Material Selection for Geothermal Brine
Material Selection for Geothermal Brine
(OP)
Dear All,
What kind of material would you suggest for a geothermal brine which has TDS (57000) and Cl (44140) concentrations? Ph of the brine is 7.5. On the other hand it is also rich in Ca, K and Mg. Well temperature is 174 Cdeg. Surface temperature is around 150 Cdeg.
I have reviewed some documents of Sandvik's dublex stainless steel especially for seawater service. Exotic materials like dublex stainless steel for steamfield piping is very pricy.
At geothermal pipelines, silica depoits form in time. Isn't this silica deposition protective against corrosion? Doesn't it act like a protective layer in the pipe. (Please note that we will inhibit chemicals in the well to disable severe deposition)
Looking forward to your comments,
Best Regards,





RE: Material Selection for Geothermal Brine
FOR GEOTHERMAL POWER SYSTEM
http:
COMPANION STUDY GUIDE
TO
SHORT COURSE ON GEOTHERMAL CORROSION
AND MITIGATION IN LOW TEMPERATURE
GEOTHERMAL HEATING SYSTEMS
http://ww
CORROSION BEHAVIOR OF MATERIALS EXPOSED TO
HYPERSALINE GEOTHERMAL BRINE
http://
AN EVALUATION OF MATERIALS FOR SYSTEMS
USING COOLED, TREATED GEOTHERMAL OR
HIGH-SALINE BRINES
http:/
ADDENDUM TO MATERIAL SELECTION GUIDELINES
FOR GEOTHERMAL ENERGY UTILIZATION SYSTEMS
http
hope this help
S.
Corrosion Protection & Corrosion Control
RE: Material Selection for Geothermal Brine
One thing in your favor is that the brine has no oxygen in it.
Still, your only real options are high alloy stainless grades. You are probably looking at super-duplex alloys these days in terms of economics. They have high strength so you can use thinner walls, and the low Ni content keeps the price from being as high as the 6%Mo super-austenitics.
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Plymouth Tube
RE: Material Selection for Geothermal Brine
Gentlemen,
Thank you very much for your valuable input. This is for a new jeotermal power plant project in west coast of Turkiye. There are other JES Power plants in the country but they do not have such corrosive brine. They use carbon steel pipes with inhibitor system at the well.
Thanks again,
RE: Material Selection for Geothermal Brine