Decoding Complexities: Seismic, Geological, and Dynamic Modeling of Fault and Reef Influence on Bubble Point Variations

Intricate subsurface features, such as faults, salt domes, and reefs, pose significant challenges to seismic survey design owing to their complex wave field behavior. Identifying faults is critical in the petroleum industry because these discontinuities can act as hydrocarbon traps that influence the potential of the reservoir. The investigation centers on a critical issue regarding the discrepancy in bubble pressure values observed within the Mishrif formation, which serves as the primary reservoir within the Garraf oil field. The ultimate goal is to ascertain the presence and influence of faults or reefs contributing to this disparity. In pursuit of this objective, two distinct scenarios were constructed: one integrating the reef and the other involving faults. The correct scenario is validated through a meticulous historical matching analysis. The study proved the presence of faults in the reservoir layers, as they acted as compartments that changed the bubble point value. This investigation not only directly addresses the observed bubble point discrepancy, but also highlights the potential influence of faults or reefs as major factors in reservoir characterization within complex geological environments and could significantly enhance regional exploration.