Speaker
Description
The relative permeabilities of multiphase fluid systems depend on saturation history as has been shown by experimental, numerical, and field studies. Such hysteresis is especially relevant in underground hydrogen storage (UHS). UHS projects involve temporary storage of hydrogen in the porous subsurface on a seasonal timescale. The injection and production of hydrogen over the span of several seasons necessitates accurate description of saturation history in the reservoir to estimate the overall efficiency of the storage operations and losses due to trapping.
Here, we concentrate on hydrogen injection and production into a heterogeneous semi-synthetic benchmark model of a saline aquifer [1] using TOUGH 3 [2]. We conduct reservoir simulations of UHS accounting for experimental hydrogen-water relative permeabilities from literature [3] which show obvious hysteretic behaviour. The goal is to elucidate the effect of inclusion of hysteretic vs non-hysteretic relative permeability-saturation constitutive relations for multiple storage cycles of UHS. Key markers such as quantity of hydrogen extracted in each cycle and evolution of gas-saturation distribution in the reservoir illustrate the importance of accurately accounting for hysteresis in the simulation of UHS.
References
[1] Hogeweg, S., Strobel, G. & Hagemann, B. Benchmark study for the simulation of Underground Hydrogen Storage operations. Comput Geosci 26, 1367–1378 (2022). https://doi.org/10.1007/s10596-022-10163-5
[2] Jung, Y., G. Pau, S. Finsterle, C. Doughty, TOUGH3 User’s Guide, Version 1.0, Report LBNL-2001093, Lawrence Berkeley National Laboratory, Berkeley, Calif., January 2018.
[3] Lysyy, M., Føyen, T., Johannesen, E. B., Fernø, M., & Ersland, G. (2022). Hydrogen relative permeability hysteresis in underground storage. Geophysical Research Letters, 49, e2022GL100364. https://doi.org/10.1029/2022GL100364
| Participation | In-Person |
|---|---|
| Country | Germany |
| Energy Transition Focused Abstracts | This abstract is related to Energy Transition |
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