History of crude oil
Different forms of petroleum were used even in ancient times, such as for embalming and for making mortar or medicine.
Oil wells were drilled in China even in 347 AD. The rudimentary drill bits, made of hard rock, were fixed to bamboo posts.
The first commercially successful oil well was drilled by former railway conductor Edwin L. Drake in Titusville, Pennsylvania, in 1859. One and a half years later the daily production of the well reached 160 tons.
Although even whiskey barrels were used early on, a 42-gallon barrel, which first appeared in 1482 during the reign of English king Edward IV and was originally used for storing fish, became the standard oil barrel.
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