Pengolahan Data Seismik Pada Daerah Batuan Vulkanik

Irshadibima, Raden Bagus Fauzan (2017) Pengolahan Data Seismik Pada Daerah Batuan Vulkanik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Eksplorasi sumber daya energi minyak dan gas sudah banyak dilakukan di berbagai macam lingkungan. Salah satunya reservoir minyak dan gas yang dapat terbentuk di lingkungan batuan beku (vulkanik). Pada lingkungan batuan beku, gelombang yang menjalar melewati permukaan batuan beku akan terpantul atau mengurangi amplitudo seismik, sehingga data seismik yang terbaca akan mengalami banyak gangguan. Oleh sebab itu, dilakukan penelitian tentang “Pengolahan Data Seismik Pada Daerah Batuan Vulkanik” yang bertujuan untuk mengetahui tahapan pengolahan data seismik dan pengaruh dari hadirnya reflektor batuan beku terhadap hasil dari pengolahan data seismik. Tahapan yang digunakan dalam pengolahan dibagi menjadi empat tahap utama yaitu Pre-Processing, Processing, dan Pre-Conditioning kemudian terakhir dilakukan migrasi menggunakan metode Post-Stack F-K Migration. Setelah dilakukan pengolahan data seismik, didapatkan penampang stacking seismik yang memperlihatkan event seismik pada rentang waktu 1000 – 3500 ms dan hilang pada CDP 100-500 yang merupakan lapisan vulkanik, dan dapat disimpulkan bahwa pengaruh reflektor vulkanik terhadap data seismik adalah memiliki kecepatan yang sangat besar daripada lingkungannya, gelombang frekuensi tinggi yang tidak dapat menembus lapisan tersebut, dan elevasi pada daerah lapisan vulkanik yang tinggi.
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Exploration of petroleum resources have been done in many type of environment. Petroleum system can be formed in igneous rock environment (volcanic), because of this rock properties, seismic wave that spread across this type of rock will be reflected or the amplitude will decrease, therefore obtained seismic data will encounter so many disturbance. Hence, it is necessary to research according to this topic with title “Seismic Data Processing in Volcanic Area” with objective to find out step for seismic processing and the impact for seismic processing with volcanic reflector present in the area. Step that used in this research is divide to three main phase, Pre-Processing, Processing, and Pre-Conditioning, last will be applied migration with Post Stack F-K Migration method. After processing have been done, the final result is seismic stack which show seismic event in 1000 – 3500 ms time and this event disappear in 100-500 CDP which appear to be volcanic reflector, and thus the impact of this reflector to seismic data is high velocity compared to surrounding area, high frequency wave that cannot penetrate this reflector, and high elevation at the top of volcanic reflector which affect the result of static correction.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Pengolahan Data, Seismic, Batuan Beku Vulkanik, Processing Data, Volcanic Igneous Rock
Subjects:	Q Science > QE Geology > QE601 Geology, Structural
Divisions:	Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis
Depositing User:	RADEN BAGUS FAUZAN IRSHADIBIMA
Date Deposited:	21 Apr 2017 08:46
Last Modified:	27 Dec 2017 08:13
URI:	http://repository.its.ac.id/id/eprint/3425

Available Versions of this Item

• PENGOLAHAN DATA SEISMIK PADA DAERAH BATUAN VULKANIK. (deposited 26 Jan 2017 01:37)
  • Pengolahan Data Seismik Pada Daerah Batuan Vulkanik. (deposited 21 Apr 2017 08:46) [Currently Displayed]

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