DGMK-Project Underground Storage Technology
H2 compatibility of UT steels - phase 1
Fraunhofer Institute for Mechanics of Materials (IWM) - Dr. Frank Schweizer
Institut de la Corrosion (ICORR) - Dr. Christophe Mendibide
Astora Ltd.
Refinery Heide GmbH
RWE Gas Storage West GmbH
Storengy Germany GmbH
Solvay Chemicals GmbH
EWE Gasspeicher GmbH
MET Germany Holding GmbH
N.V. Nederlandse Gasunie
BVEG e.V.
The aim of the project is to find out whether and if so which (and if so, under which conditions) steels are suitable for deep drilling to API for hydrogen. This will be determined by suitable material tests in test laboratories, with the test boundary conditions being determined by means of operator queries. In the 1st phase of the project, the integrity assessment method will be developed.
These measures will close a gap in the existing knowledge on underground completion, in particular of UGS for hydrogen storage, and give operators certainty for a possible conversion to hydrogen.
To achieve the climate targets, there is political consensus on the central role of hydrogen use in all sectors. The storage of hydrogen is the basic prerequisite for sector coupling, because centralized energy storage in underground storage facilities (UGS) enables hydrogen to be stored in a secure and long-term manner. Due to the highly fluctuating production of hydrogen from various sources and the equally expected highly fluctuating demand, UGS will play a central role in the future energy system.
The necessary conversion measures of existing underground gas storage facilities to the medium hydrogen or also the storage of natural gas-hydrogen mixtures makes special demands on the technical equipment (well completion), which have not yet been sufficiently investigated in several aspects.
The literature research and preparation of an investigation program has been completed. The implementation of the investigation program is part of the DGMK 866 Phase 2 project.

Dr. Susanne Kuchling
Head of the Geo-Energy-Systems and Subsurface Technologies Department
Helen Werner
Research Officer of the Department of Geo-Energy Systems and Underground Technologies
Uniper Energy Storage GmbH
astora GmbH & Co. KG
RWE Gas Storage West GmbH
Storengy Germany GmbH
EWE Gasspeicher GmbH
Solvay Chemicals GmbH
MET Germany Holding GmbH
Refinery Heide GmbH
N.V. Nederlandse Gasunie
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