Silica scaling in cooled silica saturated geothermal water: Comparison between Wairakei and Ohaaki geothermal fields, New Zealand

In contrast, at Ohaaki, scaling observed in rapidly cooled separated water aged for 30 min at 80 °C (total silica 840 mg/kg) suggested that the injection of this fluid would result in impairment at or close to the well bore. Therefore, no subsequent field injection trial was undertaken at Ohaaki.