Hontomin, Spain & In Salah, Algeria

2.1 Hontomín Pilot Plant is the only current onshore injection site in Europe for CO2 geological storage, operated by Fundación Ciudad de la Energía (CIUDEN), and recognized by the European Parliament as key test facility for CCS technology development. The pilot is located close to Burgos in the northern Spain, and its reservoir is comprised of fractured carbonates with poor matrix porosity. The site represents a structural dome where the pair seal-reservoir is located within Jurassic Formations (Marly Lias and Sopeña respectively). Overburden is formed of Dogger, Purbeck and Weald and the underlying seal is located at Triassic Keuper.

SENSE plans to acquire InSAR data from Hontomin site while an injection operation takes place and thus link possible surface deformation to reservoir hydrodynamic through inversion, history matching and geomechanical modeling.

2.2 In Salah, Algeria: The In Salah CO2 storage project is a pioneering international Carbon Capture and Storage (CCS) project at Krechba, In Salah, central Algeria. Carbon dioxide is separated from the natural gas and is injected into a deep saline Carboniferous sandstone formation down-dip of the gas producing horizon. About 4 millions tonnes of CO2 was injected from 2004-2011. Ground motion during injection period is very well known.

The objective of this study is to find out response of the ground to injection shut-in few years after the operation.