History-matching of CO2 Flow at Sleipner – New Insight based on Analyses of Temperature and Seismic Data

History matching of layer 9 of the Utsira Formation in the Sleipner area has so far been problematic, but could be achieved it higher CO2 temperature than has previously been estimated are invoked. Such high temperatures can to some extent be justified from hithero unknown DST measurements. Furhtermore, heat exchange between warm injected CO2 and the colder reservoir can be significant. Such heat exchange may possibly explain the discrepancy between modelled and observed CO2 fow in the Utsira Formation.