As society moves toward a more sustainable future, geothermal energy emerges as a viable long-term solution with its strong potential to reduce the carbon footprint. Numerous studies focus on locating geothermal reservoirs and utilizing this energy as an alternative to fossil fuels. Simultaneously, the industry works toward standardizing high-temperature technologies crucial for downhole geothermal completions. The design of downhole completions for geothermal wells faces many challenges, especially regarding well integrity under high-pressure high-temperature (HPHT) conditions. These factors necessitate careful well planning and tubular design. A lack of tubular integrity can lead to serious personnel injuries, well integrity issues, high re-completion and workover costs, and environmental risks. Achieving a balance between well integrity throughout the life of the well and minimizing completion costs is essential. Proper selection of tubular strings, verification of connection integrity, and optimization of downhole completions are key components of completion design to avoid costly workovers. Completing geothermal wells requires critical design considerations to optimize thermal energy extraction and maintain reservoir integrity. This study evaluates geothermal well completions in three different configurations using casing and tubing design software, i.e., tubing with packer, tubing with packer and expansion joint, and tubingless. The results of these sensitivity studies allow conclusions to be drawn about which completion configuration performs best for supercritical geothermal wells.

Press the Back button in your browser, or search again.

Copyright 2025, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.