Synthetic UHS–MRV Dataset for OFP–OSDU Integration in Hydrogen Storage Reporting

This dataset represents, to the best of our knowledge, the first publicly available synthetic Underground Hydrogen Storage (UHS) dataset explicitly mapped to both the Open Footprint (OFP) model and the Open Subsurface Data Universe (OSDU) schemas (Facility, Well, Pipeline, Storage). It was developed to fill a critical gap by enabling MRV (Measurement, Reporting, and Verification) testing, standards-based reporting validation, and interoperability between sustainability and subsurface operations data in the energy sector. The dataset contains 10 facilities with annual, monthly, and daily injection/withdrawal records across more than 20 parameters, including reservoir type, hydrogen injected and withdrawn, cushion gas, transport mode and losses, compression energy, pressure/temperature conditions, leak events, methane co-production (for depleted gas fields), and net H₂ stored. All values are synthetically generated but follow realistic industry ranges and mass balance rules, with logic applied per reservoir type (e.g., salt caverns = high cycling with low losses; depleted gas = possible methane co-production; aquifers = higher uncertainty and losses). This enables reproducible research and system prototyping without exposing confidential or proprietary project data. This dataset is FAIR-compliant (Findable, Accessible, Interoperable, Reusable) and intended for use in: UHS MRV reporting system prototyping Data model integration testing between OFP and OSDU Benchmarking analytics pipelines for hydrogen storage monitoring Academic research, teaching, and demonstration purposes Schema Alignment for UHS (SUHS-OFPOSDU) This dataset has been explicitly mapped to the Open Footprint (OFP) emissions model and to publicly available Open Subsurface Data Universe (OSDU) Well-Known Schemas (WKS) and Well-Known Entities (WKE), including: WKS:master-data–Facility → facility_id, country_code, lat, lon, reservoir_type WKS:master-data–Asset → pipeline_length_km, transport_mode WKE:Wellbore / Well → well_id, injection_start_date, injection_end_date, avg_reservoir_pressure_MPa, avg_reservoir_temp_C WKE:ProductionData → h2_injected_tonnes, h2_withdrawn_tonnes, methane_co_produced_tonnes WKE:Measurement → h2_cushion_gas_tonnes, compression_energy_MWh, h2_losses_tonnes WKE:Event / Method → leak_events_count, leak_mass_tonnes, mmv_methods, ogmp_source_category (Proposed) EnvironmentalData extension → h2_net_stored_tonnes (net balance after MRV adjustments) Disclaimer: This dataset is entirely synthetic and does not represent actual company or facility data. It is provided for educational, research, and development purposes only. Salt cavern examples reflect commercial practice, while depleted gas and aquifer examples are based on pilot / feasibility scenarios.