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High-temperature Seals and Lubricants for Geothermal Rock Bits
R. R. Hendrickson
其他書名
Final Report
出版Sandia National Laboratories., 1981
URLhttp://books.google.com.hk/books?id=LH20MwEACAAJ&hl=&source=gbs_api
註釋High temperature seals (elastomeric and mechanical) and lubricants were developed specifically for journal-type rock bits to be used in geothermal well drilling. Results at simulated downhole conditions indicate that five selected elastomeric seals (L'Garde No. 267, Utex Nos. 227, 231 and HTCR, and Sandia Glow Discharge Coated Viton) are capable of 288°C (500°F) service. Two prototype mechanical seals did not achieve the life determined for the elastomeric seals. Six lubricants (Pacer PLX-024 oil, PLX-043 oil, PLX-045 oil, Geobond Oil, and Geobond Grease) demonstrated 316°C (600°F) capability. Recommendation is made for full-scale simulated geothermal drilling tests utilizing the improved elastomeric seals and lubricants.