Permanent Passive Seismic Monitoring at the Céré-la-Ronde Underground Gas Storage During Reservoir Fill-Up

P662 PERMANENT PASSIVE SEISMIC MONITORING AT THE CÉRÉ-LA-RONDE UNDERGROUND GAS STORAGE DURING RESERVOIR FILL-UP 1 J.-P. DEFLANDRE 1 and F.HUGUET 2 1 Institut Français du Pétrole 1-4 avenue de Bois-Préau 92852 Rueil-Malmaison France 2 Gaz de France Abstract This paper briefly reports the 3 first years of the permanent passive seismic experiment Gaz de France and Institut Français du Pétrole are currently performing on the Céré-la-Ronde underground gas storage facility. The measurements confirm the interest of using on-tubing Permanent Downhole Geophones to monitor the micro-seismic activity associated to gas storage and more generally for reservoir production. Low magnitude events (from