The zoning and characterisation of heterogeneous carbonate reservoirs based on the concept of flow units

Abstract

Petrophysical evaluation of a formation using petrophysical logs and core data plays an important role in determining the quality of the formation and the quantitative and qualitative characteristics of the reservoir. By zoning the reservoir layers, the focus is more effectively on areas with higher potential for hydrocarbon production. This research was conducted to interpret petrophysical data to identify reservoir zoning in one of Iran's oil reservoirs. The petrophysical core data and well logging charts were integrated and adapted for the reservoir zone. For the vertical samples, four flow units were identified and the formation was divided into four reservoir zones, with most of the samples taken from the second and third zones. Six hydraulic flow units were identified for horizontal samples. In the second and third zones, the samples were closely spaced and had the petrophysical properties that are similar, but superior, to those of the other zones.

Estimation of the Petrophysical Properties of the Lower Cretaceous Yamama (YC) Formation in Siba Field

“…In particular, identifying the hydrocarbon-and nonhydrocarbon-bearing zones requires petrophysical analysis, which is crucial for reservoir characterization [1][2][3][4][5][6]. The petrophysics of any field encompasses the reservoir fluid parameters and reservoir rock qualities that can influence recovery and production levels [7][8][9].…”