PROSPECTING OF GEOTHERMAL POTENTIAL ZONE BY UTILIZATION OF SOILGAS MEASUREMENT RESULTS IN THE PATUHA GEOTHERMAL FIELD, KABUPATEN BANDUNG

• Main Author: Eka Satya Yaroseray, Kaleb
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/47251
• Institution: Institut Teknologi Bandung

New Renewable Energi (NRE) is very important to be developed in meeting Energi needs in the future. Geothermal Energi is a potential type of NRE. The development of accurate geothermal exploration methods at low cost will greatly assist the process of developing and utilizing geothermal Energi. Soil-gas survei is one of the preliminary exploration methods that can support geothermal exploration activities. The research was conducted at the Gunung Patuha Geothermal Field, in the vicinity of PT Geo Dipa Energi's operational area, gas samples were taken from 16 sampling points in well construction. Data was collected in the August to October 2019. The values of the ????????2 ???????????? ????2S gas concentrations obtained were analyzed with lithology, structure, and manifestation conditions with 222-Rn and mercury gas values. From the test results obtained by the composition contained in the soil gas sample as follows; ????????4, ????????2, ????2S, and Ar,. The ????????2 gas concentration values measured in the range 217.80 - 361.48 ppm. Meanwhile, the value of ????2S gas concentration measured in the range 0.19 - 5.53 ppm. Related to lithology, structure, manifestation and 222-Rn gas and mercury gas on the value of the gas concentrations of ????????2 ???????????? ????2S by overlaying the spatial distribution map of ????????2 ???????????? ????2S gas concentrations. Lithology conditions do not show a significant correlation to the ????????2 ???????????? ????2S gas concentration values. Structure shows a significant correlation to the gas concentrations of ????????2 ???????????? ????2S. The value of the 222-Rn gas concentration has a significant effect on the value of the ????????2 gas concentration. Meanwhile, the correlation of mercury gas and ????????2 gas was not found in this study, the concentration of ????????2 ???????????? ????2S gas also did not have a significant significance in this study. Based on the analysis of the overlay results of the contour map ????????2 ???????????? ????2S with several factors, discussing two domain locations of potential geothermal fields in the Mount Patuha geothermal field, namely in the Northwest and Southeast regions of the Mount Patuha geothermal field.