Natural state model of the Kotamobagu geothermal system, North Sulawesi, Indonesia

Hendra Riogilang, Ryuichi Itoi, Toshiaki Tanaka, Saeid Jalilinasrabady

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A three-dimensional numerical reservoir modeling of the Kotamobagu hydrothermal system was carried out. A natural state model of Kotamobagu was obtained by conducting simulations by changing parameter values of permeability, heat and mass recharges. The results of simulation were calibrated to temperature data from hot spring of Liberia and Bongkudai villages. The developed model confirmed that mass flows upward from the bottom layer to the surface, then travels laterally. The dominant mass flows through faults running northeast and to southwest. The mass from the bottom of Mt. Muayat flows to the southwest through the andesitic lava and the pumice tuff layers. Further, at the surface of Liberia and Bongkudai area, 3kg/s of mass is being discharged to the hot spring, the portion of mass flows through the fault to the southwest and continues further to the west. In the southwest area, mainly in Bakan, there is no mass discharge corresponding to related modeling blocks. Simulation results implies that the source of heat and mass discharge at the Bakan hot spring is not derived from Mt. Muayat, but from some source below sedimentary formation.

Original languageEnglish
Title of host publicationGeothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal
Subtitle of host publicationReliable, Renewable, Global
Pages1299-1304
Number of pages6
Publication statusPublished - 2012
EventGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012 - Reno, NV, United States
Duration: Sep 30 2012Oct 3 2012

Publication series

NameTransactions - Geothermal Resources Council
Volume36 2
ISSN (Print)0193-5933

Other

OtherGeothermal Resources Council Annual Meeting 2012 - Geothermal: Reliable, Renewable, Global, GRC 2012
CountryUnited States
CityReno, NV
Period9/30/1210/3/12

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Geophysics

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    Riogilang, H., Itoi, R., Tanaka, T., & Jalilinasrabady, S. (2012). Natural state model of the Kotamobagu geothermal system, North Sulawesi, Indonesia. In Geothermal Resources Council Annual Meeting 2012, GRC 2012 - Geothermal: Reliable, Renewable, Global (pp. 1299-1304). (Transactions - Geothermal Resources Council; Vol. 36 2).