3D Natural State Modeling of Mount Iyang-Argopuro Geothermal Area, East Java, Indonesia

Authors

  • Dewi Asmorowati Department of Petroleum Engineering, Faculty of Mineral Technology, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Sleman, Special Region of Yogyakarta, Indonesia.
  • Allen Haryanto Lukmana Department of Petroleum Engineering, Faculty of Mineral Technology, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Sleman, Special Region of Yogyakarta, Indonesia.
  • Rizqi Mahfudz Prasetyo Department of Petroleum Engineering, Faculty of Mineral Technology, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Sleman, Special Region of Yogyakarta, Indonesia.

DOI:

https://doi.org/10.25299/jgeet.2021.6.2.4127

Keywords:

Mount Iyang-Argopuro, Natural State, Reservoir Simulation, TOUGH2

Abstract

Mount Iyang-Argopuro is one of the geothermal working areas in the East Java. Mount Iyang-Argopuro has the potential of 185 MWe of reserves and 110 MWe of resources.  It is estimated to have a liquid dominated reservoir with temperature up to 250-275 oC. An early 3D natural state numerical model of Mount Iyang-Argopuro Field is created using TOUGH2 simulator in order to identify the undisturbed condition of reservoir and resource assessment. Since Mount Iyang-Argopuro geothermal area is still in the exploration stage, the model created based on based on geological, geophysical, and geochemical data. The model has an area 14 km x 8.2 km and 9180 m in thickness. The model consists of 7410 of rectangular cell blocks with the roughest cell size is 1000 m x 1000 m and the finest is 200 m x 500 m. The model is verified by matching the model temperature and pressure profiles to the calculated geothermometer temperature and pressure, which shows good match enough.

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Published

2021-06-15