Basundara, ArgyaHastubrata (2016) Karakterisasi Reservoir Menggunakan Analisis Stratigrafi Seismik Dan Atribut Seismik Pada Interval Middle Baong Sand, Formasi Baong (Studi Kasus: Lapangan Alfa, Sub Cekungan Langkat, Cekungan Sum. Sarjana thesis, Universitas Brawijaya.
Abstract
Lapangan ALFA terletak pada Sub Cekungan Langkat, Cekungan Sumatra Utara dengan target interval Middle Baong Sand (MBS). Middle Baong Sand (MBS) terbentuk pada Zaman Mid-Miocenne, di mana merupakan zona transisi dengan tipe jebakan stratigrafi. Penelitian ini dilakukan untuk mengkaji kembali Middle Baong Sand (MBS) dengan menggunakan analisis stratigrafi seismik dan atribut seismik. Analisis elektrofasies dengan melihat pola log gamma ray merupakan modal utama untuk memprediksi pola dan jenis lingkungan pengendapannya. Hasil analisis elektrofasies kemudian dikorelasikan dengan peta hasil interpretasi fasies seismik untuk memprediksi batas pengendapannya. Selanjutnya analisis sekuen stratigrafi serta kronostratigrafi dilakukan untuk selanjutnya dianalisis system tract dan potensi keberadaan reservoirnya. Perlakuan aplikasi metode atribut seismik amplitudo RMS dilakukan untuk mengetahui zona akumulasi sandstone. Penelitian ini dapat menghasilkan prediksi akumulasi tubuh reservoir batupasir pada interval Middle Baong Sand secara vertikal berdasarkan data sumur. Hasil interpretasi fasies seismik menghasilkan peta dengan batas pengendapan shelf, slope, dan basin floor berdasarkan data seismik. Hasil analysis system tract menghasilkan prediksi lingkungan pengendapan berupa tidal delta – coastal plain – tidal delta – coastal plain. Zona akumulasi litologi batupasir (sandprone) dengan orientasi SW diprediksi berdasarkan hasil atribut seismik amplitudo RMS.
English Abstract
ALFA Field is located in Langkat Sub-Basin, North Sumatra Basin with a target Middle Baong Sand (MBS) interval. Middle Baong Sand (MBS) formed during age of Mid-Miocenne, which is transition zone with the type of stratigraphic trap. This study was conducted to re-determine the Middle Baong Sand (MBS) by applying seismic stratigraphy analysis and seismic attributes. Electrofacies analysis using the pattern of gamma ray log is the main to predict the type of depositional environment. The results of the electrofacies analysis was correlated with a map of seismic facies interpretation results to predict the limits of its deposition. Further analysis of stratigraphy sequence and chronostratigraphy done to analyze system tract and the potential presence of reservoir. The application of seismic attribute RMS amplitude methods conducted to determine the accumulation zone of sandstone (sandprone). This study may generates predictive accumulation of bodysand in the Middle Baong Sand intervals vertically based on well data. The results of seismic facies interpretation is a map with depositional limits shelf, slope, and basin floor based on seismic data. System tract analysis generates predictions of depositional environment which are tidal delta-coastal plain-tidal delta-coastal plain. Accumulation zone of sandstone lithology (sandprone) with the orientation SW is predicted based on the results of the seismic attributes RMS amplitude.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2016/528/051612495 |
| Subjects: | 500 Natural sciences and mathematics > 530 Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Kustati |
| Date Deposited: | 06 Dec 2016 11:17 |
| Last Modified: | 06 Dec 2016 11:17 |
| URI: | http://repository.ub.ac.id/id/eprint/155071 |
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