【企画講演／募集型企画】 資源探査の動向と大規模データプロセッシング

[1K0301-05-03] （学生発表：博士課程）　貯留層数値モデリングを用いた種々の変換技術による地熱発電の持続性評価

○プラタマ ヘル ベリアン¹、アシャット アリ²、ウイディアトゥモ ジョナサン シャロン²、ストポ ストポ²、小池 克明¹ (1. 京都大学、2. バンドン工科大学)

司会：木崎彰久（秋田大学）

キーワード：パトゥハ、貯留層モデル、発電所、熱力学モデル、TOUGH2

Integrating a numerical reservoir and power plant thermodynamic model is a fundamental instrument for a synthetic and operative for the Patuha geothermal field, West Java, Indonesia. This study defines which power plant cycle or combination of power plant cycles gives the best production sustainability for a specific generating capacity. Numerical reservoir modelling was used to simulate the effect of Dry-Steam Cycle Unit (DSCU), and Integrated Geothermal Combined-Cycle Unit (IGCCU) was selected for field development strategy options. TOUGH2 was used to simulate the effects of these technologies on reservoir production sustainability. The selection of power plant technology and field production strategy clearly affects the performance of the reservoir. The simulation results clarify that the IGCCU is less sustainable if hot fluid is produced only from the steam zone. However, the energy extraction from the brine zone is proven advantageous to maintain the steam zone pressure. In addition, higher injection rates into the brine zone from the IGCCU power plant can yield higher electrical power.