<p>The development of the Ordovician carbonate karst reservoir in the Tahe Oilfield is intricately linked to paleogeomorphology and the evolution of faults. Clarifying the genetic relationship between faults and karst paleogeomorphology is crucial for understanding reservoir distribution as well as for exploration and development efforts. Using high-precision 3D seismic data for the T₇⁴ unconformity in the Tahe main area, this analysis includes detailed geomorphology characterization, fault interpretation through the extraction of seismic attributes, and a description of karst reservoirs based on impedance inversion data. The local geomorphological units, including valleys and dissolution peaks, exhibit a strong correlation with particular faults. The dynamics of thrust faults and NNE strike-slip faults within the study area influence the watershed and geomorphological zoning, directing the flow patterns and distribution of karst water systems. Minor faults and localized fault combinations exert a more significant influence on the formation of local landforms. In the karst period, local faults and fractures resulting from extension are likely to exhibit negative geomorphology under northwest compressive stress. This condition enhances the water conductivity of paleogeomorphology, facilitating karstification and the development of fracture and vug reservoirs. Precise fault interpretation and kinematic dynamic analysis are essential for investigating the genetic mechanisms of karst fractures and cave reservoirs, providing valuable insights for predicting advantageous karst reservoir spaces.</p>