Zigong's Shenhaijing Salt Well: Historic Depth Drilling and Salt Production
The Shenhaijing Salt Well in Zigong, Sichuan, completed in 1835, was the first artificially drilled well to exceed 1,000 meters, showcasing the region's rich history of salt production that dates back over 2,000 years. Utilizing bamboo tools and human power, the well exemplified advancements in drilling technology during the Tang and Song dynasties, while the natural gas released during brine extraction was harnessed for evaporation processes. By the Qing dynasty, Zigong had established itself as a prominent center for salt production.
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The Shenhaijing Salt Well in Zigong, Sichuan, China, completed in 1835, was the first artificially drilled well to exceed 1,000 meters using bamboo tools and human power. This well exemplifies the region's long history of salt production, essential for preservation, taxation, and trade.
Zigong developed around inland brine, with early salt wells dating back over 2,000 years. By the Tang and Song dynasties, drilling technology advanced with bamboo casings and wooden derricks. The region's natural gas, released during brine extraction, was used to fuel the evaporation process. By the Qing dynasty, Zigong was known as the
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