BKG

Sinaga, Mandala Tunggul (2017) Karakterisasi Reservoar Menggunakan Atribut Amplitudo Seismik Dan Inversi Seismik Impedansi Akustik Pada Lapangan “Dalihan Natolu” Formasi Batu Raja Cekungan Sumatera Selatan. Sarjana thesis, Universitas Brawijaya.

Indonesian Abstract

Studi ini dilakukan untuk menganalisis penyebaran reservoar berdasarkan atribut amplitudo seismik serta mengidentifikasi karakter reservoar berdasarkan hasil inversi impedansi akustik dan peta persebaran porositas hasil inversi impedansi akustik pada Lapangan Dalihan Natolu. Data yang digunakan pada penelitian ini berupa data sumur, data checkshot, dan data seismik 3D PSTM(Post Stack Time Migration). Berdasarkan data log Neutron Porosity dan log Density pada sumur Aganis didapatkan informasi potensi kandungan gas pada Lapangan Dalihan Natolu yang menjadi pendorong untuk dilaksanakannya penelitian ini. Berdasarkan hasil analisis sensitivitas batuan, antara log Porositas dan Impedansi-P dengan pewarnaan Saturas air, didapatkan bahwa pada saat nilai impedansi batuan kurang dari 20000(ft/s)(g/cc), nilai impedansi batuan memiliki harga saturasi air dibawah 65% atau 0.65 dengan nilai porositas batuan lebih dari 25 %. Karakter reservoar pada Lapangan Dalihan Natolu berdasarkan hasil analisis atribut amplitudo seismik memiliki nilai amplitudo antara 4000 – 21000, dan berdasarkan hasil inversi seismik memiliki nilai impedansi akustik berkisar antara 11000(ft/s)(g/cc) – 45000(ft/s)(g/cc), serta berdasarkan persebaran porositas hasil inversi seismik memiliki nilai porositas maksimal 0,45 atau 45%. Area yang memiliki potensi terkandungnya hidrokarbon pada Lapangan Dalihan Natolu yaitu area yang memiliki nilai amplitudo yang relatif rendah, nilai impedansi < 20000 (ft/s)(g/cc) dan harga porositas maksimal sebesar 0,42 atau 42%.

English Abstract

This study was conducted in order to analyze the distribution of reservoir based on seismic amplitude. In addition, this study was also to indentify the characeristics of reservoir based on acoustic impedance inversion, and also the distribution of porosity, resulted from acoustic impedance inversion on Dalihan Natolu field. The data used in this research are well, checkshot and 3D seismic PSTM ( Post Stack Time Migration) data. Based on Neutron Porosity log and Density log at Aganis well, the hidrocarbon can be obtained on Dalihan Natolu field. Thus the condition can be used as supporting for this research. Based on the result of rock sensitivity analysis between Porosity log and P-Impedance with coloring water saturation, when rock impedance value less than 20000(ft/s)(g/cc), it was found that water saturation value below 65% or 0.65 within rock porosity value more than 25%. The resevoir characteristic on Dalihan Natolu which based on seismic amplitude analysis result has acoustic impedance value ranging from 11.000(ft/s)(g/cc) to 45.000(ft/s)(g/cc) and based on porosity distribution from seismic inversion result has the maximum porosity value 0.45 or 45%. The area that has the hydrocarbon potential on Dalihan Natolu field was characterized with low amplitude, impedance value less than 20000(ft/s)(g/cc) and the maximum porosity value is 0.42 or 42 %.

Other Language Abstract

UNSPECIFIED

Item Type: Thesis (Sarjana)
Identification Number: SKR/FMIPA/2017/558/051801065
Uncontrolled Keywords: Atribut amplitudo seismik, analisis sensitivitas, inversi seismik impedansi akustik, prediksi penyebaran porositas, Seismic amplitude atribute, sensitivity analysis, accoustic impedance seismic inversion, prediction of porosity distribution
Subjects: 600 Technology (Applied sciences) > 627 Hydraulic engineering > 627.8 Dams and reservoirs > 627.86 Reservoirs
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika
Depositing User: Nur Cholis
URI: http://repository.ub.ac.id/id/eprint/8640
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