Testing the Theory of Forecasting Development Indicators when Designing Wells in Carbonate Deposits

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Abstract

At the current stage of 3D modeling technology development, the challenge of constructing detailed full-scale models of carbonate reservoirs, as well as the development of residual reserves by drilling the planned well stock, remains relevant. The main challenges stem from the need to accurately reproduce the geological environment, including accounting for fracturing and faults of various origins, as well as modeling the dual porosity and permeability system associated with spatial heterogeneity in fracture distribution both laterally and vertically. Additional complications arise when designing well trajectories, particularly when optimizing the placement of horizontal sections. Current computing power does not allow for the full reconstruction of complex fracture systems when constructing detailed geological and hydrodynamic models. Studies demonstrate that analyzing the influence of individual factors or limited groups of factors is not methodologically sound. Even with high-quality data from well testing, seismic surveys, and extensive well logging systems, establishing reliable correlations is not possible. Improving field development efficiency, particularly reducing water cut and reserve depletion, requires the implementation of an integrated approach to managing the operation of individual blocks. This approach should integrate: well placement optimization, well completion and stimulation methods, well production and reservoir pressure maintenance regimes, formation stimulation technologies, well intervention methods and frequency, selection of optimal production technologies. Overall development efficiency depends on each component of the system; poor efficiency of individual operations reduces the final result without being offset by the advantages of other elements.

Keywords

fracturingcarbonate depositsreservoirfiltration-capacitive properties of the matrixBashkirian and Serpukhovian stagesoil flow ratedestruction zoneswater cut3D geological modelhorizontal wellsinvestment program

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Article information

Published
21 November 2025
Issue date
21 November 2025
Issue
Vol. 25, No. 4 (2025)
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