Next-Generation Geothermal Technology Reaches Higher Temperatures
Presented: World Geothermal Congress 2026 John Clegg*, Matthew White, Peter Harvey and Steve Krase Read Published Paper. ABSTRACT Enhanced Geothermal Systems (EGS) and Advanced Geothermal Systems (AGS) represent the next frontier in geothermal energy, leveraging proven directional drilling technologies from the oil and gas sector to access heat in regions previously unreachable through conventional […]
Thermal Management Analysis of Conventional Multi-PCB-Stack for Geothermal Drilling Tools
Presented: Stanford University Workshop, California – Gorka Plata, Shraddha Singh & John Clegg, Hephae Energy Technology. Read Published Paper. ABSTRACT Efficient thermal management of downhole electronics remains a critical challenge for the deployment of Measurement-While-Drilling (MWD) systems in high temperature geothermal environments. This study evaluates the thermal performance of conventional multilayer polyimide-based printed circuit boards (PCBs) […]
Effect of Modularity on the Thermal Management of Optimized Printed Circuit Boards for Geothermal Drilling Tools
Presented: SPE/IADC International Drilling Conference – Gorka Plata, Shraddha Singh & John Clegg, Hephae Energy Technology. Read Published Paper. ABSTRACT This paper investigates a novel approach to thermal management in high-temperature Measurement While Drilling (MWD) tools, addressing critical challenges in geothermal drilling where conventional systems fail to operate efficiently above 175 -185°C. The proposed design […]
Breaking the 200°C Barrier: Testing to Prove Functionality of a Measurement While Drilling System Above 210°C
Presented: Geothermal Rising Conference 2025 – Matthew White, John Clegg, Steve Krase and Rochelle Longval, Hephae Energy Technology. Read Published Paper. ABSTRACT A paper presented by the authors at GRC in 2024 (GRC Transactions, Vol. 48) described the need for high-temperature drilling equipment to enable the accurate drilling of deep, hot EGS (Enhanced Geothermal System) […]
Evaluation of Thermal Performance of Polyimidebased PCB IN Geothermal Drilling Tools
Presented: GeoTherm Offenburg, 2025 – Shraddha Singh, Hephae Energy Technology. Open Poster. One of the biggest challenges of Deep geothermal drilling is the high temperature that exceeds the tolerance of the electronic devices in the Measurement While Drilling (MWD) tools. To be able to drill deeper and hotter, an efficient removal of heat from the […]
A New Approach to High Temperature Sensors and Electronics for Geothermal Drilling
Presentation: SPE Aberdeen 2024 – John Clegg, President and CTO, Hephae Energy Technology. Open Presentation. ABSTRACT Higher bottom hole temperatures can significantly impact the economics of conventional (hydrothermal) and Enhanced and Advanced Geothermal Systems (EGS and AGS or “unconventional”) projects, but these wells will require precise placement to achieve their maximum potential – requiring the […]
Breaking the 200C Barrier: Development of an Integrated High Temperature Directional Drilling System
Presented: Geothermal Rising Conference 2024 – John Clegg, President and CTO, Hephae Energy Technology. Read Published Paper. ABSTRACT Breaking the 200C Barrier: Development of an Integrated High Temperature Directional Drilling System. So-called “unconventional” geothermal wells, also known as “EGS” (Enhanced Geothermal System) and “AGS” (Advanced Geothermal System) wells, are increasingly being funded and are starting […]
Advances in High Temperature Directional Drilling
Presented: Indonesia International Geothermal Convention 2024 – John Clegg, Peter Harvey, Steve Krase, Gorka Plata, Shraddha Singh and Matthew White, Hephae Energy Technology. Read Published Paper. ABSTRACT Enhanced and advanced geothermal systems (EGS and AGS) are new methods of creating geothermal installations that will potentially increase electric power production by a factor of greater than […]
New Advances in High Temperature Electronics and Sensors for Geothermal Drilling
Presented: GeoTherm Offenburg 2024 – John Clegg, President and CTO, Hephae Energy Technology. Read Published Paper. ABSTRACT Enhanced and Advanced Geothermal Systems (EGS and AGS) are new methods of creating geothermal installations that have already been demonstrated to potentially increase electric power production by a factor of greater than 10 when compared with more conventional […]
High Temperature Well Placement
Presented: IADC Geothermal Vienna 2024 – John Clegg, President and CTO, Hephae Energy Technology. Read Published Paper. Next-generation geothermal systems will allow geothermal energy to be exploited in hot, dry rocks by creating artificial reservoirs – in the same way as unconventional oil and gas wells created artificial reservoirs earlier this century. Next-generation geothermal systems […]