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Flow testing of IDDP-1, the first Icelandic Deep Drilling Project (IDDP) well drilled in the Krafla geothermal field in Iceland, demonstrated promising results by producing superheated steam. During an unavoidable quenching of the well the innermost casing failed presumably due to tensile stresses caused by thermal contraction. Since the structural integrity of casings is essential for utilization...
High temperature geothermal wells are constructed of several concentric steel casings that are fully cemented up to the surface. The structural integrity of such casings is essential for the utilization of wells. The casing is subjected to multiple thermo-mechanical loads that can cause casing failures. Thermal expansion generates thermal stresses in the casings and causes the wellhead to rise slightly...
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