Integrating Geological Data for Enhanced Understanding of Carbonate Heterogeneous Reservoirs

This study presents a comprehensive geological modeling approach to understanding the Hartha Formation in the Balad Oilfield. Utilizing Petrel software, a 3D geological model was developed, integrating well data, seismic contour map, and log analyses to delineate the reservoir’s structural and petrophysical properties. Data preparation involved organizing well headers, tops, and logs from five key wells, followed by the creation of a structural contour map that identified major and minor faults influencing the reservoir. Structural modeling further enhanced the understanding of the Hartha Formation’s geometry, illustrating how tectonic influences and faulting impacted the spatial distribution of reservoir units. Facies modeling identified a predominance of mudstone and wackestone in the upper Hartha Formation, with improved reservoir qualities in the Har.UA and Har.UB units. Petrophysical modeling demonstrated variations in porosity and water saturation, highlighting the impact of structural features on fluid distribution. The findings underscore the complex geological interplay within the Hartha Formation, providing critical insights for future exploration and optimized hydrocarbon recovery strategies.