Evaluation of Seals for a Geothermal Logging Tool
- Key words
- Drilling; Logging Tools; Seals
- Conference
- Geothermal Resources Council Transactions
- Year
- 1978
- Session
- Well logging; Seals
- Language
- English
Abstract
The seal efficient and environmental resistance of various elastomeric o-rings and a metallic joint that were immersed in geothermal brine of water at elevated temperatures and pressures were determined. A leakproof seal was maintained with a stainless steel Conoseal-joint for 100 hours in water and 24 hours in geothermal brine at 275°C and 34.5 MPa (5000 psi). Only very small quantities of moisture penetrated o-ring seals made from Kalrez, a perfluoroelastomer, ethylene/propylene rubber and a Parylene C coated Viton o-ring. All other rubber seals failed catastrophically.
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