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Identifikasi Persebaran Reservoir Batupasir Menggunakan Dekomposisi Spektral Berbasis Continous Wavelet Trasnform (CWT) Pada Daerah “BASBAR???
INTISARI
Metode Continuous Wavelet Transform ialah salah satu metode dekomposisi spektral berdasarkan transformasi wavelet untuk mendeteksi hidrokarbon dan sebagai indikator stratigrafi dalam domain time-frequency. Aplikasi metode dekomposisi spektral CWT pada penelitian ini digunakan di daerah lapisan tipis yaitu Formasi Talangakar dengan data seismik 3D Post Stack Time Migrated (PSTM). Penelitian ini memecah ke dalam beberapa frekuensi yakni diantara 10 Hz hingga 40 Hz. Penelitian ini mendapatkan hasil peta atribut metode dekomposisi spektral Continuous Wavelet Transfrom (CWT) tiap frekuensi yang dicacah. Peta atribut domain time-frequency yang menggambarkan daerah prospek pada penelitian ini ialah frekuensi 10 dan 20 Hz. Peta atribut time-frequency metode dekomposisi spektral CWT pada penelitian ini dapat menggambarkan daerah prospek reservoir sumur produksi.
Kata kunci: Continuous Wavelet Transform, Dekomposisi Spektral, Peta Atribut Frekuensi.
ABSTRACT
Continuous Wavelet Transform (CWT) method is the one that used wavelet transform based spectral decomposition methods for detection of hydrocarbon and as an indicator of stratigraphic due to time-frequency resolution. CWT based on spectral decomposition was applied on a 3D Post Stack Time Migration (PSTM) seismic data and applied in Talangakar Formation. Frequency slices of 10 Hz to 40 Hz were extracted from seismic horizon and got the time-frequency map based on CWT method. Frequency slices of 10 Hz and 20 Hz was analyzed for the potential hydrocarbon and stratigraphy. The time- frequency map based on spectral decomposition could give the information about the prospect area of the reservoir around the wells.
Keywords: Continuous Wavelet Transform Method, Spectral Decompositon, time-frequency map.
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