Prognostic specific features of the use of apriori model conditions in the framework of the geomapping variational-grid method
The paper considers the prognostic specific features of application of two standard a priori model conditions of the variational-grid method of geo-mapping, namely, the minimum of the curvature and the minimum of the surface as well as their combined on the example of structural plan mapping of one of the geological objects of the Western-Siberian oil- and gas-bearing basin characterized by a large volume of real data. It is established that the predicted errors variations of the results of the constructions for the conditions under consideration are generally identical. At the same time, the optimal results in terms of the prediction are provided by different model conditions, depending on the details of the mapping. Preliminary construction of the trend component using some model conditions and subsequent detailing with the use of other conditions do not allow achieving an unambiguous increase of the prediction accuracy. The low accuracy of the maps constructed with the use of a priori conditions prove the necessity to develop some specialized methods of looking for optimal model conditions for the variational-grid geo-mapping method.