Brine injection well for Gas Storage Denmark

This project was part of a feasibility study carried out by GSD to evaluate solutions for handling of brine from salt caverns potentially being converted into gas storage. It comprised of two tasks:

1) Preparation of a conceptual well design for a brine injection well with target in the Triassic Gassum Formation sandstones at a depth around 3 km. The well design was used for high level deterministic and probabilistic time and well cost estimates for drilling and completion including CAPEX and ABEX. Benchmarking performed of time vs. depth for wells onshore Denmark.

2) A subsurface review of several generations of reservoir mapping and characterization studies to identify areas where acquisition of new seismic data is recommended prior to the selection of a drilling location for a brine injection well. The review included identification of major subsurface uncertainties and risks related to tectonic setting and faults, potential paleogeographic control on reservoir sand distribution and quality, and reservoir injectivity. Based on the findings, a list of recommended studies and further work to be performed to reduce the risk and uncertainties related to reservoir presence and injectivity was presented.

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