Karakterisasi Reservoir Pada Lapangan X Menggunakan Metode Inversi Acoustic Impedance (AI)
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Institusion
Universitas Jambi
Author
Alessandro, Refri
Subject
L Education (General)
Datestamp
2023-10-11 04:20:38
Abstract :
Dalam penentuan karakterisasi reservoir metode yang paling umum digunakan adalah metode inversi seismik inversi impedansi akustik (AI). Metode inversi impedansi akustik ini melibatkan data seismik 3D PTSM dan 2 data sumur diaplikasikan guna mendapatkan parameter impedansi akustik dan nilai porositas dalam karakterisasi suatu reservoir sehingga memberikan informasi seputar reservoir berdasarkan peta persebarannya. Berdasarkan penelitian yang dilakukan didapati batasan impedansi akustik untuk zona sand pada zona target yaitu antara 6000-8000 (m/s)*(gr/cc) dengan nilai porositas 18-34%. Terdapat adanya anomali disekitar zona reservoir yang memiliki nilai impedansi akustik yang tinggi dimana hal ini diduga adanya perselingan dengan jenis batuan shale. Kata kunci: Reservoir, impedansi akustik, porositas, inversi seismik berbasis model. In determining reservoir characterization, the most commonly used method is the acoustic impedance inversion (AI) seismic inversion method. This acoustic impedance inversion method involves 3D PTSM seismic data and 2 well data applied to obtain acoustic impedance parameters and porosity values in characterization of a reservoir so as to provide information about the reservoir based on its distribution map. Based on research conducted, it was found that the acoustic impedance limit for the sand zone in the target zone is between 6000-8000 (m/s)*(gr/cc) with a porosity value of 18-34%. There are anomalies around the reservoir zone which have high acoustic impedance values, which is thought to be interspersed with shale rock types. Key words: Reservoir, acoustic impedance, porosity, model-based seismic inversion.
Dalam penentuan karakterisasi reservoir metode yang paling umum digunakan adalah metode inversi seismik inversi impedansi akustik (AI). Metode inversi impedansi akustik ini melibatkan data seismik 3D PTSM dan 2 data sumur diaplikasikan guna mendapatkan parameter impedansi akustik dan nilai porositas dalam karakterisasi suatu reservoir sehingga memberikan informasi seputar reservoir berdasarkan peta persebarannya. Berdasarkan penelitian yang dilakukan didapati batasan impedansi akustik untuk zona sand pada zona target yaitu antara 6000-8000 (m/s)*(gr/cc) dengan nilai porositas 18-34%. Terdapat adanya anomali disekitar zona reservoir yang memiliki nilai impedansi akustik yang tinggi dimana hal ini diduga adanya perselingan dengan jenis batuan shale. Kata kunci: Reservoir, impedansi akustik, porositas, inversi seismik berbasis model. In determining reservoir characterization, the most commonly used method is the acoustic impedance inversion (AI) seismic inversion method. This acoustic impedance inversion method involves 3D PTSM seismic data and 2 well data applied to obtain acoustic impedance parameters and porosity values in characterization of a reservoir so as to provide information about the reservoir based on its distribution map. Based on research conducted, it was found that the acoustic impedance limit for the sand zone in the target zone is between 6000-8000 (m/s)*(gr/cc) with a porosity value of 18-34%. There are anomalies around the reservoir zone which have high acoustic impedance values, which is thought to be interspersed with shale rock types. Key words: Reservoir, acoustic impedance, porosity, model-based seismic inversion.
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