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Safety Monitoring of CO2 Storages Using Microseismicity and 4D Seismic Modelling

  • Budsjett
    10,8 millioner
  • Climit-finansiering
    8.4 MNOK from the Research Council of Norway in addition to funding from industrial partners
  • Prosjektnummer
    189994
  • Partnere
    Project responsible: NORSAR Research partners: UNIS, University of Hamburg (now cooperating group relocated to GFZ, Potsdam) Financial partners: Statoil, Read, Octio, Lundin
  •  
  • Prosjektperiode
    2009 – 2013

The objective is to develop a new method for monitoring CO2 storage sites based on microseismic measurements and 4D seismic modelling.

Microseismic data have been collected during injection tests at the UNIS CO2LAB at Svalbard (Longyearbyen). In addition, a structural model has been constructed and integrated into NORSAR’s software with the goal to simulate the seismic response of CO2 injection. To enhance event locations, the velocity model will have to be improved by incorporating new information hopefully available in the near future.

In addition, downhole microseismic data has been provided to NORSAR by the In Salah (Algeria) CO2 injection project. The microseismic event rate seems to be directly related to the CO2 injection parameters (injection rate and pressure). However, due to the network configuration of a single vertical well and insufficient functional components, it is not possible to locate the microseismic events. A cluster analysis shows three main clusters of events.