CHARACTERIZATION OF HYDROCARBON RESERVOIR USING SWEETNESS ATTRIBUTE AND ACOUSTIC IMPEDANCE INVERSION IN NORTH BALI WATERS

  • Aulia Ranggi Pamalik Program Studi Teknologi Kelautan, Sekolah Pascasarjana, IPB University, Bogor
  • Henry M. Manik Departemen Ilmu dan Teknologi Kelautan, FPIK-IPB University, Bogor
  • Susilohadi Pusat Penelitian dan Pengembangan Geologi Kelautan, Bandung
Keywords: carbonate, hydrocarbon, reservoir characterization, seismic attribute, seismic inversion

Abstract

Reservoir is an object that be focus at exploration stage of the oil and gas industry. The process of identifying and depicting reservoir characters both qualitatively and quantitatively is carried out using well and seismic data because these two data are complementary. The aim of this study is to identify and analyze the character of hydrocarbon reservoir in North Bali Waters using sweetness attribute method and model-based acoustic impedance inversion method. This study uses four 2D post-stack time migration seismic and a well (BLJ-1) data. The sweetness attribute method is carried out by extracting basic information derivatives from seismic data (amplitude and frequency), while the model-based acoustic impedance inversion method is carried out by integrating seismic and well data in order to obtain the lateral distribution of acoustic impedance values. The results showed that sweet-ness attribute can identify the hydrocarbon reservoir zone from sweet spots anomaly at time window 750-850 ms. The main reservoir zone is composed by carbonate rocks (limestone) aged Late Pliocene and located at 680-740 m depth. Model-based inversion method is able to provide high correlation values and low inversion errors, so it can determines the rock layers that predicted with gas-contain. The use of sweetness attribute and model-based inversion method can identify and describe reservoir characters well.

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Published
2020-12-31
How to Cite
PamalikA. R., ManikH. M., & Susilohadi. (2020). CHARACTERIZATION OF HYDROCARBON RESERVOIR USING SWEETNESS ATTRIBUTE AND ACOUSTIC IMPEDANCE INVERSION IN NORTH BALI WATERS. Jurnal Ilmu Dan Teknologi Kelautan Tropis, 12(3), 697-710. https://doi.org/10.29244/jitkt.v12i3.32640