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An Overview of Silica Scaling Reduction Technologies in the Geothermal Market

Author

Listed:
  • Rochelle Longval

    (Blue Spark Energy, Calgary, AB T1Y5W4, Canada)

  • Rauan Meirbekova

    (ICETEC, Árleynir 2-8, 112 Reykjavík, Iceland)

  • Jason Fisher

    (Blue Spark Energy, Calgary, AB T1Y5W4, Canada)

  • Audrey Maignot

    (ICETEC, Árleynir 2-8, 112 Reykjavík, Iceland)

Abstract

Renewable energy sources play a vital role in the energy mix with geothermal energy providing an opportunity to harness the natural heat coming from the Earth for sustainable power production. As innovative drilling technologies come to market, it is easier to extract heat from various localities across the globe, leading to significant development in the geothermal sector. The economic viability of this resource can be significantly impacted when energy output declines due to scale deposition. Scale formation is a major challenge in the exploitation of geothermal wells, particularly in liquid-dominated geothermal fields. One of the most robust forms of scale build-up common to higher temperature geothermal wellbores and surface equipment for power production is silica scaling. Silica is one of the Earth’s most abundant elements that can precipitate from brine due to various factors. The accumulation of scale deposits significantly impacts the lifespan and efficiency of surface equipment and geothermal wells by restricting fluid flow, thus reducing efficiency and performance. To guarantee the peak performance and longevity of geothermal systems, it is essential to implement a strategic maintenance plan for scaling reduction in geothermal systems. Throughout this review, relevant case studies highlight scaling reduction methods for silica scale in subsurface wellbores and surface facilities.

Suggested Citation

  • Rochelle Longval & Rauan Meirbekova & Jason Fisher & Audrey Maignot, 2024. "An Overview of Silica Scaling Reduction Technologies in the Geothermal Market," Energies, MDPI, vol. 17(19), pages 1-29, September.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:19:p:4825-:d:1486492
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