Potensi Batuan Induk Hidrokarbon Serpih Warukin di Tampang Tumbang Anjir, Kabupaten Gunung Mas Propinsi Kalimantan Tengah
DOI:
https://doi.org/10.30588/jo.v5i2.988Keywords:
fasies, batuan induk, potensi, kualitas, dan kematanganAbstract
Identifikasi interval batuan yang mungkin berpotensi sebagai batuan induk merupakan langkah awal eksplorasi yang penting, oleh sebab itu perlu dilakukan penelitian tentang potensi batuan sedimen yang mengandung bahan organik dengan kadar tertentu, yang oleh panas dan waktu dapat menghasilkan hidrokarbon dalam bentuk minyak atau gas secara tepat. Penelitian ini bertujuan untuk mengidentifikasi fasies dan potensi batuan induk hidrokarbon Formasi Warukin di Tampang Tumbang Anjir, Cekungan Barito.
Analisis geokimia guna mengetahui potensi dan kualitas batuan induk dilakukan pada serpih penyusun Formasi Warukin. Hasil analisis potensi dan kualitas Batuan Induk menunjukkan kandungan TOC 17,97% termasuk “sangat baik”. Rock-Eval menunjukkan bahwa serpih berpotensi “baik” sebagai batuan induk hidrokarbon (S2 = 67,87 mg/g). Angka Tmax 405 menunjukkan tingkat pematangan hidrokarbon belum tercapai. Nilai HI yang relatif tinggi mencerminkan bahwa batuan ini jika mencapai kematangan akan cenderung menghasilkan minyak dan gas. Nilai HI antara 378 mgHC/g umumnya berasal dari kerogen tipe II yang secara dominan mengandung unsur organisme laut dan darat.
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