Multi-disciplinary laboratories for CO2 geological storage monitoring
Philippe Pezard – Geosciences Montpellier, CNRS, France
Michael Jordan – SINTEF, Norway
Barbara Merson, project manager, National Institute of Oceanography and Applied Geophysics – OGS, Italy
The monitoring of geological gas storage involves a multi-disciplinary approach at a variety of scales. In the near field, downhole monitoring is central to guarantee well integrity and reservoir evolution imaging during injection and long-term CO2 storage. The SHAGAL shallow experimental site was developed to test new downhole monitoring multi-physics instruments to provide continuous, real-time and cost-effective monitoring strategies needed to (1) minimize the number of monitoring holes, (2) provide a real-time and multi-physics view of reservoir changes, (3) improve storage safety from timely operational decisions during the injection phase and later, in response to unexpected behaviors.
During the webinar, it will also be presented the Svelvik CO2 Field Lab, which was designed as a quantification laboratory, where water or CO2 can be injected at 65m depth. The injection well is surrounded by four 100m-deep monitoring wells, which are instrumented behind casing (e.g., DAS, DSS, DTS cables or ERT electrodes). The inside of the wells is available for non-permanent monitoring equipment e.g., seismic sources and receivers, or for the development and testing of novel monitoring systems. We present an overview of the experience from several injections, including repeatable migration of the CO2 in the subsurface, the formation of a CO2 plume, and observed leakage along the injection well.