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Ancient Chinese Drilling Secrets Inspired America's Oil Wells - Neatorama

As early as the first century BC, industrial workers in China's Sichuan Province were building derricks for wells, but they weren't drilling for oil. While most of the world got salt from ocean water or mines, Sichuan has salty aquifers underneath, and they built wells to bring this brine to the surface. They developed percussion drilling, which harnesses gravity power and patience, but will eventually reward you with salty water. And natural gas. It took hundreds of years to perfect the technol