Geological modeling of facial conditions of sedimentation

Svyatoslav I. Bilibin Central Geophysical Expedition JSC Moscow, Russian Federation sibilibin@cge.ru
Nadezhda F. Velichkina Central Geophysical Expedition JSC Moscow, Russian Federation nfvelichkina@cge.ru
Andrey V. Vovk Central Geophysical Expedition JSC Moscow, Russian Federation avvovk@cge.ru
Three-dimensional geological modeling of facial conditions of sedimentation makes the transition from a qualitative level of knowledge about the field, conditions of deposition to the quantitative assessment of field parameters. This technology of geological modelingallows to consider fully all initial information: conditions of formation of deposits, these studies core, 3D seismic survey, processing, GIS, test data and hydrodynamic researches of wells, geological and statistical information on specific facies conditions of sedimentation
Сonclusions
Geological modeling technology is implemented, which allows to consider fully all the background information: Conditions deposits, core analysis data, seismic 3D, GIS processing, test data and well testing, geological andstatistical information on specific depositional facies conditions. Built model - namely,cubes and maps of the effective thickness, porosity, permeability and hydrocarbon saturation - are fully consistent with the facies maps of the studied objects.In this simulation technology changed from a high-quality level of knowledge about the field, the conditions of formation of deposits to quantify the simulation parameters. According to the results of the study fields with known depositional environments must create an electronic database for the quantitative descriptionof the various facial conditions. Without this, the transition to the implementation of certain quantitative facies conditions is almost impossible. This method allows you to create a three-dimensional modeling of the geological model, in which the volume of the reservoir is not fundamentally different from the model constructedby the standard. However, the collector is distributed in three-dimensional volume of the formation in accordance with the conditions of sedimentation and linked to the geological laws, and not to the selected interpolation method. Approach to the construction of the geological model with a quantitative view of the depositional environment can increase the probability of an adequate distribution of hydrocarbon reserves in the amount of the deposit. This, in turn, should accelerate and improve the accuracy of the adaptation of the hydrodynamic model for creating high-quality forecast for the field development.
Download article
geological modeling facial analysis conditions of sedimentation lithotypes porosity oil&gas saturation the o