Use of Alternative Methods for Estimating Water Content in the Kizildere Geothermal Field

Abstract

The reserve determination methodology, generally utilized for oil reservoirs, was carried out to estimate water in-place in the Kizildere geothermal reservoir in Turkey. In the past, the water inplace had been estimated volumetrically on the basis of geological and geophysical data. This study involves in the volumetric estimation of water in-place through the stochastic approach. For comparison, decline curve analysis methods, based on production history data, were used to estimate water in-place. A material balance technique was utilized for the same purpose. A long-term production test analysis was also employed as reservoir limit test for the estimation. All of these studies have revealed consistent values of water in-place. In conclusion, this study has shown that the reservoir estimation methods developed for oil reservoirs can also be used for geothermal reservoirs.