Hydrothermal fluid flow permeability model simulation to identify potential zones for way Ratai geothermal reservoir.
Autor: | Karyanto, Prihantoro, Ryas Hary, Darmawan, I. Gede Boy |
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Zdroj: | AIP Conference Proceedings; 2024, Vol. 2891 Issue 1, p1-9, 9p |
Abstrakt: | A preliminary study using numerical simulations in the Gunung Ratai geothermal field has been carried out to model the permeability of the hydrothermal fluid flow pattern. The steady-states model approach utilizes surface manifestation data because there is no well data in the study area. Numerical simulations were carried out using Hydrotherm Interactive software on a cross-sectional path from the summit of Mount Ratai to the manifestation. Rock parameters and surface data used in the simulation were obtained from field measurements and literature studies. The simulation results show that the steady-state model begins to be achieved in the 25,000th-year iteration. The movement of the mass flow of water fluid shows the dominant direction of movement from the peaks and slopes of Mount Ratai towards the manifestation with a temperature of ± 100 °C, while the dominant mass of fluid vapour is trapped under the peak of Mount Ratai with the highest flux of 5 × 10−7g/(s. cm2). The permeability model shows the presence of a relatively thick impermeable area under Mount Ratai. This result is interpreted as a very thick cap rock, thus causing the fumaroles and solfatara manifestations to be found on Mount Ratai. This condition is in line with the resistivity model in the results of previous studies using the Audio Magnetotelluric (AMT) method. Based on these results, a numerical model approach to the hydrothermal fluid flow pattern can be carried out to interpret the permeability model in the geothermal field, especially at Mount Ratai. [ABSTRACT FROM AUTHOR] |
Databáze: | Complementary Index |
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