The word oil comes from China. In 977 AD, the word “petroleum” appeared in the “Taiping Guangji” compiled by the Northern Song Dynasty. The official name of “petroleum” is based on the book “Mengxi Bi Tan” written by Shen Kuo, an outstanding scientist in the Northern Song Dynasty, because this oil “was born in the sand and gravel in the water, mixed with spring water, and came out in confusion”.
Before the word “petroleum” appeared, there were various names for oil at home and abroad, such as “the devil’s sweat” and “glowing water” in foreign countries, while in China it was called “shizhi water”, “fiery fire”, etc. Oil”, “Stone Paint”, etc.
It has to be said that the color of oil is very colorful, including dark red, golden yellow, dark green, black, brown-red, to transparent; the color of oil is determined by the content of colloid and asphaltene contained in the oil. The higher the content, the more color. deep. However, dark oil of different degrees accounts for the absolute majority, almost all of which are in the world’s major oil and gas basins.