Английская Википедия:Bertha Rogers

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The Lone Star Producing Company 1–27 Bertha Rogers hole or well was an oil-exploratory hole drilled in Washita County, Oklahoma in 1974, and was the world's deepest hole[1] until it was surpassed in 1979 by the Kola Superdeep Borehole, dug by the USSR.

The drilling was started October 25, 1972 and it took Lone Star a little over a year and a half to reach Шаблон:Convert on April 13, 1974. 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 solidified around the drill string, causing the drill pipe to twist-off and a loss of the bottom-hole assembly. The well was plugged back and completed in the Granite Wash from Шаблон:Convert as a natural gas producer.[2]

According to publicly available well records from the Oklahoma Corporation Commission, the Bertha Rogers hole ceased production of natural gas in July 1997 and has since been plugged and abandoned.[3]

References

Шаблон:Reflist Шаблон:Oklahoma-geo-stub