| Summary: Some scientists considered densities as the variable in each formation. In other words, density is defined as a function of the required parameters. Of course, this kind of model calculations made by accepting densities as variable gives quite reliable results. In this study, it is aimed to take into account the density as variable by using the limit of detected seismic velocity for each formation. The path followed by the boundaries of seismic velocity is an indicator of the density change. In addition to main formations in model geometry in 3D inversion calculations, another formation was defined. This additional description of formation was made by using continuously all available boundaries of seismic velocities in each formation. Calculated density for this additional formation is considered as the amount of density change in seismic velocity. Change of the density with depth was determined in detail by adding this change into the densities calculated for main formations.
Beginning of the study, the densities are taken into account as fixed. But, densities in layers are calculated as a variable. Three different models are used in this study. In the end of the first two model working, how the changes of density with depth are determined with seismic velocities are considered as an extra mass. The final study, low-speed underground model formed that a part of seismic data was taken from TPAO that refer to Adıyaman, Diyarbakır and Gaziantep region. In the end of this study, the density changing is determined with depth by the acquisition of seismic velocity boundaries as an extra mass. In the hydrocarbon exploration, it is reached the conclusion by opening few wells by using this method.
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