Abstract
This paper shows the results of the Lower U Sandstone prediction of Limoncocha Oilfield using the pre-stack elastic seismic inversion method, based on available well and seismic data. This study was focused to reduce the uncertainty in the location of new wells. The Poisson's Ratio (PR) is the most sensitive elastic parameter for discriminating lithology. Data of 49 wells were used in this study and the cross-plots analysis between mean PR obtained of seismic inversion and sand net thickness gotten of the wells show the best correlation (90%). Based on the results of this study 21 new wells were located and drilled, including horizontal and sidetrack wells. Currently, the cross-plots between these parameters in the Lower U Sandstone, including the new wells, keep a high correlation (83%). These results show the validity of this method for predicting the net sand thickness of the Lower U reservoir in the Limoncocha Oilfield. Production data were also correlated with the mean PR, and the best production matches with thickest sand development. Maybe this method could be applied in other Oilfields with similar results.
