According to Judy Feder Technology Editor at Society of Petroleum Engineers International, fluid analysis is a critical topic.
You can read the follow in the Journal of Petroleum Technology;
"Drilling optimization in geothermal applications requires integrating the drilling system, drilling fluids, and drill bits that incorporate advanced materials science. Cost-effective directional drilling systems, rotary steerable services, electromagnetic telemetry, and measurement-while-drilling services that perform reliably at elevated temperatures are critical".
“Extending and transferring the high-temperature capabilities of existing E&P technologies could make geothermal energy development possible—and scalable—anywhere in the world.”
One more reason why #RheoSense should be part of your fluid set up. Also, having real time quality control from an independent fluid analysis supplier, like Intelligent Mud Solutions AS, will be a critical factor for your success.
https://jpt.spe.org/geothermal-digging-beneath-surface