Penentuan Saturasi Air Pada Daerah Formasi Karbonat Dengan Anomaliresistivitas Rendah Dalam Pendekatan Persamaan Indonesia, Persamaan Simandoux Dan Metode Rasio Resistivitas (Studi kasus Lapangan ITS#)

Prabawa, Septa Erik (2008) Penentuan Saturasi Air Pada Daerah Formasi Karbonat Dengan Anomaliresistivitas Rendah Dalam Pendekatan Persamaan Indonesia, Persamaan Simandoux Dan Metode Rasio Resistivitas (Studi kasus Lapangan ITS#). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Saturasi air (Sw) adalah salah satu parameter petrofisika yang penting dalam evaluasi formasi dalam eksplorasi minyak bumi. Metode umum untuk menentukan saturasi air adalah persamaan Indonesia, persamaan Simandoux dan metode rasio resistivitas. Persamaan Indonesia dan persamaan Simandoux digunakan untuk formasi shaly sand. Metode rasio resistivitas merupakan perbandingan resistivitas zona terinvasi dengan zona tak terinvasi dan tidak terpengaruh adanya kandungan serpih dalam formasi. Ketiga metode tersebut di atas diuji untuk penentuan saturasi air di lapangan ITS#. Lapangan ITS# berada dalam formasi karbonat pada daerah anomali resistivitas rendah. Anomali resistivitas rendah dipengaruhi oleh kehadiran mikrit di dalam formasi. Persamaan Indonesia dan persamaan Simandoux merupakan metode untuk menentukan saturasi air di formasi shaly sand. Metode rasio resistivitas merupakan perbandingan resistivitas zona terinvasi dan zona tak terinvasi. Berdasarkan perbandingan dengan data tes (drill stem test), metode rasio resistivitas lebih sesuai untuk lapangan ITS# karena tidak terpengaruh oleh keberadaan serpih dalam formasi.
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Water saturation (Sw) is one of most significant petrophysics parameter for formation evaluation at hydrocarbon exploration. Commonly used methods to determine the water saturation are Indonesian, Simandoux, and resistivity ratio method. Indonesian and Simandoux equation usually used for shaly sand formation. Resistivity ratio method is a comparison between invaded and non-invaded resistivity zone and unaffected by shale which lies within the formation. These methods are used to determine the water saturation at ITS# field. ITS# field lays on carbonate formation at low resistivity anomaly area. These low resistivity anomaly areas are affected by micrite presence at the formation. Indonesia and Simandoux method are used to determine the water saturation at shaly sand formation. Resistivity ratio method is a comparison between invaded and non-invaded zone. From the test data (drill stem test), resistivity ratio method is the most precise method for ITS# field because it’s not affected by shale presence at formation. Indonesian and Simandoux method gives higher water saturation value due to shale volume determined from log GR is high and true resistivity (Rt) is low.

Item Type:	Thesis (Other)
Additional Information:	RSFi 537.622 6 Pra p 2008 3100009035770 (WEEDING)
Uncontrolled Keywords:	Water saturation
Subjects:	G Geography. Anthropology. Recreation > GB Physical geography > GB1197.7 Groundwater flow. Reservoirs
Divisions:	Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Anis Wulandari
Date Deposited:	13 Mar 2026 03:35
Last Modified:	13 Mar 2026 03:35
URI:	http://repository.its.ac.id/id/eprint/132731

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