Geologic Time Model
This method uses comprehensive approach which consists of a three-step computer aided workflow. Our algorithm tracks first every possible horizon within the seismic volume and assign relative geological ages automatically. Then the interpreter edits relationships between horizons and update the model in real time to obtain the optimum solution. Based on the horizon grid, a geological time volume is computed from the seismic. PaleoScan™ makes this process fully interactive for the geoscientist, who can refine the interpretation of every horizon and increase iteratively the level of accuracy of the geological model. The interpretation is therefore faster and of better quality. The method can be applied to both 2D and 3D datasets.
Global interpretation in PaleoScan™ consists of a three-step computer aided workflow. During the first step, a grid of horizon patches (the Model Grid) is generated across the entire seismic volume on each polarity (peak, trough, zero crossing, and inflection point). The size of the patches is defined by the interpreter according to the scale of the prospective area and the complexity of the geological settings. In the second step, those patches are linked automatically thanks to a global cost function minimization process based on the distance and the correlation of neighboring patches. A chronostratigraphic sorting is automatically performed to assign relative geological ages to all the horizon patches. During this second phase, the interpreter edits interactively the connections between auto-tracked horizons and updates the model in real time to obtain an optimum solution. In the third and last step, the auto-tracked and refined Model Grid is used to compute the final Relative Geological Time Model (the GeoModel), from which a whole suite of interpretative applications is derived. One of the main applications is the capability to extract an infinite number of iso-age surfaces from the GeoModel through the Horizon Stack, which allows an ultra-fine stratal-slicing of the seismic volume for the detection and characterization of very fine geologic features.