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Taming a wild geothermal research well in yellowstone national park

Robert O. Fournier·Larry M. Pisto·Bruce B. Howell·Roderick A. Hutchnson
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Abstract

In November 1992 the valve at the top of a U.S. Geological Survey drill hole in Yellowstone National Park parted from the casting as a result of corrosion. This allowed uncontrolled venting of boiling water and steam from the well at an estimated liquid flow rate of about 25-50 gallons per minute. A flow diverter assembly was designed, fabricated and installed on the well within 16 days, which allowed drill rods to be safely stripped into the well through on annular Blow-Out Preventer. Once this was accomplished it was a relatively routine matter to set a packer in the casting and cement the well shut permanently. The drill hole was brought under control and cemented shut within 18 days of the wellhead failure at a total cost of $47,066, which was about $5,000 less than anticipated.

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Robert O. Fournier, Larry M. Pisto, Bruce B. Howell, Roderick A. Hutchnson. 1993. Taming a wild geothermal research well in yellowstone national park. https://pubs.usgs.gov/publication/70017982

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