THE CHARACTERISTICS OF BASE OF CONDUCTOR IN X GEOTHERMAL FIELD BASED ON THE MAGNETOTELLURIC AND WELL DATA

KARAKTERISTIK BASE OF CONDUCTOR DI LAPANGAN PANAS BUMI X PULAU FLORES BERDASARKAN DATA MAGNETOTELLURIK DAN SUMUR EKSPLORASI

  • Dizanissa Purnama Sari University of Indonesia
  • Yunus Daud University of Indonesia, KS Orka
  • Haris Siagian University of Indonesia
Kata Kunci: Base of conductor, Panas Bumi, Magnetotellurik, Data Sumur, Resistivitas, Inversi 3D

Abstrak

Lapangan Panas Bumi X di Pulau Flores, Nusa Tenggara Timur, memiliki manifestasi termal permukaan seperti mata air panas, fumarol, dan batuan alterasi, yang mengindikasikan potensi sumber daya panas bumi. Penelitian ini bertujuan untuk memodelkan dan mengkarakterisasi base of conductor di lapangan panas bumi X sebagai data pendukung eksplorasi panas bumi. Pemodelan dilakukan dengan menggunakan analisis inversi 3D magnetotellurik yang dikorelasikan dengan data sumur yaitu serbuk bor, metilen biru, dan Uji Tekanan dan Temperatur. Berdasarkan hasil penelitian, kondisi bawah permukaan daerah penelitian terdiri dari zona argilik sekitar 400-300 mdpl, zona transisi sekitar 300 dan 0 mdpl, dan zona propilitik di bawah 0 mdpl. Pada ketinggian 400-300 mdpl, base of conductor menandai batas antara reservoir dan claycap. Peta sebaran BOC menunjukkan bahwa rata-rata elevasi BOC adalah antara 300 dan 550 meter di atas permukaan laut. Potensi eksplorasi tertinggi terdapat di bagian utara daerah penelitian dengan luas prospek 3,4 km2.

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Diterbitkan
2023-06-23
Bagian
Buletin Sumber Daya Geologi