Eliminasi Efek Multiple pada Data Seismik Laut Dangkal Menggunakan Metode 2D Surface Related Multiple Elimination (2D SRME)

Andradit, Fikrizan (2018) Eliminasi Efek Multiple pada Data Seismik Laut Dangkal Menggunakan Metode 2D Surface Related Multiple Elimination (2D SRME). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Multiple merupakan data penganggu pada data seismik yang dapat mengakibatkan tidak sesuainya penampang seismik dengan kondisi bawah permukaan bumi. Keberadaan multiple dapat mengakibatkan kesalahan informasi yang ditampilkan oleh data seismik sehingga multiple perlu dieliminasi. Terdapat beberapa metode dalam eliminasi multiple, seperti dekonvolusi tau-p, radon, dan SRME. SRME merupakan metode yang berbasis data dan dapat memprediksi multiple yang lebih baik dari metode lain di near offset. Penelitian ini dilakukan di fungsi Geofisika, Upstream Technology Center PT Pertamina (Persero) menggunakan satu lintasan data sintetis dan lima lintasan data real seismik laut dangkal yang akan diproses dengan perangkat lunak omega 2016. Pengolahan data seismik dilakukan dalam format data shot gather. Dari penelitian yang telah dilakukan, diperoleh hasil eliminasi multiple dengan metode SRME yang efektif di near offset. Pada data far offset, perlu diaplikasikan kombinasi dengan metode lain untuk mendapatkan hasil yang efektif. Kata Kunci: Eliminasi Multiple, Seismik Laut Dangkal, 2D SRME ======================================================================================================================== Multiple is a kind of noise on seismic data which may interfere with the primary data. Both Primary data and multiple were recorded by seismic receiver as a raw data. Misinformation subsurface condition might be showed by seismic data caused by multiple. Therefore, multiple needs to be eliminated. There are several methods for multiple elimination, such as tau-p deconvolution, radon, and SRME. SRME is a data-driven method and can predict multiple better than other methods in near offset. The research was conducted in geophysics function, Upstream Technology Center of PT Pertamina (Persero) using one line of synthetic data and five lines shallow water seismic real data and would be processed using omega 2016 software. Seismic data processing was done in shot gather data format. This research obtained multiple elimination result using SRME method was effective in near offset. In far offset data, it is necessary to apply any combinations with other methods to obtain the most effective results. Keywords: Multiple Elimination, Shallow Water Seismic, 2D SRME

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Eliminasi Multiple, Seismik Laut Dangkal, 2D SRME ============================================================ Multiple Elimination, Shallow Water Seismic, 2D SRME
Subjects: Q Science
Q Science > QC Physics
Q Science > QE Geology
Divisions: Faculty of Civil Engineering and Planning > Geophysics Engineering > (S1) Undergraduate Theses
Depositing User: Fikrizan Hilmy Andradit
Date Deposited: 12 Apr 2018 03:57
Last Modified: 12 Apr 2018 03:57
URI: http://repository.its.ac.id/id/eprint/50808

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