Results of investigation at the Miravalles geothermal field, Costa Rica. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica; Parte 2, Muestreo de fluidos pozo abajo [electronic resource]
Geothermal Legacy.
Saved in:
| Online Access: |
Online Access |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Agency for International Development ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1989.
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| Subjects: |
MARC
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| 088 | |a la-11510-ms-pt.2 | ||
| 245 | 0 | 0 | |a Results of investigation at the Miravalles geothermal field, Costa Rica. Resultados de las investigaciones en el campo geotermico de Miravalles, Costa Rica; Parte 2, Muestreo de fluidos pozo abajo |h [electronic resource] |
| 260 | |a Washington, D.C. : |b United States. Agency for International Development ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 1989. | ||
| 300 | |a Pages: (122 p) : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 10/01/1989. | ||
| 500 | |a "la-11510-ms-pt.2" | ||
| 500 | |a "DE90001891" | ||
| 500 | |a Dennis, B.; Corrales, R.; Goff, F.; Grigsby, C.O.; Kolar, J.; Trujillo, P.E. Jr.; Counce, D.A.; Instituto Costarricense de Electricidad, | ||
| 520 | 3 | |a Samples of the geothermal fluids in the Miravalles, Costa Rica, geothermal system were collected from production wellbores using downhole fluid samplers, from flowing wellheads using miniseparators, and from hot springs that discharge in the area. The reservoir fluid at Miravalles is a neutral-chloride-type water, but fumaroles and acid-sulfate springs are present within the main thermal area, and there are bicarbonate-rich hot springs that are clearly related to the neutral-chloride reservoir fluids. Dissolved gases are primarily a mixture of CO₂ with air, but samples collected in the fumarolic areas also contain H₂S. Water-stable isotope analyses suggest local meteoric recharge, and the reservoir fluid shows oxygen isotopic shifts of about 2.5% due to high-temperature oxygen exchange between water and rock. Chemical geothermometer temperatures are consistent with the measured downhole temperature of 220° to 255°C. This pattern of neutral-chloride reservoir fluids with acid-sulfate springs near the source region and bicarbonate-rich chloride hot springs at the periphery of the system suggests a lateral outflow type of hydrothermal system. In addition to the geochemical evidence, temperature profiles from several of the wells show temperature reversals that are characteristic of lateral outflow plumes. We find no evidence for the underlying, higher temperature (300°C) system, which has been suggested by other investigators. 24 refs., 14 figs., 6 tabs. | |
| 520 | 0 | |a Geothermal Legacy. | |
| 536 | |b W-7405-ENG-36. | ||
| 650 | 7 | |a Geothermal Fluids. |2 local. | |
| 650 | 7 | |a Geochemical Surveys. |2 local. | |
| 650 | 7 | |a Chlorides. |2 local. | |
| 650 | 7 | |a Costa Rica. |2 local. | |
| 650 | 7 | |a Geothermal Wells. |2 local. | |
| 650 | 7 | |a Hydrogen Sulfides. |2 local. | |
| 650 | 7 | |a Sulfates. |2 local. | |
| 650 | 7 | |a Chalcogenides. |2 local. | |
| 650 | 7 | |a Chlorine Compounds. |2 local. | |
| 650 | 7 | |a Developing Countries. |2 local. | |
| 650 | 7 | |a Fluids. |2 local. | |
| 650 | 7 | |a Halides. |2 local. | |
| 650 | 7 | |a Halogen Compounds. |2 local. | |
| 650 | 7 | |a Hydrogen Compounds. |2 local. | |
| 650 | 7 | |a Latin America. |2 local. | |
| 650 | 7 | |a Oxygen Compounds. |2 local. | |
| 650 | 7 | |a Sulfides. |2 local. | |
| 650 | 7 | |a Sulfur Compounds. |2 local. | |
| 650 | 7 | |a Surveys. |2 local. | |
| 650 | 7 | |a Central America. |2 local. | |
| 650 | 7 | |a Wells. |2 local. | |
| 650 | 7 | |a Geothermal Energy. |2 edbsc. | |
| 710 | 2 | |a Los Alamos National Laboratory. |4 res. | |
| 710 | 1 | |a United States. |b Agency for International Development. |4 spn. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
| 856 | 4 | 0 | |u http://www.osti.gov/servlets/purl/5531696/ |z Online Access |
| 907 | |a .b5998109x |b 03-06-23 |c 05-28-10 | ||
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| 952 | f | f | |p Can circulate |a University of Colorado Boulder |b Online |c Online |d Online |e E 1.99:la-11510-ms-pt.2 |h Superintendent of Documents classification |i web |n 1 |