Bertha Rogers
From Infogalactic: the planetary knowledge core
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The GHK Co. 1–27 Bertha Rogers hole or well was an oil-exploratory hole drilled in Washita County, Oklahoma in 1974, and was formerly the world's deepest hole until in 1979 surpassed by the Kola Superdeep Borehole, dug by the former USSR.
It took GHK two years to reach 31,441 feet (9,583 m), a depth of almost six miles. During drilling, the well encountered enormous pressure – almost 25,000 psi (172,369 kPa). No commercial hydrocarbons were found before drilling hit a molten sulfur deposit (which melted the drill bit), and the well was plugged and abandoned.[1]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found., Energy Issues, December, 2005.
