Geo-Coat Webinar :Part 2

Tue, 25 August, 2020

The Geo-Coat consortium invites you to its 2nd webinar on mitigating the corrosion challenges in aggressive geothermal environments - "Material characterisation and testing of coatings for corrosion challenges in high-temperature geothermal power production" on 21st October, 13:00 UK time

Materials used in high-temperature geothermal wells and equipment that are in direct contact with the geothermal fluid can be subjected to corrosion, which can result in high costs associated with materials, labour, and production efficiency of the well. The corrosion aggressiveness of geothermal fluids depends on the chemical composition and physical character of the fluid, e.g., acidity (pH) and the exploitation parameters such as temperature, pressure, and flow rate. The main corrosive agents in the geothermal fluid are the dissolved gasses H2S, CO2 and chloride ions. In some geothermal systems, HCl gas is present, and condensation and re-boiling can cause localised enrichment of hydrochloric acid and, consequently, severe corrosion of materials in the systems. Various components and equipment used in the production of geothermal power from high-temperature geothermal fields can experience different corrosion attacks as well as wear and erosion.

An overview of tribological and corrosion laboratory tests and microstructural analysis will be presented for different novel coatings systems developed for various components of the high-temperature geothermal power production system. Following a discussion on what future development of coating materials is needed for the advancement, safe operation, and increased efficiency of geothermal power production in the world.

Who should attend?

Sigrun Nanna Karlsdottir is a Professor in Mechanical Engineering at the University of Iceland. She received her B.S. degree in Mechanical and Industrial Engineering in 2003 from the University of Iceland and her Ph.D. degree in Materials Science and Engineering from the University of Michigan in the USA in 2007. Dr Karlsdottir's research focus is on material performance in challenging environments, specifically regarding corrosion and scaling in geothermal environments. Her recent involvement in projects in national and international collaboration includes corrosion studies of coatings in high-temperature geothermal environments and research on corrosion behaviour of corrosion-resistant alloys in simulated high temperature deep geothermal environments. She has published over 40 papers in her field, received research grants from international and national research funds and consulted Icelandic energy companies in matters related to corrosion and material selection in geothermal environments. Dr Karlsdottir is the co-founder of Gerosion Ltd, an engineering consulting and R&D Company, where she has served as a COB since 2014. She is also board member of the Geothermal Association of Iceland (GAI) since 2018 and served as a session chair in 2017 and co-chair in 2018 for the symposium on Geothermal Scaling and Corrosion at the annual conference CORROSION, which is organised by the National Association of Corrosion Engineers (NACE).

Please click here to register