, American crude oil is only priced for American crude oil, which has a strong regional nature.

Third, the price is different. American crude oil is mainly light crude oil from the Middle East, which is difficult to exploit, low in cost and good in quality. The crude oil distributed in petroleum is mined at sea, which is difficult and costly, so its futures price has been higher than that of new york light crude oil.

China is the first country to discover and apply oil in the world. Shen Kuo, a famous scholar in the Song Dynasty, put forward outstanding views on the knowledge of ancient geology and paleontology in China. His view is earlier than that of western European scholars who first realized that fossils are biological remains. When Shen Kuo was once ordered to inspect Hebei West Road, he found that there were many snail shells and egg-shaped stones between the cliffs of Taihang Mountain, thus inferring that it was originally an Archean seashore, which was made up of seashore shells and sediment, and correctly inferring the changes of land and sea according to the remains of paleontology. Shen Kuo arrived in Yanzhou (now Yan 'an). During his tenure, he discovered and inspected Lu Yan's oil reserves and uses. He said, "Lu Yan has oil. As the old saying goes, Gaonu County produces fertile water, which is also the case. Born in water, sand and stones are mixed with spring water, forcing people out. The natives collected it in a jar with a pheasant tail bag. It looks like pure paint and burns like hemp, but the smoke is very thick and the curtains are all black. If it is suspected that the smoke is available, try to sweep the coal into ink. Black as paint, ink does not come loose. It is a great achievement, and it is also known as' Yanzhou Stone Liquid'. This thing will be popular all over the world after it is given. At most, it is covered with oil, born in endless land, and sometimes it is exhausted. "

Judging from the above records, Shen Kuo not only discovered oil, but also knew its use. Although his so-called use at that time focused on the manufacture of tobacco and ink, he did predict that "this thing will be popular in the world", and this idea has been verified today. Today, the word "oil" is also used by him, and he wrote China's earliest "oil poem"-"Yanzhou poem": there is much snow in Erlang Mountain, and there are many people. Everything is fine, clothes are not old, and oil is like Luoyang dust.