Integrated geomechanical framework for wellbore stability management in horizontal drilling
G.V. Jabbarova, A.K. Askerli
https://doi.org/10.65294/gpogc.2026.30
Wellbore instability is a major challenge in horizontal drilling, especially in anisotropic and unconventional formations. Factors such as stress concentrations, pore pressure anomalies, and reactive shales contribute to borehole collapse, stuck pipe, and reduced drilling efficiency. Advanced approaches-integrating Mechanical Earth Models (MEMs), real-time monitoring, and optimized mud weight-are essential for predicting and preventing instability. This paper also considers the impact of well trajectory, drilling fluid selection, and delayed integration of geomechanics into well planning. A case study from the V. Filanovsky field (North Caspian Sea) demonstrates the use of 3D geomechanical modeling for casing design, sidetrack planning, and drilling fluid optimization. Implementation of casing-while-drilling (CWD) significantly reduced open-hole exposure and improved borehole integrity. These strategies support safer, more efficient well construction under complex geological conditions. The integration of data-driven modeling and engineering decisions enhances well longevity, reduces non-productive time, and contributes to more resilient and sustainable drilling operations.