Analisis Multi-Atribut dan Jaringan Syaraf Tiruan dengan Optimalisasi Filter untuk Deteksi Patahan Penampang Seismik Lapangan F3 Laut Utara Belanda

Authors

  • Melanz Hasan Laboratorium Fisika Bumi, Jurusan Fisika FMIPA Universitas Andalas
  • Elistia Liza Namigo Laboratorium Fisika Bumi, Jurusan Fisika FMIPA Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.7.3.215-221.2018

Abstract

Identifikasi patahan merupakan salah satu langkah awal dalam interpretasi seismik dan menjadi komponen penting dalam pengembangan strategi eksplorasi. Deteksi patahan dilakukan dengan metode analisis multi-atribut dan jaringan syaraf tiruan (JST). Metode ini diterapkan pada data blok F3 Sektor Laut Utara Belanda. Atribut seismik yang digunakan sebagai data masukan terdiri dari similarity, spectral decomposition, curvature, dip dan semblance. Pickset yang digunakan pada penelitian ini terdiri dari pickset pada patahan besar dan patahan kecil dengan jumlah 400 pick. Data latih yang digunakan pada pelatihan JST adalah penampang seismik pada inline 325. Penampang seismik yang digunakan sebagai data uji adalah inline 256 dan 272. Hasil pelatihan JST dengan kombinasi multi-atribut similarity, spectral decomposition dan semblance menunjukan efektifitas yang paling tinggi untuk deteksi patahan. Pelatihan JST pada patahan besar secara visual menghasilkan kualitas deteksi yang lebih baik dibandingkan dengan patahan kecil. Penerapan fault enhancement filter (FEF) menghasilkan penampang seismik yang lebih tajam sehingga mempermudah proses picking dan menghasilkan pelatihan JST yang lebih baik dengan nilai error lebih kecil. Pickset yang sudah dilatih pada inline 325 dapat diterapkan pada data uji dengan probabilitas patahan yang makin jelas dan tajam dengan nilai misclassification error 2,56%.


Kata kunci: deteksi patahan, jaringan syaraf tiruan, analisis atribut

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Published

2018-07-02

How to Cite

Hasan, M., & Namigo, E. L. (2018). Analisis Multi-Atribut dan Jaringan Syaraf Tiruan dengan Optimalisasi Filter untuk Deteksi Patahan Penampang Seismik Lapangan F3 Laut Utara Belanda. Jurnal Fisika Unand, 7(3), 215–221. https://doi.org/10.25077/jfu.7.3.215-221.2018

Issue

Vol. 7 No. 3 (2018)

Section

Articles

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Copyright (c) 2018 Melanz Hasan, Elistia Liza Namigo

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