Magnetotelluric method aplication for conceptual modelling of geothermal system Pariangan West Sumatera

Kusmita, Tri; Fath, A.M.; N, Mz; Joni, Wiwid

doi:10.1088/1755-1315/599/1/012038

Cited by 7 publications

(8 citation statements)

References 4 publications

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“…The Bostick curve is in the form of apparent resistivity, while the Occam curve is in the form of real resistivity [27]. Occam's algorithm is the main emphasis of this model since it is more accurate and has a smaller error value than Bostick's algorithm [28].…”

Section: One-dimensional and Two-dimensional Inversionmentioning

confidence: 99%

Identification of shale gas existence based on 2-dimensional magnetotelluric data in the Kutai basin, East Kalimantan, Indonesia

Putri,

Hawan,

Hapsoro

et al. 2024

J. Phys.: Conf. Ser.

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Research on unconventional methods in the shale gas exploration process has begun to be developed to meet the demand for oil and natural gas sustainability. The research area is located in the Kutai Basin, East Kalimantan, Indonesia. The current study from the Geological Survey Center shows that the Kutai Basin has 46.79 TCF of shale gas potential. The magnetotelluric (MT) method was applied in this study to describe the distribution of subsurface resistivity values. The inversion schemes performed in the MT method are 1-dimensional and 2-dimensional inversions. In this study, there are 8 measurement stations in one line. The presence of low resistivity values or conductive zones identifies the potential for black shale layers. The potential for shale gas is suspected to be detected at station KT29, which is included in the Pamaluan Formation, and at stations KT12, KT31, KT13, and KT15, which are included in the Pulaubalang Formation, because it is associated with source rock from petroleum in the Kutai Basin system, as supported by previous research data.

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Section: One-dimensional and Two-dimensional Inversionmentioning

confidence: 99%

Identification of shale gas existence based on 2-dimensional magnetotelluric data in the Kutai basin, East Kalimantan, Indonesia

Putri,

Hawan,

Hapsoro

et al. 2024

J. Phys.: Conf. Ser.

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“…Struktur geologi dan densitas batuan pada sistem panas bumi dapat di identifikasi menggunakan metode gravity [6] [7] maupun metode Magnetotelurik [8]. Metode gravity melibatkan hukum newton yang dinyatakan oleh persamaan 1 berikut [9]:…”

Section: Pendahuluanunclassified

Analisis Anomali Gravity Daerah Panas Bumi Non-Vulkanik Di Bangka Tengah (Studi Kasus Panas Bumi Terak dan Keretak)

Gusnia

Kusmita

Indriawati

2022

JRFI

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Central Bangka is one area that has geothermal potential such as the Terak and Keretak area. These area have hot spring manifestation. Geothermal manifestations in Bangka is the type of non-volcanic radiogenic geothermal. Origin sources of this manifestation suspected from rocks run into the crack, folds and faults. The purpose of this study was to identify rock speading in geothermal area and it’s correlation between geothermal manifestation in Terak and Keretak. he data obtained from the TOPEX/Poseidon satellite is in the form of FAA (Free Air Anomaly) data. The data is then corrected using Burger correction and field correction. Spectral analysis was performed by Fourier transform with moving average filter. The results showed that Complete Bouger Anomaly has 13 mGal-39 mGal. Regional anomaly has 5,4 mGal - 9.8 mGal. Residual anomaly has 7 mGal sampai 29 mGal. There area was consist of intrusive granite rock from the Granite Klabat formation, clas and sandstone from Tanjung Genting Formation. Gravity anomaly shown Geothermal Terak and Keretak are composed of the same distribution of rock.

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“…Ekplorasi geothermal menggunakan metode geofisika sudah banyak dilakukan, siantaranya magnetotelurik [3], geolistrik [2], gravity [4]. Berdasarkan metode Geolistrik sebaran sumber air panas di daerah Nyelanding mengarah dari Barat ke Timurlaut dengan batu penyusunnya yaitu air tanah, batu lempung, batu lanau, batu pasir, kerikil kering, dan batu granit [5].…”

Section: Pendahuluanunclassified

Identifikasi Struktur Tektonik Sistem Geothermal Non-Vulkanik Daerah Nyelanding dan Permis Bangka Selatan Menggunakan Metode Gravity

Afni¹,

Kusmita²

2021

JRFI

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Non-volcanic geothermal is a heat system that is not related to volcanism such as in Nyelanding and Permis areas. In previous studies, hot springs in the Nyelanding area were spread from West to Northeast, with the constituent rocks of sandstone, dry gravel and granite. In the Permis area, the manifestation is influenced by shear faults trending Northwest to Southeast and the geothermal source is granite. Therefore, this study was conducted to determine the strenght of local tectonic structures using the gravity method. The data used in this study are the FAA (Free Air Anomaly) and topography data obtained through the TOPEX website. The gravity anomaly is obtained by performing spectral analysis using the Fourier Transform and moving average filter. 2D modeling is performed using inverse modeling with the smoothness constraint equation. The result of this research is that the Permis and Nyelanding geothermal systems are controlled by local tectonic structures in the Northwest and Southeast of the study area, in the form of fractures (possibly faults) with a Northeast – Southwest direction

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Magnetotelluric method aplication for conceptual modelling of geothermal system Pariangan West Sumatera

Cited by 7 publications

References 4 publications

Identification of shale gas existence based on 2-dimensional magnetotelluric data in the Kutai basin, East Kalimantan, Indonesia

Identification of shale gas existence based on 2-dimensional magnetotelluric data in the Kutai basin, East Kalimantan, Indonesia

Analisis Anomali Gravity Daerah Panas Bumi Non-Vulkanik Di Bangka Tengah (Studi Kasus Panas Bumi Terak dan Keretak)

Identifikasi Struktur Tektonik Sistem Geothermal Non-Vulkanik Daerah Nyelanding dan Permis Bangka Selatan Menggunakan Metode Gravity

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