Monitoring of a reverse cement job in a high-temperature geothermal environment

Abstract Cementing operations in wellbores, especially for long casings, are often challenging and prone to deficiencies when not properly planned executed. While exploring exploiting of geothermal resources at temperatures above the critical point water was attempted different drilling projects recent years, well design, procedure run cement production casings became a key challenge engineers. For first time, reverse cementing job 2.97 km casing high-temperature could be monitored analyzed using combination permanently installed distributed fiber optic electronic sensors as conventional logging equipment. Data from were used monitor evaluate cementation process onset hydration. Based on data, understanding downhole fluid dynamics during improved. Our analysis suggests that diluted placement partly lost into formation. These findings can help better prepare future ventures under similar conditions.