Prospects for the Evaluation and Development of Materials Under IEA Research Collaboration Program on Deep Geothermal Resources

Abstract

Deep-seated geothennal reservoirs (>3000 m) have been identified as a viable source of energy within existing and new geothennal fields. Drilling and proposals for utilization of these resources is increasing. The discharge water and steam chemistries of deep-seated geothennal production wells are expected to contain significant concentrations of aggressive species CO2, H2S and HCI for example and may be of high salinity (high CI) and low pH (high S04). The corrosion properties of these fluids have not been fully defined and there is a need to collect and evaluate materials results and experience relevant to the selection of materials for deep-seated geothennal developments. The IEA research program was proposed to encourage infonnation exchange and collaborative research activities including materials research. A four year program of activities is outlined to progress this area of research.