Predicting the risks of abnormally high formation pressure during the drilling of new wells is methodologically based on a comprehensive analysis of hydrodynamic reservoir modeling data, interpretation of production/injection logging test and integration of related geological and technological data. This approach is applicable when a large amount of reliable data is available. With low research coverage or its absence in problematic intervals, predicting high pressures in infill drilling zones becomes difficult. To improve the reliability of isobar maps construction for formation pressure determination in well drilling zones, the results of production/injection logging, geophysical, and well-testing (both conventional and «low-cost»), interpreted in the RN-VEGA software, were integrated into a 3D sector filtration model in the RN-KIM software. To assess high pressures in transit formations, additional parameters obtained during well drilling were taken into account, including drilling mud density at the moment of penetrating the interval of interest, direct measurements of excess pressure after perforating unopened intervals prior to well abandonment, and results of modeling of height of self-induced hydraulic fracturing in injection wells (auto-HF) in the RN-SIGMA software. Combining all field data into a single digital system based on the 3D filtration model in RN-KIM enabled to obtain pressure maps of productive and transit formations, which are used for planning infill drilling.
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