2D GEOELECTRIC DATA ANALYSIS FOR COAL LAYER DETERMINATION AND COAL RESOURCE ESTIMATION
Case study in the Neira field, North Kalimantan
DOI:
https://doi.org/10.33579/krvtk.v11i1.6218Keywords:
CoalAbstract
Potensi batubara terdapat di Lapangan Neira Kalimantan Utara, meskipun eksplorasi geofisika di daerah tersebut masih terbatas . Penelitian ini bertujuan untuk mengidentifikasi lapisan batubara berdasarkan nilai resistivitas batuan dan memperkirakan sumber dayanya. Metode yang digunakan adalah geolistrik resistivitas 2D dengan konfigurasi Wenner-Schlumberger dan analisis geostatistik menggunakan kriging biasa pada perangkat lunak SGeMS. Hasil pengolahan data geolistrik resistivitas 2D menunjukkan bahwa lapisan batubara tersebut memiliki nilai resistivitas 90–150 Ωm yang secara umum menunjukkan batubara jenis lignit. Perkiraan sumber daya yang diperoleh melalui pemodelan resistivitas dan interpolasi spasial berjumlah 2.124.510,323 ton, dan setelah koreksi faktor geologi menjadi 650.951,016 ton. Hasil penelitian ini diharapkan dapat menjadi acuan dalam eksplorasi dan pengelolaan batubara berkelanjutan di Kalimantan Utara.
Kata Kunci : Batubara, Estimasi sumber daya, Geolistrik resistivitas 2D, Kriging biasa, Wenner-Schlumberger.
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