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Principal Points in Cementing Geothermal Wells

DOI: 10.3968/j.aped.1925543820130501.1145

Keywords: Geothermal energy , HPHT , Geothermal well

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Geothermal energy is becoming an important source of energy and its importance will be increasing in the future. When we drill geothermal wells, we encounter high temperature zones and may also encounter high pressure areas. Cementing in high temperature environments such as geothermal wells is very challenging. The survey that was sent to High-Pressure-High-Temperature (HPHT) professionals at the HPHT Summit meeting in 2012, showed Cement Design is one of the biggest concerns for HPHT operations and it is one of their technology gaps. Temperatures as high as 200 °C-400 °C could destabilize the setting of the cement. If the well has both high temperature and high pressure, the cementing process becomes much more complex. This article discusses various aspects of cementing procedures and considerations for geothermal wells including cements design considerations, crucial problems, and some technology solutions. Key words: Geothermal energy; HPHT; Geothermal well


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