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All Journal Jurnal Rekayasa Geofisika Indonesia
Syafira Mpuhu
Universitas Halu Oleo
Computer Science & IT Earth & Planetary Sciences Engineering Physics

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Estimasi Sistem Perlapisan pada Blok-A Area Panas Bumi Lainea Konawe Selatan Menggunakan Vertical Electrical Sounding (Ves) Konfigurasi Schlumberger Syafira Mpuhu; Jamhir Safani; Syamsul Razak Haraty
Jurnal Rekayasa Geofisika Indonesia Vol. 7 No. 02 (2025): Edisi Agustus JRGI (Jurnal Rekayasa Geofisika Indonesia)
Publisher : Program Studi Teknik Geofisika FITK UHO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/jrgi.v7i02.19

Abstract

This research aims to estimate the layering system in the Lainea Geothermal area in South Konawe Regency. The apparent resistivity data obtained from the Pusat Sumber Daya Geologi (PSDG) measured in 2010 using the Schlumberger configuration was inversed with the particle swarm optimization (PSO) method. From the results of data inversion at both sounding points, it was found that there are five layers with different resistivity ranges. The first layer is a thin overburden near the surface with a thickness of 0.5 - 0.7m. The second layer is thought to be conglomerate rock. The third layer is interpreted as cap-rock with meta-sandstone lithology with a resistivity value range of 126.3<ρ<366 Ωm. The fourth layer with sandstone lithology is closely suspected as a fluid accumulation zone with a resistivity value range of 45.4<ρ<69 Ωm. The lowest layer with a resistivity value range of 261<ρ<500 Ωm is interpreted as metamorphic rock which is thought to act as an impermeable layer.
Co-Authors Jamhir Safani Syamsul Razak Haraty