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To prolong the field life of The Suphanburi oil field, an additional enhanced oil recovery (EOR) process is required. Dynamic reservoir modeling will need to be performed to maximize the EOR strategy. However, achieving the right result is a challenge as the field has a complex depositional environment and high heterogeneity, resulting in a high uncertainty of the dynamic reservoir model. A new reservoir model is proposed and created. The new model has been purposely built to capture the heterogeneity of the field by incorporating the newly interpreted geological concept of the field, together with quantitative seismic interpretation results. First, the new geological concept is interpreted from well data into "depofacies". The depofacies describe both depositional environment and lithofacies. Next, quantitative seismic interpretation is performed to capture the spatial variation of the reservoir and the predefined facies. Lastly, the reservoir model is built by first generating the depofacies. The reservoir or sandstone is then modeled specifically into each pre-modeled depofacies. As a result, the new reservoir model can better capture reservoir heterogeneity, resulting in a better EOR strategy.

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