Bertha Rogers

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[2] until it was surpassed in 1979 by the Kola Superdeep Borehole, dug by the USSR.

Bertha Rogers Well
Location
LocationBurns Flat, Dill City, Oklahoma, US
stateOklahoma
CountryUS
Coordinates35.31°N 99.19°W / 35.31; -99.19[1]
Production
ProductsNatural Gas
TypeGas Well
Greatest depth31,441 feet (9,583 m)
History
Opened1974
Closed1997
Owner
CompanyLone Star Producing Company

The drilling was started October 25, 1972 and it took Lone Star a little over a year and a half to reach 31,441 feet (5.9547 mi; 9,583 m) 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 11,000 to 13,200 feet (3,400 to 4,000 m) as a natural gas producer.[3]

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.[4]

References

  1. Dyman, T.S.; Nielson, D.T.; Obuch, R.C.; Baird, J.K.; Wise, R.A. (1990). "Summary of Deep Oil and Gas Wells and Reservoirs in the U.S." (PDF). United States Geological Survey. p. 12. Retrieved January 9, 2020.
  2. "Anadarko Basin in Depth". 10 April 2021.
  3. "Oklahoma Corporation Commission completion report (form 1002A) dated September 3, 1974" (PDF). Archived (PDF) from the original on March 7, 2016. Retrieved December 1, 2018.
  4. "Bertha Rogers #1-24".
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