Title:

TRACER TESTING AT DIXIE VALLEY, NEVADA, USING 2-NAPHTHALENE SULFONATE AND 2,7-NAPHTHALENE DISULFONATE

Authors:

Peter E. Rose, Stuart D. Johnson, and Phaedra Kilbourn

Key Words:

Dixie Valley, naphthalene sulfonate

Geo Location:

Dixie Valley, Nevada

Conference:

Stanford Geothermal Workshop

Year:

2001

Session:

Tracers

Language:

English

File Size:

120KB

View File:

Abstract:

The decay kinetics of the candidate tracers 2-naphthalene sulfonate and 2,7-naphthalene disulfonate was studied under laboratory conditions that simulate a hydrothermal environment, with neither compound exhibiting any decay after one week at 330oC. These data indicate that these compounds are more thermally stable than any of the previously studied polyaromatic sulfonates. Both of the tracer candidates were successfully tested in a field study at the Dixie Valley, Nevada, geothermal reservoir. In addition to being environmentally benign, affordable and very thermally stabile, these two compounds were shown to have excellent detection limits of approximately 200 parts per trillion by standard HPLC and fluorescence detection methods.


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