Ramadhanty, Aura Zahra (2024) Pemodelan Fisika Batuan dan Carbolog Pada Shale untuk Estimasi Total Organic Carbon (TOC) dan Modulus Elastisitas di Sumur "OrangeBloom", Formasi Ngimbang. Other thesis, Institut Teknologi Sepuluh Nopember.
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5017201041-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (1MB) | Request a copy |
Abstract
Eksplorasi minyak dan gas bumi pada shale dilakukan pada batuan yang memiliki porositas dan permeabilitas rendah. Untuk mendapatkan reservoir shale gas yang prospek perlu menghitung nilai total organic content (TOC). Semakin tinggi nilai TOC pada batuan, prospek hidrokarbon pada reservoir tersebut juga semakin tinggi. Pada penelitian ini, estimasi nilai TOC dihitung menggunakan metode carbolog dengan log sonic dan resistivitas. Selain itu, pada penelitian ini juga dilakukan pemodelan fisika batuan. Pemodelan ini dilakukan dengan membuat model dry rock yang terisi fluida air dan material organik (kerogen) sehingga dihasilkan nilai kecepatan gelombang P pada variasi kalkulasi TOC di setiap kedalaman. Kecepatan gelombang P kalkulasi tersebut akan dilakukan fitting dengan kecepatan gelombang P observasi hingga didapatkan nilai koefisien korelasi. Penelitian ini menunjukkan bahwa nilai rata-rata TOC di sumur OrangeBloom adalah 2.19 wt% yang termasuk dalam kategori very good. Dari hasil penelitian juga didapatkan bahwa volume TOC berpengaruh terhadap nilai Vp, Vs, dan modulus elastisitas. Seluruh variabel tersebut akan semakin menurun seiring dengan meningkatnya nilai TOC.
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Oil and gas exploration in shale gas is carried out in rocks that have low porosity and permeability. To obtain a prospective shale gas reservoir, it is necessary to calculate the total organic content (TOC) value. The higher the TOC value in the rock, the higher the hydrocarbon prospect in the reservoir. In this study, the TOC value estimation is calculated using the carbolog method with sonic and resistivity logs. In addition, in this study, rock physics modeling was also carried out. This modeling is done by making a dry rock model filled with water and organic material (kerogen) so that the value of P-wave velocity is produced in variations of TOC calculations at each depth. The calculated P-wave velocity will be fitted with the observed P-wave velocity to obtain the correlation coefficient value. This study shows that the average TOC value in OrangeBloom well is 2.19 wt% which is included in the very good category. The results also show that the TOC volume affects the values of Vp, Vs, and elastic modulus. All of these variables will decrease as the TOC value increases.
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | Carbolog, Rock Physics Modeling, Shale, Total Organic Carbon, Pemodelan Fisika Batuan |
Subjects: | Q Science > QE Geology |
Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
Depositing User: | Aura Zahra Ramadhanty |
Date Deposited: | 19 Aug 2024 06:51 |
Last Modified: | 19 Aug 2024 06:51 |
URI: | http://repository.its.ac.id/id/eprint/114307 |
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