Identifikasi Zona Low Quality Reservoir (LQR) Berdasarkan Analisis Porositas dan Permeabilitas Pada Lapangan AGN, Cekungan Sumatera Selatam

Mulyaningrum, Anggun Fitriana (2025) Identifikasi Zona Low Quality Reservoir (LQR) Berdasarkan Analisis Porositas dan Permeabilitas Pada Lapangan AGN, Cekungan Sumatera Selatam. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu tantangan utama dalam eksplorasi dan pengembangan migas saat ini adalah menghadapi reservoir dengan keberadaan Zona Low Quality Reservoir (LQR). Zona Low Quality Reservoir (LQR), yang dicirikan oleh porositas dan permeabilitas rendah serta kandungan shale atau clay yang tinggi, seringkali terabaikan dalam tahap awal pengembangan. Lapangan AGN, yang mengalami penurunan laju produksi signifikan pada zona produktif utama, menjadi lokasi studi dalam penelitian ini. Penelitian ini bertujuan untuk mengidentifikasi zona LQR melalui analisis petrofisika dan karakterisasi reservoir menggunakan metode Hydraulic Flow Unit (HFU). Pendekatan ini dilakukan untuk memprediksi permeabilitas secara lebih akurat dengan memanfaatkan korelasi antara Flow Zone Indicator (FZI) dan data log sumur. Analisis ini memungkinkan klasifikasi rock type secara detail dan penentuan kualitas reservoir secara lebih tepat. Hasil yang diperoleh menunjukkan bahwa zona LQR masih memiliki potensi hidrokarbon tersembunyi dengan nilai porositas dibawah 11% dan permeabilitas di bawah 19.8 mD yang layak untuk dikembangkan dengan strategi yang tepat. Dengan integrasi data geologi, petrofisika, dan teknik reservoir, penelitian ini memberikan kontribusi dalam peningkatan akurasi identifikasi interval produktif serta mendukung upaya pengembangan lanjutan Lapangan AGN secara lebih efektif dan ekonomis.
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One of the main challenges in oil and gas exploration and development today is dealing with reservoirs with the presence of Low Quality Reservoir (LQR) Zones. Low Quality Reservoir (LQR) zones, which are altered by low porosity and permeability and high shale or clay content, are often overlooked in the early stages of development. The AGN Field, which experienced a significant decline in production rates due to depletion of the main productive zone, is the research location in this study. This study aims to identify LQR zones through petrophysical analysis and reservoir characterization using the Hydraulic Flow Unit (HFU) method. This approach is carried out to predict permeability more accurately by utilizing the correlation between Flow Zone Indicator (FZI) and well log data. This analysis allows for detailed rock type classification and more precise determination of reservoir quality. The results obtained indicate that the LQR zone still has hidden hydrocarbon potential with porosity values below 10% and permeability below 19.8 mD which are feasible to be developed with the right strategy. By integrating geological, petrophysical, and reservoir engineering data, this research contributes to improving the accuracy of productive identification intervals and supports further development efforts of the AGN Field more effectively and economically.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Low Quality Reservoir, Hydraulic Flow Unit, Analisis Petrofisika. Low Quality Reservoir, Hydraulic Flow Unit, Petrophysical Analysis
Subjects:	Q Science > QE Geology > QE601 Geology, Structural
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Anggun Fitriana Mulyaningrum
Date Deposited:	28 Jul 2025 05:35
Last Modified:	28 Jul 2025 05:35
URI:	http://repository.its.ac.id/id/eprint/122078

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