Nusantara , Eka (2001) Aplikasi Migrasi Metode beda hingga pada pengolahan data Seismik untuk menggambarkan penambang bawah permukaan yang sebenarnya. Undergraduate thesis, FMIPA UNDIP.
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Abstract
Tela.h dilakukan migrasi data seismik dengan metode beda hingga pada pengolahan data seismik refleksi darat 2D. Data seismik diperoleh dari akuisisi data di lapangan, sedangkan pengolahan data dilakukan secara komputasi menggunakan perangkat lunak geovecteue plus 5.1. Proses migrasi metode beda hingga terdiri dari dua tahap yaitu, pertama dilakukan ekstrapolasi medan. gelombang seismik kebawah, ke dua adalah mengumpulkan medan gelombang seismik ke titik t = 0 (imaging principle). Hasil proses migrasi pada penampang seismik ditiinjukan oleh keberadaan reflektor yang semakin tajam (jelas), dimana efek difraksi gelombang dan pengaruh pemantulan ol.eh lapisan miring telah dihilangkan, sehingga reflektor tersebut berada pada posisi yang sebena.rnya. Secara keseluruhan kualitas penampang seismik hash! migrasi lebih balk dibandingkan dengan penampang basil dari proses sebelumnya. Dengan menggunakan data sintesis berupa model geologi bawah permukaan sinklin dapat dibuktikan bahwa proses migrasi dapat menggambarkan penampang bawah permukaa.n yang sebenarnya. A migration has been conducted to a 2D land reflection: Seismic data by utilizing finite difference migration method in Seismic data processing. The processing of the data, that were acquired from a field Seismic acquisition, was carried out computatively by Geovecteur(th plus 5.1 software. Finite difference migration consists of two stages that is firstly conducting the downward seismic wavefield extrapolation and secondly collecting the seismic wavefield to the point oft = 0 (imaging principle). The result of the migration is figured out by some more strongly reflectors in which the diffracted wave and dipping layer reflection effects had been eliminated, then the reflector had been properlY. positioned. Comprehensively, the migrated seismic section is better than the section of the previous processing result. By utilizing a synthetic data in form of a subsurface geological model of syncline, it can be established that the migration process is capable to represent the actual subsurface section
Item Type: | Thesis (Undergraduate) |
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Subjects: | Q Science > QC Physics |
Divisions: | Faculty of Science and Mathematics > Department of Physics |
ID Code: | 30498 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 01 Nov 2011 08:43 |
Last Modified: | 01 Nov 2011 08:43 |
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