Faults are considered as one of the influential factors in hydrocarbon reservoirs. The existence of a fault in a reservoir can create structural traps, increase permeability and create migration paths. On the other hand, the possibility of hydrocarbon leakage, the risk of well instability, the complexity of drilling operations, and the unbalanced distribution of hydrocarbon between the traps of a reservoir are among the negative effects of fault in hydrocarbon reservoirs. Therefore, identifying faults and their effects will play a key role in the process of exploration and production from hydrocarbon reservoirs. The use of seismic attributes to improve, identify and analyze hidden information in seismic sections, as well as better geological and geophysical interpretation, is one of the main steps of a correct and accurate seismic interpretation. Therefore, choosing a suitable attribute to reveal the fault and its behavior will be obvious. In this paper, by using some seismic data and application of different seismic attributes, the strengths of PaleoScan software in detecting the fault structures by automatic and semi-automatic methods have been practically investigated. Considering the variety of seismic attributes of this software compared to similar software, it can be used as a powerful tool in identifying structural discontinuities and especially oil field faults.