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Unlocking Low Temperature Geothermal: Key Insights for Exploitation of Geothermal Energy from Medium Depths (500–1500 m)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Sixth EAGE Global Energy Transition Conference & Exhibition (GET 2025), Oct 2025, Volume 2025, p.1 - 5
Abstract
Summary
Low Temperature Geothermal (LTG) energy in the depth range of 500 to 1500 m is potentially a valuable source to support the heat transition in The Netherlands. However, due to a lack of operational knowledge and experience and subsurface uncertainty, developing such projects currently carries considerable risk. In this work, information related to drilling, completions and operations has been brought together from current developments in this depth domain. These are mainly oil and gas fields and one geothermal doublet. The results show that with respect to drilling considerable knowledge and experience is available, which show how to drill the required well designs with sufficient step-out at shallow depth. For completions and in particular operations, much less experience is available. Different completions have been used in the poorly or unconsolidated formations in this depth domain, but these need to be tested for the rates, fluids and subsurface characteristics that can be expected for LTG. On the production side, increasing flow rates from conservative oil & gas baselines, will improve the business case of LTG, but problems due to fines migration or sand production need to be understood and included in the planning to prepare for long-term economic operation.
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