Estimation of Petrophysical Properties for the Zubair Reservoir In Abu-Amood Oil Field

Authors

  • Zahraa A. Mahdi Department of Petroleum Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq
  • Ghanim M. Farman Department of Petroleum Engineering, College of Engineering, University of Baghdad, Baghdad, Iraq

DOI:

https://doi.org/10.46717/igj.56.1B.3ms-2023-2-11

Keywords:

Petrophysical evaluation ; Permeability ;Porosity; Shale volume; Water saturation

Abstract

Using IP software to analyze the petrophysical parameters of five wells drilled into the Zubair Formation in the Abu-Amood field in order to evaluate a reservoir and search for hydrocarbon reserve zones . The density-neutron and neutron-sonic cross plots, which appear as lines with porosity scale ticks, are used to distinguish between the three main lithologies of sandstone, limestone, and dolomite. Non-porous to porous rocks are found in the plotted points' locations. Whereas the shales are found at the boundaries, indicating the lithology (and/or mineralogy) of the area. The gamma ray logĀ  was used in all wells to determine the amount of the shale. While using density log at the reservoir unit, sonic log were employed to calculate the porosity at poor hole intervals. Additionally, using the Archie equation and the Indonesia model equation to calculate water saturation ,The Indonesia model gives the best approximation with The Archie equation is useful as it considers both the fluid conductivity and the conductive matrix. Lastly, (FZI) was utilized for permeability evaluation. The outcomes indicate that the Zubair Formation is primarily composed of sandstone mixed with some limestone, which was improved by the cuttings report. The core porosity reading was used to the porosity estimation , and four equations were derived using the core data porosity-permeability relationship created from four hydraulic flow units .

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Published

2023-02-24

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