3D Modelling using 2D data of Sokoria Geothermal Field, Ende, Flores, Indonesia

Abstract

The Sokoria geothermal system is volcano-hosted and its reservoir is liquid-dominated. The thermal manifestations are distributed on the flank of the Kelimutu volcano characterized by acidic lakes, fumaroles, and hot springs. Several 3G studies and surveys have been conducted in this geothermal area, including five deep wells drilling.
Geoscientific data (geology, geochemistry, geophysics) in the geothermal resource development needs an integrated interpretation of the geoscience data sets that may not be sufficiently understood using only two-dimensional (2D) models, thus three-dimensional (3D) models have been increasingly used to solve this issue. One of the tools used to generate a 3D model is the Leapfrog Geothermal software. Leapfrog Geothermal is specifically designed for the geothermal industry and also provides for the integration of geothermal datasets.
This study aims to create a 3D conceptual model to visualize the geological and geothermal systems of the field and to better understand the nature of the geothermal framework in Sokoria. In this study, secondary data such as geological, geophysical, geochemistry, well data, and raster data from open-sourced platforms were utilized, with additional analysis applied to better characterize the outcome of the model. Despite the lack of subsurface data available to be freely accessed, application of the modelling method is fruitful and hopefully could be utilized for any future consideration in developing the field.