"Abstract: The seismic interpretation is an art of assuming the real geology at particular depth from theprocessed seismic record. Nowadays, the modern multichannel data have increased both the quantityand quality of interpretable data by experts for best possible and correlated interpretation. But still itrequires the interpreter’s geological understanding to select the best possible interpretation from themany possible interpretations for the given data. The seismic signal contains two fundamental elements which helps the interpreter to study thesection. First, the time of arrival of any reflection from a geological surface as the actual depth from anyinterface is a function of the thickness and velocity of overlying rock layers. Second is the shape of thereflection that includes the signal with its intrinsic frequencies and the behaviour of frequenciesdistribution with each impulse. The interpretation process can be classified into three interrelated categories: 1. Structural, 2. Stratigraphic, and 3. Lithological.Structural seismic interpretation is directed toward the creation of structural maps of the subsurfacefrom the observed three-dimensional configuration of arrival times. Seismic sequence stratigraphicinterpretation relates the pattern of reflections observed to a model of cyclic episodes of deposition. Theaim is to develop a chronostratigraphic framework of cyclic, genetically related strata. Lithologicinterpretation is aimed at determining changes in pore fluid, porosity, fracture intensity, lithology, and soon from seismic data. Direct hydrocarbon indicators (DHI, HCIs, bright spots, or dim-outs) are elementsemployed in this lithologic interpretation process.Seismic Interpretation After processing of seismic reflection data with computers it passes through another phase of seismicprospecting which is called as Interpretation. It is also known as a relationship between reflectinginterface and the record surface. The primary objective of interpretation is to map the geologic horizonsthus the geologic structure. There are four main stages of interpretation:• Structural interpretation• Stratigraphical interpretation• Lithological prediction• Fluid detection or Rock PhysicsStructural analysis involves study of reflector geometry on the basis of reflection events. Stratigraphicanalysis involves the analysis of reflection sequences as the seismic expression of lithologically distinctdepositional sequences. In lithological interpretation we use a model to interpret data. Both structural and stratigraphic analysis are assisted by seismic modelling, in which syntheticseismograms are constructed for layered models to derive the physical significance of reflection eventscontained in the seismic sections. Reflection signatures with terminations:1. Lapout: lateral termination of a reflector at its depositional limit.2. Truncation: reflector cut by any geological feature.3. Baselap: lapout of reflections against any underlying seismic surface.4. Downlap: when underlying surface dip is less than overlying strata.5. Onlap: when underlying surface dip is greater than overlying strata.6. Toplap: termination of inclined reflectors against an overlying lower angle surface.Figure 1: A typical cartoon is shows different Stratigraphical depositionpatterns. "