Exploration and comparison of geothermal areas in Indonesia by fluid-rock geochemistry
F. Deon (TU Delft - Reservoir Engineering)
A. Barnhoorn (TU Delft - Applied Geophysics and Petrophysics)
C. Lievens (University of Twente)
N. Saptadij (Bandung Institute of Technology ITB)
S. Sutopo (Bandung Institute of Technology ITB)
F van der Meer (University of Twente)
T. den Hartog (University of Twente)
M Brehmer (GFZ Helmholtz-Zentrum für Geoforschung)
D.F. Bruhn (TU Delft - Reservoir Engineering)
M de Jong (Bandung Institute of Technology ITB)
R. Ryannugroho (Bandung Institute of Technology ITB)
R. Hutami (Bandung Institute of Technology ITB)
R. Sule (Bandung Institute of Technology ITB)
C. Hecker (University of Twente)
D Bonté (Universiteit Utrecht)
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Abstract
Indonesia with its large, but partially unexplored geothermal potential is one of the most interesting and suitable places in the world to conduct geothermal exploration research.
This study focuses on geothermal exploration based on fluid-rock geochemistry/geomechanics and aims to compile an overview on geochemical data-rock properties from important geothermal fields in Indonesia. The work will be conducted over the next two years and this paper intends to present the methods and approaches we would like to use. The research carried out in the field and in the laboratory is performed in the framework of the GEOCAP cooperation (Geothermal Capacity Building program Indonesia- the Netherlands). Research along with capacity building will be combined in this Indonesian-Dutch project. The application of petrology and geochemistry accounts to a better understanding of areas where operating power plants exist but also helps in the initial exploration stage of green areas. Because of their relevance and geological setting geothermal fields in Java, Sulawesi and the sedimentary basin of central Sumatra have been chosen as focus areas of this study. Operators, universities and governmental agencies will benefit from this approach as it will be applied also to new green-field regions and areas to be tendered.