<p>Carbonate Flank Deposits (CFD) have gained recognition as an emerging hydrocarbon play within the established petroleum systems of Central Luconia, Sarawak. The presence of hydrocarbons within these deposits has been confirmed through production in one of the existing fields. However, CFD characterization in the other fields remains challenging due to the limited availability of well data, resulting in significant uncertainties regarding reservoir potential. This study addresses these challenges by employing advanced geophysical techniques to characterize the CFD, also referred to as talus, wings, or stringers, within the Central Luconia region. By integrating seismic analysis with geological interpretations, this research aims to improve reservoir predictions and reduce subsurface uncertainties. The primary objective is to assess CFD reservoir quality relative to the well-established carbonate main build-up (core reef). Case studies from the E11, B11, and Kenari fields underscore the crucial role of seismic techniques in evaluating CFD viability. The seismic characterization framework of this study consists of three key stages: (1) identification of CFD through seismic reflectivity and structural mapping, utilizing seismic attribute extractions for volumetric assessment; (2) evaluation of geological properties by integrating well-log data to analyze lithological variations, structural complexities, and reservoir quality; and (3) seismic-geological integration, which refines the geological model by correlating seismic data, well logs, and regional geological knowledge. Findings indicate that the CFD in the E11 field exhibits reservoir continuity with the main build-up, as evidenced by consistent pressure trends and similar log responses. Spectral decomposition and multi-attribute analyses further reveal that the CFD shares comparable seismic characteristics with the main reef but demonstrates distinct facies variations. In the B11 and Kenari fields, seismic inversion and impedance mapping suggest that the CFD may have lower reservoir quality due to its depositional nature, particularly in closed-wing structures. However, geobody extraction highlights potential hydrocarbon-bearing zones, underscoring the importance of seismic-driven reservoir modeling in areas with limited well penetration. This study provides critical insights into the untapped hydrocarbon resources within the CFD, contributing to more accurate reservoir models and optimized field development strategies. By leveraging seismic reservoir characterization, this research advances the understanding of carbonate flank deposits and their potential role in future energy exploration and production.</p>