Conceptual Geological Modeling

Conceptual geological model is an interpretation of how any given formation was developed, which of its areas will have better and worse properties, where to drill the first wells, where there are still reserves in place, and what sort of features these reserves have. In fact, it is an integrated model that takes into account sedimentology and connects the geology with the development and engineering. This model helps predict reservoir properties more accurately and develop the reserves more efficiently.

Conceptual Geological Modeling

Looking for improvements of conceptual geological modeling processes, Gazprom Neft STC promotes the philosophy of “modeling hierarchy”, when the model’s detail level and maturity change depending on the goals that geologists pursue. This helps better address the issues that may arise in the course of field development phase and make the integrated modeling process faster and cheaper.

Today, STC has over 70 conceptual models covering over 90% of the area of future drilling operations. This approach allows an adequate assessment of the quality of untouchable reserves and use this assessment to determine, on a strategic basis, which of the reserves need to be worked on right now and which can be developed later, what kind of wells to drill and where to place these wells. Looking at these concepts, one can see how the effect of drilling and production volumes will change in time.

Such in-place reserves quality maps are also used for development of hard-to-recover reserves and for ranging the most promising blocks.