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  Evaluating the Efficiency of Scaling Inhibitors in Geothermal Fluids at High Pressures and High Temperatures

Zotzmann, J., Regenspurg, S. (2015): Evaluating the Efficiency of Scaling Inhibitors in Geothermal Fluids at High Pressures and High Temperatures - Proceedings, World Geothermal Congress (Melbourne, Australia 2015), 5.

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27024_Zotzmann u. Regenspurg_Evaluating the Efficiency.pdf (Ergänzendes Material), 458KB
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 Urheber:
Zotzmann, Jörg1, 2, Autor              
Regenspurg, Simona1, 2, Autor              
Affiliations:
1ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146052              
24.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146039              

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Schlagwörter: geothermal fluid, calcite scaling, environmentally friendly inhibitor, inhibitor efficiency, high temperature
 Zusammenfassung: Mineral precipitation (scaling) such as sulfates and carbonates is a well-known phenomenon in geothermal plants. Scaling can damage plant equipment (e.g. heat exchangers) or reduce the injectivity of the reservoirs and thus the operation lifetime of such installations. Reduction or prevention of scaling is commonly achieved by injecting scaling inhibitors into the geothermal circuit. However, most highly efficient scale inhibitors are toxic and persistent in the reservoir. In this context, the use of environmental friendly, non-toxic, and degradable scaling inhibitors has become attractive. In this study, a scale inhibitor based on ecologically friendly polycarboxylates was examined with respect to its efficiency to inhibit calcite scaling under high pressure/high temperature (HPHT) conditions. Efficiency tests were carried out in a static batch experiment applying an autoclave system equipped with a sensor monitoring the pH-value. This system allows measurements at pressures and temperatures up to 150 bar and 125 °C. The results were compared with those from efficiency tests under normal ambient conditions.

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 Datum: 2015
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: GFZPOF: p3 PT5 Georesources
GFZPOF: p3 PT7 Ene
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Veranstaltung

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Titel: World Geothermal Congress
Veranstaltungsort: Melbourne, Australia
Start-/Enddatum: 2015-04-19 - 2015-04-25

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Titel: Proceedings
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Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: 5 Identifikator: -