Izvorni znanstveni članak
https://doi.org/10.17794/rgn.2026.2.8
UNVEILING SHALE GAS RESERVOIR STRUCTURES WITH SEISMIC AND MT DATA: WALDIM-BASED STUDY FROM EAST KALIMANTAN INDONESIA
Suharsono Suharsono
; Geophysical Engineering Department, Faculty on Mineral Technology and Energy, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Jl Pajajaran 104, Condongcatur Depok, Sleman Yogyakarta, 55283, Indonesia
*
Yustisio Dianwiyono
; Geophysical Engineering Department, Faculty on Mineral Technology and Energy, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Jl Pajajaran 104, Condongcatur Depok, Sleman Yogyakarta, 55283, Indonesia
Edy Wijanarko
; Testing Center for Oil and Gas “LEMIGAS”, Indonesia, Jl. Ciledug Raya No. 109, South Jakarta, 12230, Indonesia
Wahyu Hidayat
; Geophysical Engineering Department, Faculty on Mineral Technology and Energy, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Jl Pajajaran 104, Condongcatur Depok, Sleman Yogyakarta, 55283, Indonesia
Muhammad Fachrul Rozi Kurniawan
; Geophysical Engineering Department, Faculty on Mineral Technology and Energy, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Jl Pajajaran 104, Condongcatur Depok, Sleman Yogyakarta, 55283, Indonesia
Yudha Agung Pratama
; Geophysical Engineering Department, Faculty on Mineral Technology and Energy, Universitas Pembangunan Nasional “Veteran” Yogyakarta, Jl Pajajaran 104, Condongcatur Depok, Sleman Yogyakarta, 55283, Indonesia
* Dopisni autor.
Sažetak
The Pamaluan Formation, which has a Total Organic Carbon (TOC) value of up to 1.78% and varying degrees of thermal maturity, offers the Indonesian Kutai Basin considerable potential for shale gas production. This research integrates seismic and magnetotelluric (MT) geophysical techniques to improve the knowledge of shale gas prospectivity in the area. There are nine MT sounding locations and nine 2D seismic lines in the dataset. By creating a time structure map, the anticline and syncline structures that were detected by seismic interpretation were further examined. 2D resistivity inversion models were created by processing MT data using the rho variance approach and the Python WALDIM module. A dominant anticline-syncline structural trend oriented roughly 45° from true north is indicated by the data. With an average strike of 43.5°, MT analysis demonstrates a dominant two-dimensional (2D) geoelectrical dimensionality that is in good agreement with local geological trends. At depths of 500–1000 m in anticlines and 2000–3000 m in synclines, zones of low resistivity (1–5 Ohm.m) were found, with thicknesses varying from 2000 to 4000 m. Low resistivity anomalies are interpreted to represent potential shale gas-bearing intervals, consistent with the geological framework of the Kutai Basin. The integration of seismic and MT data successfully delineates folds, faults, and low-resistivity anomalies, interpreted as potential shale gas-bearing intervals, highlighting the significance of a multidisciplinary approach in mitigating exploration risk and enhancing shale gas prospectivity evaluation in the Kutai Basin.
Ključne riječi
shale gas; Kutai Basin; seismic; magnetotelluric; WALDIM
Hrčak ID:
345682
URI
Datum izdavanja:
13.3.2026.
Posjeta: 291 *