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Wednesday, March 25, 2009: 2:50 PM
C206 (Georgia World Congress Center)
Evaluation of Corrosion Resistance for Materials in Geothermal Applications
Geothermics gains influence for energy source not only in highly active zones of our planet but also in normal environment available in Germany.
In order to provide sustainable corrosion resistance of casing in areas of geothermal deep wells materials designed for such applications have been evaluated regarding their suitability in a first combined project of corrosion, geology and materials scientists.
8 different materials were evaluated by exposure and electrochemical tests. 2 of those materials were carbon steels, 2 highly alloyed stainless steels, 2 Ni-based alloys and 2 based on titanium. Tests were performed in an artificial geothermal fluid, which composition based on a reference analysis of a real well.
Tests showed different corrosion behavior of the materials selected. The limitations of suitability were determined. Based on the test results recommendations for materials selection were given for applying parts made of these materials for geothermal sites.
The test results, presented in this paper, will be used for designing new geothermal sites. They are functioning as a base for a future extended test program.
Geothermics gains influence for energy source not only in highly active zones of our planet but also in normal environment available in Germany.
In order to provide sustainable corrosion resistance of casing in areas of geothermal deep wells materials designed for such applications have been evaluated regarding their suitability in a first combined project of corrosion, geology and materials scientists.
8 different materials were evaluated by exposure and electrochemical tests. 2 of those materials were carbon steels, 2 highly alloyed stainless steels, 2 Ni-based alloys and 2 based on titanium. Tests were performed in an artificial geothermal fluid, which composition based on a reference analysis of a real well.
Tests showed different corrosion behavior of the materials selected. The limitations of suitability were determined. Based on the test results recommendations for materials selection were given for applying parts made of these materials for geothermal sites.
The test results, presented in this paper, will be used for designing new geothermal sites. They are functioning as a base for a future extended test program.
See more of: Recent Experiences with Corrosion Resistant Materials - STG 39
See more of: Technical Symposium
See more of: Technical Symposium