Aplikasi Metode Surface Related Multiple Elimination (SRME) dan Radon Parabolik pada Data Seismik 2D Bryant Canyon Lepas Pantai Louisiana Texas

Authors

  • Selly Remiandayu Jurusan Fisika FMIPA Universitas Andalas
  • Elistia Liza Namigo Jurusan Fisika FMIPA Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.5.3.261-267.2016

Abstract

Multiple adalah salah satu bentuk noise yang sering muncul pada data seismik laut akibat kontras impedansi antar lapisan batuan. Keberadaan multiple pada data seismik mengakibatkan berkurangnya kualitas gambaran bawah permukaan yang dapat menyebabkan kesalahan pada saat interpretasi data, terutama untuk data seismik laut dalam dengan struktur geologi bawah permukaan yang kompleks. Salah satu metode yang digunakan dalam menghilangkan multiple adalah metode Surface Related Multiple Elimination (SRME). Metode SRME menggunakan pendekatan prediksi multiple dimana prediksi multiple ini kemudian dikurangi dengan data input sehingga didapatkan hasil data seismik yang bebas dari multiple. Metode SRME tidak memerlukan informasi bawah permukaan dan model kecepatan dalam memprediksi multiple. Pada penelitian ini metode SRME diterapkan pada 4 line dari data seismik 2D Bryant Canyon Lepas Pantai Louisiana Texas.  Penelitian dilakukan dengan mengunakan software Geomage. Hasil penelitian menunjukkan bahwa metode SRME cukup efektif digunakan untuk menekan keberadaan multiple, terutama untuk jenis water-bottom multiple namun, metode ini masih belum optimal dalam mengatenuasi multiple di daerah far-offset. Oleh karena itu, pada penelitian ini juga dilakukan kombinasi metode SRME dengan metode radon parabolik untuk dapat menghilangkan multiple secara lebih optimal.

Kata kunci: multiple, metode seismik, Geomage, Surface Related Multiple Elimination (SRME), radon parabolik.

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Published

2016-07-03

Issue

Vol. 5 No. 3 (2016)

Section

Articles

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Copyright (c) 2016 Selly Remiandayu, Elistia Liza Namigo

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