APPLICATION OF SURFACE CONSISTENT DECONVOLUTION METHOD ON 2D SHALLOW SEISMIC DATA IN WAIPOGA WATER, PAPUA
| Main Authors: | Winjaniatun, Siti Novrianti , Manik, Henry Munandar , Nainggolan, Tumpal Bernhard |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University
, 2021
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| Subjects: | |
| Online Access: |
http://journal.ipb.ac.id/index.php/jurnalikt/article/view/32784 http://journal.ipb.ac.id/index.php/jurnalikt/article/view/32784/21600 |
Daftar Isi:
- The seismic data generated during the acquisition contain complex wavelets and noise such as multiple which results in decreasing temporal resolution of the seismic section. This study aims to compare the application of Surface Consistent Deconvolution (SCD) and predictive deconvolution methods in increasing temporal resolution of seismic sections in 2D shallow water seismic data line C12, C21 and L18 of Waipoga Waters, Papua. This research applies SCD and predictive deconvolution methods. Surface Consistent Deconvolution is applied by decomposing seismic wavelets into source, receiver, offset and midpoint, while predictive deconvolution is applied by making predictions from seismic traces that containing short periods multiple. The seismic sections produced in this study show that the application of both predictive deconvolution methods and SCD can eliminate short-period multiple that found in seismic sections. The Surface Consistent Deconvolution method provides better results in increasing the temporal resolution of seismic sections than predictive deconvolution methods. These results are achieved because SCD method provides better results in compressing the wavelets, increasing the continuity of layers and sharpening the reflectors.
- Data seismik yang dihasilkan saat akuisisi mengandung wavelet yang kompleks dan derau seperti multipel yang mengakibatkan menurunnya resolusi temporal penampang seismik. Penelitian ini bertujuan untuk membandingkan penerapan metode Surface Consistent Deconvolution (SCD) dan dekonvolusi prediktif dalam meningkatkan resolusi temporal penampang seismik pada data seismik laut dangkal 2D lintasan C12, C21 dan L18 di Perairan Waipoga, Papua. Penelitian ini menerapkan metode SCD dan dekonvolusi prediktif. Surface consistent deconvolution dilakukan dengan mendekomposisikan wavelet seismik menjadi sumber, penerima, offset dan midpoint, sedangkan dekonvolusi prediktif dilakukan dengan membuat prediksi dari tras seismik yang mengandung multipel periode pendek. Penampang seismik yang dihasilkan pada penelitian ini menunjukkan bahwa penerapan metode dekonvolusi prediktif maupun SCD dapat menghilangkan multipel periode pendek yang terdapat pada penampang seismik. Metode SCD memberikan hasil yang lebih baik dalam meningkatkan resolusi temporal penampang seismik dibandingkan metode dekonvolusi prediktif. Hal tersebut dikarenakan metode SCD memberikan hasil yang lebih baik dalam memampatkan wavelet, meningkatkan kontinuitas lapisan dan mempertajam reflektor.