PEMODELAN PROPERTI ELASTIK DAN ANISOTROPI PADA BATUSERPIH ORGANIK IMMATURE

Authors

  • Sthevanie Dhita Sudrazat Teknik Geofisika, Fakultas Teknologi Eksplorasi dan Produksi, Universitas Pertamina, Indonesia
  • Ida Herawati Teknik Geofisika, Fakultas Teknologi Eksplorasi dan Produksi, Universitas Pertamina, Indonesia

DOI:

https://doi.org/10.23960/jge.v8i1.164

Keywords:

Anisotropy, Kerogen, Organic shale, Rock physics modeling

Abstract

Batuserpih organik merupakan salah satu reservoar non konvensional yang memiliki heterogenitas dan struktur yang kompleks. Pemodelan fisika batuan pada batu serpih organik penting dilakukan untuk mengetahui karakteristik dari reservoar tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh kerogen dan mineral terhadap properti fisis dan sifat anisotropi dari batuserpih organik. Pemodelan dilakukan dengan menggunakan: teori efektif medium Kuster Toksöz untuk menggabungkan fluida dan solid pada masing-masing matriks, Self-Consistent Approximation (SCA) untuk mengetahui properti fisis dari keseluruhan batuserpih, serta Backus Average untuk menentukan parameter anisotropi dari batuserpih organik. Penelitian ini melakukan perhitungan rasio Vp/Vs, impedansi akustik, dan parameter anisotropi untuk tingkat kematangan immature dengan variasi mineral lempung serta jumlah material organik. Hasil penelitian menunjukkan bahwa rasio Vp/Vs, impedansi akustik dan parameter anisotropi batuserpih sangat sensitif terhadap kandungan material organik dan variasi mineralogi. Kesimpulan dari penelitian ini bahwa peningkatan kandungan material organik menurunkan rasio Vp/Vs dan impedansi akustik batuan, namun meningkatkan sifat anisotropi. Sementara itu, peningkatan kandungan mineral lempung meningkatkan rasio Vp/Vs namun menurunkan impedansi akustik, serta meningkatkan nilai parameter anisotropi.

References

Ahmad, M., Iqbal, O., & Kadir, A. A. (2017). Quantification of Organic Richness Through Wireline Logs: A Case Study of Roseneath Shale Formation, Cooper Basin, Australia. IOP Conference Series: Earth and Environmental Science 88 012020.

Berryman, J. G. (1995). Mixture Theories for Rock Properties. Rock Physics and Phase Relations, 3.

Bjørlykke, K. . (2015). Petroleum Geoscience: From Sedimentary Environments to Rock Physics (2nd ed). Springer Berlin Heidelberg.

Ciz, R. ., & Shapiro., S. (2007). Generalization of Gassmann equations for porous media saturated with a solid material. Geophysics, 72(6), A75–A79.

Guo, Z., Li, X. Y., Liu, C., Feng, X., & Shen, Y. (2013). A Shale Rock Physics Model for Analysis of Brittleness Index, Mineralogy and Porosity in The Barnett Shale. Journal Geophysics and Engineering, 10(2).

Herawati, I., Winardhi, S., & Priyono, A. (2015). Estimation of Anisotropy Parameters in Organic-Rich Shale: Rock Physics Forward Modeling Approach. AIP Conference Proceedings 1677, 060011.

Kuster, G., & Toksöz, M. (1974). Velocity and attenuation of seismic waves in two-phase media: Part I – Theoretical formulations. Geophysics, 39, 587–606.

Lee, M. W. (2005). Proposed moduli of dry rock and their application to predicting elastic velocities of sandstones: Scientific Investigations Report.

Li, Y., Guo, Z. Q., Li, X. Y., & Wang, G. (2015). A Rock Physics Model for the Characterization of Organic-rich Shale from Elastic Properties. Petroleum Science, 12(2).

Lucier, A. M., Hoffman, R., & Bryndzia, L. T. (2011). Evaluation of variable gas saturation on acoustic log data from the Haynesville Shale gas play, NW Louisiana, USA. The Leading Edge, 30(3), 241–368.

Mavko, G., Mukerji, T., & Dvorkin, J. (2009). The Rock Physics Handbook: Tools for Seismic Analysis of Porous Media (2nd ed.). Cambridge University Press.

Okeke, O., & Okogbue, C. (2011). Shales: A Review of Their Classifications, Properties and Importance to The Petroleum Industry. Global Journal of Geological Sciences, 9(1), 55–73.

Pertamina. (2013). Energia. Corporate Communication Sekretaris Perseroan PT PERTAMINA (PERSERO).

Thomsen, L. (1986). Weak Elastic Anisotropy. Geophysics, 31(10), 1954–1966.

Wang, B., Chen, Y., Lu, J., & Jin, W. (2018). A rock physics modelling algorithm for simulating the elastic parameters of shale using well logging data. Science Report 8 (12151).

Yan, F., & Han, D. (2013). Measurement of Elastic Properties of Kerogen. SEG Technical Program Expanded Abstracts 2013, 2778–2782.

Zhang, F., Li, X., & Qian, K. (2017). Estimation of anisotropy parameters for shale based on an improved rock physics model, Part 1: Theory. Journal of Geophysics and Engineering, 14(1), 143–158.

Zhao, L., Qin, X., Han, D. H., Geng, J., Yang, Z., & Cao, H. (2016). Rock-physics Modeling for the Elastic Properties of Organic Shale at Different Maturity Stages. Geophysics, 81(5), D527–D541.

Zhu, Y., Liu, E., Martinez, A., Payne, M. A., & Harris, C. E. (2011). Understanding Geophysical Responses of Shale-gas Plays. The Leading Edge, 30(3), 332–338.

Zhu, Y., Xu, S., Payne, M., Martinez, A., Liu, E., Harris, C., & Bandyopadhyay, K. (2012). Improved Rock-Physics Model for Shale Gas Reservoirs. SEG Technical Program Expanded Abstracts, 1–5.

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Published

2022-03-30

How to Cite

Sudrazat, S. D., & Herawati, I. (2022). PEMODELAN PROPERTI ELASTIK DAN ANISOTROPI PADA BATUSERPIH ORGANIK IMMATURE. JGE (Jurnal Geofisika Eksplorasi), 8(1), 5–16. https://doi.org/10.23960/jge.v8i1.164

Issue

Vol. 8 No. 1 (2022)

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