Geothermal well stimulation and silica based deposit removal

A method of removing built up aluminosilicate scale in a conduit of a geothermal plant reinjection well in which a fluid comprising mineralized water is flowing. The method comprises alternately treating the fluid in the conduit with an acid composition and a caustic composition via a lance, wherein...

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Bibliographische Detailangaben
Hauptverfasser: Carey, William S, Muller, Logan, Bluemle, Michael, Hewson, Paul, Lynch, Maria Nydia, Slijp, Peter
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of removing built up aluminosilicate scale in a conduit of a geothermal plant reinjection well in which a fluid comprising mineralized water is flowing. The method comprises alternately treating the fluid in the conduit with an acid composition and a caustic composition via a lance, wherein treating is carried out without stopping the fluid flow in the conduit. The caustic composition may comprise a chelator and a surfactant dependent on analysis of the scale.