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| dc.description.abstract | Penelitian ini dilakukan di Lapangan ABC, yang dikelola oleh PT Pertamina Hulu Rokan, terletak di Sub-Cekungan Aman Utara, bagian timur Cekungan Sumatera Tengah, pada interval Kelompok Pematang yang masih under explored. Tujuan penelitian ini untuk menentukan lingkungan pengendapan dan persebarannya, mengidentifikasi petrofisika zona reservoir dan jenis hidrokarbon sehingga mengetahaui kualitas batuan reservoir dan interval reservoir potensial baru melalui Rock typing metode Hydraulic Flow Unit (HFU).
Penelitian menggunakan data dari empat sumur, yaitu IRP–01, LUG–01, LEKEN–01, dan DIS–01. Data yang dianalisis meliputi lintasan seismik (data eksisting), data wireline, uji kandungan lapisan, conventional core, well summary report, data petrografi, dan data biostratigrafi. Analisis dilakukan secara kuantitatif maupun kualitatif pada karakterisasi reservoir.
Hasil penelitian menunjukkan bahwa lingkungan pengendapan berada pada lingkungan darat, meliputi kombinasi endapan fluvial meandering, deep lacustrine, shallow lake delta, dan fluvial braided. Analisis petrofisika mengidentifikasi zona ekonomis pada interval Upper Red Bed pada empat sumur, yaitu IRP–01 (118,2 feet), LUG–01 (83,67 feet), LEKEN–01 (39,63 feet), dan DIS–01 (123,5 feet). Selanjutnya, berdasarkan hasil perhitungan petrofisika dilakukan perhitungan Rock Typing dan memperoleh empat tipe batuan, dengan Rock Type 1 sebagai tipe terbaik karena memiliki kemampuan mengalirkan fluida yang optimal, kualitas konektivitas pori yang baik, serta distribusi pori yang merata menunjukkan kesesuaian dengan litologi daerah penelitian. Zona potensial yaitu Rock Type 1 yang terdapat pada empat sumur, yaitu pada sumur IRP–01 (interval 5699–5711 feet), LUG–01 (interval 6219–6232 feet dan 6252–6262 feet), LEKEN–01 (interval 4952–4963 feet), dan DIS–01 (interval 5889–5898 feet). | en_US |
