Title: |
Alcohols as Two-Phase Tracers |
Authors: |
Michael C. Adams, Yasuo Yamada, Masahiko Yagi, Christian Kasteler, Phaedra Kilbourn, Nick Dahdah |
Key Words: |
tracer test, alcohols, two-phase tracers |
Conference: |
Stanford Geothermal Workshop |
Year: |
2004 |
Session: |
MODELING |
Language: |
English |
File Size: |
49KB |
View File: |
|
The alcohols methanol, ethanol, n-propanol, and n-butanol
are potential two-phase geothermal tracers.
Their thermal stability ranges from very stable at
high temperatures (>300 o C; methanol) to somewhat
stable at moderate temperatures (~250 o C; n-butanol).
Their distribution between liquid and steam also
varies systematically, with methanol solubility being
very close to that of water (VR=6 at 150 o C) and n-butanol
being more soluble in steam by a factor of
seven. Preliminary, qualitative analysis indicates that
the decay of the alcohols produces shorter-chain
alcohols, giving rise to intriguing possibilities as
reactive tracers. In this paper we present the results
of several largely-unpublished short studies on the
stability of the alcohols that were performed over the
last decade.
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