Reservoir Characterization Using Post Stack Seismic Inversion on The Upper Sihapas Formation, Malacca Strait, Central Sumatra Basin

Authors

  • Candra Teja Kusuma Master of Physics Science Program, Faculty of Mathematics and Natural Sciences, University of Indonesia
  • Md. Shofiqul Islam Department of Petroleum and Mining Engineering, Shahjalal University of Science and Technology, Sylhet, Bangladesh
  • Sadiq Jalal Department of Earth Sciences, Quaid-i-Azam University, Islamabad, Pakistan
  • Thais de Souza Kazmierczak Federal University of Rio Grande do Sul, Brazil
  • Luis Antonio Castillo-López Department of Geosciences, Federal University of Amazonas, Manaus, Brazil

DOI:

https://doi.org/10.59535/faase.v2i2.342

Keywords:

Acoustic Impedance, Seismic Inversion, Deltaic Environment

Abstract

Post-stack seismic inversion is often conducted to quantitatively determine the characteristics of reservoirs using post-stack seismic data, with the output being acoustic impedance. Rock characteristics such as porosity, lithology, and fluids can be represented by impedance values, making the distribution of impedance the focus of this study in determining potential areas of interest. The research area is located in the Malacca Strait Block, Central Sumatra Basin, with the reservoir in the Upper Sihapas Formation. This study uses post-stack seismic inversion with acoustic impedance values ​​as the output. With a crossplot of acoustic impedance vs. porosity and the color from the gamma ray log, sand and shale lithologies can be separated. The crossplot also produces a simple linear equation to convert acoustic impedance values ​​to porosity values. The reservoir zone has acoustic impedance values ranging from 13,000 (ft/s)*(g/cc) to 16,500 (ft/s)*(g/cc), which are converted into porosity values ranging from 9% to 40% . Point bars, crevasse splays, and restricted brackish bays are areas with good reservoir quality, as indicated by low acoustic impedance values.

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Published

2024-12-07

How to Cite

Candra Teja Kusuma, Md. Shofiqul Islam, Sadiq Jalal, Thais de Souza Kazmierczak, & Luis Antonio Castillo-López. (2024). Reservoir Characterization Using Post Stack Seismic Inversion on The Upper Sihapas Formation, Malacca Strait, Central Sumatra Basin. Frontier Advances in Applied Science and Engineering, 2(2), 109–119. https://doi.org/10.59535/faase.v2i2.342

Issue

Vol. 2 No. 2 (2024)

Section

Original Articles

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Copyright (c) 2024 Candra Teja Kusuma, Md. Shofiqul Islam, Sadiq Jalal, Thais de Souza Kazmierczak, Luis Antonio Castillo-López

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