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Understanding Geofluid Chemistry

Wed, 17 June, 2020

Launched in November 2019, project GEOPRO funded under the EU’s H2020 programme, is aimed at generating targeted advances in the understanding and modelling of geofluid properties. The project is designed to provide an increased understanding of the physio-chemical properties of fluids via generation of thermodynamic and kinetic data, improved Equation of State (EoS) for fluid compositions, and flow assurance simulations. The data generated will help to fill gaps of missing data on solute thermodynamics in complex and supercritical fluids, thereby affecting the exploitation of geothermal systems.

Verification of models on user’s sites

GEOPRO’s ambitious practical approach allows field validation at user sites — case studies at different geographical locations, representative of fluid specific challenges including scaling, degassing and corrosion problems. “Our main concept is to work towards replacing costly, site specific, trial and error approaches in geothermal engineering by providing a set of tools to address current challenges in geothermal, like scale formation, degassing, bubble formation, two-phase flow and superhot and Exploratory Knowledge”, says the GEOPRO consortium. The tools introduced are aimed to be empirical, opening the arena to a truly representative understanding of the complex geochemistry of the fluids.

Understanding the fluid problems at Kizildere (Turkey)

The geothermal operation at Kizildere in Turkey provides a classical mid to high-enthalpy geothermal system uses case with operational limitations due to high gas contents and scaling. “We are utilising our high capacity production power, qualified human resources, well balanced portfolio, diversity of sources and capability of creating innovative solutions to be perpetual and leading part of the global energy transformation”, says Zorlu Enerji. The Turkish group are part of GEOPRO, demonstrating the complimentary strength of its consortium.

Demonstration in Insheim, Germany

The medium-enthalapy geothermal operation in Germany experiences classical limitations due to scaling and corrosion issues stemming from complex fluid chemistry. Insheim geothermal operation is operated by Pfalzerke Geofuture GmbH (PWG) and is promoting geothermal energy in the Upper Rhine Graben.

Demonstration in Hengill, Iceland

Reykjavik Energy (OR) and its subsidiary ON Power operate two high-enthalpy geothermal power plants, Hellisheidi and Nesjavellir. "At OR we believe the next breakthrough in geothermal heat utilisation lies in targeting deeper and hotter fluid within currently operated geothermal fields. This can provide a sustainable source of high density energy, improving the efficiency and increasing the lifetime of existing geothermal operations, while minimising the environmental footprint. Utilising superhot fluids will play a crucial role for a carbon-zero energy future in Iceland and other regions of the world" – explains OR as it participates as the third demonstration site for GEOPRO

Creating a positive impact!

The models and technologies developed as part of the project will contribute in making geothermal energy generation more accessible and affordable. The improved understanding of the physio-chemical properties of geofluids will help predict scaling, degassing and bubble formation, allowing increased efficiency of plant operations, reduced CAPEX, including reduction in Levelised Cost of Energy (LCOE).

To find out more about the project, check out the 1st issue of GEOPRO Newsletter here!


The projects leading to this application have received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 851816.


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