Thermal property measurement of Mexican geothermal cementing systems using an experimental technique based on the Jaeger method

摘要

Thermal conductivity and diffusivity and specific heat capacity of six Mexican cementing systems used in geothermal well completion were determined in the temperature range from 28 to 200℃. Thermal measurements were performed using an experimental technique based on the Jaeger method. The experimental system was calibrated by measuring the thermal properties of standard fused quartz samples. Results show that thermal conductivity and specific heat capacity depend on the particular composition of the cementing system and tend to increase with an increase in temperature, while thermal diffusivity decreases with temperature in all samples. Measurement errors were estimated less than 9.8%, 11.8% and 8.5% for the thermal conductivity, the thermal diffusivity and the specific heat capacity, respectively. Numerical correlations derived from this experimental work enable the variation of these thermal properties with temperature to be analysed.