Abstract
The Nagaoka pilot site is located in the onshore area of Nagaoka oil field in the Niigata plane of central Honshu on the Japan sea side of central Japan. The selected formation was the early Pleistocene Haizume Formation. This paper presents the realistic modeling strategy that was applied to Nagaoka site. The CO2 reservoir zone in this site was described in terms of three depositional elements and eleven lithofacies. These descriptions were incorporated into the model at a resolution, with a cell size of 10cm high, which ensured capture of the most significant heterogeneities. The detailed reservoir model matched well log and core performance in this site.
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