Analisis Petrofisika dan Penentuan Rock Type Metode Pore Geometry Structure pada Reservoar Karbonat Lapangan "MARK"

Simatupang, Markus Artha Bima (2024) Analisis Petrofisika dan Penentuan Rock Type Metode Pore Geometry Structure pada Reservoar Karbonat Lapangan "MARK". Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Lapangan ‘MARK’ berlokasi di cekungan Sumatera Selatan. Penelitian ini dilakukan berfokus pada Formasi Baturaja yang merupakan reservoir karbonat. Reservoir karbonat memiliki masalah yang umum terkait hubungan antara porositas dan permeabilitasnya. Hal ini disebabkan oleh sifat heterogenitas reservoir karbonat yang cukup kompleks. Dalam penelitian ini dilakukan analisis petrofisika dan rock typing metode Pore Geometry Structure (PGS) untuk memahami heterogenitas reservoir karbonat tersebut. Dilakukan analisis petrofisika menggunakan data wireline log dari sebanyak 6 sumur untuk menentukan properti petrofisika. Terdapat juga data RCAL dan SCAL yang digunakan untuk analisis rock typing. Berdasarkan hasil analisis petrofisika Lapangan MARK, rata-rata nilai porositas berada pada kategori sangat baik dengan nilai sebesar 22.4%. Hasil rock typing menggunakan metode PGS pada lapangan ‘MARK’ memperoleh 4 jenis rock types. RT-1 dengan kategori yang paling bagus dari hubungan antara porositas dan permeabilitas melalui pendekatan geometri pori dan struktur porinya, dan RT-4 dengan kategori yang paling buruk. Hasil prediksi permeabilitas metode PGS didapatkan dalam rentan 24-429 md dengan kategori tinggi sampai sangat tinggi. Prediksi permeabilitas menggunakan metode Timur dan PGS divalidasi oleh data permeabilitas core, dimana ditemukan bahwa prediksi permeabilitas dari metode PGS memiliki korelasi yang lebih baik dengan data core dengan nilai korelasi 0.893, lebih tinggi dibandingkan dari metode Timur yang mendapatkan nilai korelasi 0.533.
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The ‘MARK’ field is located in the South Sumatra Basin. This study focuses on the Baturaja Formation, which is a carbonate reservoir. Carbonate reservoirs typically have issues related to the relationship between porosity and permeability. This is due to the complex heterogeneity of carbonate reservoirs. In this study, petrophysical analysis and rock typing using the Pore Geometry Structure (PGS) method were conducted to understand the heterogeneity of the carbonate reservoir. Petrophysical analysis was performed using wireline log data from 6 wells to determine petrophysical properties. Additionally, RCAL and SCAL data were used for rock typing analysis. Based on the petrophysical analysis of the ‘MARK’ field, the average porosity value is categorized as very good, with a value of 22.4%. Rock typing results using the PGS method in the ‘MARK’ field identified four rock types. RT-1 is categorized as the best in terms of the relationship between porosity and permeability through the pore geometry and structure approach, while RT-4 is categorized as the worst. Permeability prediction results using the PGS method ranged from 24 to 429 md, categorized as high to very high. Permeability predictions using the Timur and PGS methods were validated by core permeability data, showing that permeability predictions from the PGS method had a better correlation with core data, with a correlation value of 0.893, compared to the Timur method, which had a correlation value of 0.533.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Batuan Karbonat, PGS, Rock Typing
Subjects:	Q Science > QA Mathematics > QA278.55 Cluster analysis Q Science > QE Geology Q Science > QE Geology > QE471 Sedimentary rocks. Sedimentology Q Science > QE Geology > QE601 Geology, Structural
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	Markus Artha Bima Simatupang
Date Deposited:	13 Aug 2024 04:23
Last Modified:	30 Aug 2024 06:56
URI:	http://repository.its.ac.id/id/eprint/115202

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