A key process of natural state modeling: 3D Geological model of Jaboi Geothermal field, Nangro Aceh Darussalam, Indonesia

Abstract

This project aims to develop a new natural state model of Jaboi geothermal area to obtain an improved understanding of the subsurface conditions and behavior of the reservoir. This paper describes the progress that has been made in the project so far which includes a new geological model developed in LEAPFROG Geothermal and the reservoir model setup and definition. The new geological model provides a very useful 3D visualization tool and compiles all of the exploration data. Jaboi geothermal field has been explored since the 1970's until today. However, no research has gone as far as creating a 3D model of the area. The construction process of the new 3D geological model of Weh Island was carried out using a compilation of geoscientific data derived from the Ministry of Energy and Mineral Resources exploration activities within 2005-2006. The 3D geological model assigns the related features such as the geological structures, water level, rock types, and surface manifestations and the model will be used as the basis for developing the new reservoir model. A description of the new reservoir model's setup and definition is given, and details of the proposed mode calibration are outlined. The simulations will be run using AUTOUGH2.