Seals for Geothermal Roller Drill Bits

[+] Author and Article Information
R. R. Hendrickson, C. Carwile, L. Matson, R. W. Winzenried

Terra Tek, Inc., Salt Lake City, Utah

J. Pressure Vessel Technol 99(4), 614-618 (Nov 01, 1977) (5 pages) doi:10.1115/1.3454582 History: Received June 24, 1977; Online October 25, 2010


A significant factor contributing to short bit life and attendant high costs for geothermal drilling is the lack of seals for elevated temperatures. To assist development of a high-temperature seal, a test facility was constructed to simulate the seal environment in a roller bit during geothermal drilling. Although none of the tested elastomers appear suitable for compression seals above 200°C, extensive testing was performed to determine their exact limits. Several new heterogeneous seal designs were found usable to higher temperatures.

Copyright © 1977 by ASME
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