Quantitative seismic interpretation
The concept behind SeisRoXTM is that the seismic interpretation should be related to a well-defined geo-model representation i.e. a spatial representation of geophysical and geological properties in a certain volume of the subsurface. This model should contain sufficient information to allow a simulation of the PSDM response of that model, including external constraints such as survey geometry and source signature. This gives the interpreter the possibility to perform the interpretation quantitatively in the context of a geo-model containing physical properties rather than exclusively with observational attributes.
Using this approach, once the physical geo-model has been established within SeisRoX, any model parameter can be interactively perturbed and the effect on the PSDM response seen immediately by the interpreter. This environment makes the understanding of parameter uncertainties and their effects a real possibility, enabling efficient checks of the consequences of different model hypotheses.
Target orientated modelling
An important characteristic of the system is that the PSDM modelling process is designed for local target-orientated analyses. The model based analysis is concentrated within a user defined sub-area. This is the area for which the detailed SeisRoX geo-model is created, containing the structure and available physical properties. The user may define a local target within this area for which the seismic response will be produced.
The background model is completely decoupled from the SeisRoX model. This secondary model accounts for the seismic propagation effects to and from the area of interest and includes the resolution and illumination effects of the survey and overburden.
