Kinetics of fluorescein decay and its application as a geothermal tracer

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Geothermics (International Journal of Geothermal Research and its Applications); (United States)

DOI:https://doi.org/10.1016/0375-6505(91)90005-G· OSTI ID:7239572

Adams, M C; Davis, J ^[1]

---

1. Univ. of Utah Research Inst., Salt Lake City, UT (US)

This paper reports on fluorescent which is a dye used to trace the path of injected fluids through geothermal reservoirs. The authors have measured its thermal stability at temperatures up to 300{degrees} C in hydrothermal autoclaves at various fluid compositions, pHs, and oxygen concentrations. The results of these experiments indicate that fluorescein will decay less than 10% during a one month tracer test in geothermal reservoirs with temperatures below 210{degrees} C. For tracer test involving longer times and/or higher temperatures, the activation parameters presented in this study can be used to correct for thermal decay. These parameters were applied to a tracer test conducted at the Dixie Valley, Nevada geothermal system to correct for the thermal decay of fluorescein and to deduce the effective temperature of the injection-production flow path.

• OSTI ID: 7239572
• Journal Information: Geothermics (International Journal of Geothermal Research and its Applications); (United States), Journal Name: Geothermics (International Journal of Geothermal Research and its Applications); (United States) Vol. 20:5; ISSN GTMCA; ISSN 0375-6505
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150200 -- Geology & Hydrology of Geothermal Systems
150906* -- Geothermal Engineering-- Reservoir Stimulation & Extraction Technology
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
DYES
FLUORESCEIN
GEOTHERMAL SYSTEMS
HYDROXY ACIDS
HYDROXY COMPOUNDS
INJECTION WELLS
ISOTOPE APPLICATIONS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHENOLS
POLYPHENOLS
REINJECTION
STABILITY
TEMPERATURE EFFECTS
TESTING
TRACER TECHNIQUES
WELLS