Identifikasi Struktur Bawah Permukaan berdasarkan Analisis Data Gayaberat di Daerah Palembang dan sekitarnya sebagai Cekungan Potensi Hidrokarbon

Eddy Mirnanda, Alfalah Adam Saputra, Lukman Arifin

Abstract

Research has been conducted in the Palembang and surroundings areas using gravity data with the aim of knowing the basin structure that has hydrocarbon potential based on 2D and 3D modeling. The Palembang and surroundings areas is one of the regions that has hydrocarbon potential which is characterized by several Sub-Basins namely the South Jambi Sub-Basin, the North Palembang Sub-Basin, and the West Palembang Sub-Basin. The study area has a Complete Bouguer Anomaly value (CBA) between +21 mGal to +55 mGal. Based on 2D modeling, rocks with a density value of around 2.35 gr/cm3 are identified as reservoir zones located in the Talang Akar Formation with depths of around 4000 meters to 5000 meters below the surface. Rocks with density values between 2.35 gr/cm3 to 2.40 gr/cm3 are identified assealsin the form of shale as cover rocks that are good at trapping hydrocarbons. In 2D modeling there are fault structures in the form of normal faults and reverse faults that are identified based on analysis Second Vertical Derivative (SVD). Based on 3D gravity inversion modeling, the reservoirzone was found to be at a depth of about 4000 meters to 5000 meters below the surface which has a density value between 2.31 gr/cm3 to 2.53 gr/cm3.


Keywords

Hydrocarbons; reservoirs; gravity anomalies; 2D and 3D models.

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References

  1. Badan Geologi. 2009. Peta Cekungan Sedimen Indonesia berdasarkan Data Geologi dan Geofisika skala 1 : 5.000.000. Bandung.
  2. Setiadi, I., Setyanta, B.,& Widjono, B.S. 2010. Delineasi Cekungan Sedimen Sumatera Selatan Berdasarkan Analisis Data Gayaberat, Jurnal Sumber Daya Geologi (JGSDG), 20(2), 95-106.
  3. Pulunggono, A., & Cameron, N.R. 1984. Sumatra Mictroplates, their Characteristics and Their Role in the Evolution of The Central Sumatera Basins. Proceedings Indonesian Petroleum Association.
  4. Panggabean, H.,& Santy, L,, D. 2012. Sejarah Penimbunan Cekungan Sumatera Selatan dan Implikasinya Terhadap Waktu Generasi Hidrokarbon, Jurnal Sumber Daya Geologi (JSDG), 22(4), 225-235.
  5. Ariyanto, M.,V. 2017. Pemodelan Impedansi Akustik untuk Karakterisasi Reservoir Pada Daerah “X”, Sumatera Selatan. FMIPA Universitas Indonesia
  6. De Coster, G. 1974. The Geology of Central and South Sumatera Basins. Proceedings Indonesian Petroleum Association Third Annual Convention.
  7. Telford, W.M., Geldart, L.P., Sheriff, R.E., Keys. D.A. 1990. Applied Geophysics Second Edition. New York : Cambridge University Press.7.
  8. Elkins, T.A., 1951. The Second Derivative Method of Gravity Interpretation, Geophysics, 16(1), 29-50.
  9. Mirnanda, E., Buyung, N., & Warker, A., D. 1991. Peta Anomali Bouguer Lembar Palembang (Sumatera) Skala 1:250.000. Pusat Penelitian dan Pengembangan Geologi, Bandung (terbit).
  10. Brigham, E.O., 1988. The fast Fourier Transform and its applications. Printice-Hall International Inc.
  11. Blakely, R.J. 1996. Potential Theory in Gravity and Magnetic Applications. Cambridge University Press, 464 ISBN: 9780521575478, 0521575478.
  12. Gafoer, S., Burhan, G., & Purnomo, P. 1995. Peta Geologi Lembar Palembang, Sumatera Selatan. Skala 1 : 250.000. Pusat Penelitian dan Pengembangan Geologi, Bandung.
  13. Pulunggono, A. H. 1992. Pre-Tertiary And Tertiary Fault System As a Farmwork of The South Sumatra Basin; a Study Of Sar-Maps. Proceedings Indonesian Petroleum Association.
  14. Firmansyah, Y., Riaviandhi, D., & Muhammad, R. 2016. Sikuen Stratigrafi Formasi Talang Akar Lapangan “DR”, Subcekungan Jambi, Cekungan Sumatera Selatan. Bulletin of Scientific Contribution, 14(3), 263 – 268
  15. Purnomo, J. 2013. Pemisahan Anomali Regional-Residual pada Metode Garvitasi menggunakan Metode Moving Average, Polynomial dan Inversion. ISSN:2089-0133. Indonesian Journal of Applied Physics (IJAP).
  16. Agustin, M.,V. 2017. Sekuen Stratigrafi Sub-Cekungan Palembang Selatan Berdasarkan Data Pemboran Pada Sumur "SSB", Kabupaten Musi Rawas, Provinsi Sumatera Selatan. Proceeding, Seminar Nasional Kebumian ke-10.
  17. Riyandhani, C., P. 2019. Potensi Batuan Induk Formasi Talangakar dan Lemat Penghasil Hidrokarbon Di Cekungan Sumatra Selatan, Jurnal Penelitian dan Karya Ilmiah, Lembaga Penelitian Universitas Trisakti, 7(2), 164-172.
  18. Hidartan, Syafri, I., Sulaksana, N., & Burhannudinnur. 2014. Basement Distribution Reservoir Oil And Gas In Komering Hulu West Region, of South Sumatra, Seminar Nasional Fakultas Teknik Geologi. Unpad Bandung.
  19. Rachman Malik, R., Bagus Sapto Mulyatno, B., S., Dewanto, O., & Sulistiyono. 2108. Karakter Reservoar Menggunakan Metoda Inversi Ai (Acotic Impedance) Dan Metode Seismik Multiatribut Pada Lapangan RM, Formasi Talang Akar Cekungan Sumatera Selatan, Jurnal Geofisika Eksplorasi, 1(16), ISSN : 2356-1599.

DOI: https://doi.org/10.13057/ijap.v13i1.65447

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