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Near Wellbore Geomechanics
Near-wellbore geomechanical modelling for advanced well integrity analyses
Well integrity analysis within full-field simulations
The Near Wellbore Geomechanics plugin allows the Petrel user to build, solve and post-process cylindrical numerical models for the near-well region to analyse well integrity. Open-hole and cased-hole conditions including multiple casings, liner and cement can be considered. Results are imported into Petrel offering an analysis of long-term well integrity in context with the reservoir simulation.
Comprehensive geomechanical simulation results
The results of the VISAGE simulation of the near-wellbore model include the effective and total stresses, and elastic and plastic strains as tensor, principals and well-centric output (hoop, radial, axial). The results further include XYZ and well-centric displacements, failure values and modes, as well as the von-Mises yield stress and equivalent strain.
Depth of Damage Assessment
High resolution near-wellbore models can be used to compute the depth of damage of the near-well rock formation. This capability can be used for calibration purposes as well as subsequent prediction and differentiates these numerical well integrity analyses from analytical wellbore stability approaches.
Casing integrity analysis during field development
Including casing, liner and cement in a near-wellbore geomechanical model allows the user to compute the impact of field production and injection plans, and corresponding geomechanical reactions such as significant compaction, on casing integrity. This enables the user to optimize well trajectory and completion planning.
Enhanced post-processing capabilities
Results of the Near Wellbore Geomechanics plugin can be visualized in 3D in context with the geological model and reservoir simulations in Petrel. In addition, results can be plotted along the circumference at a given distance from the borehole and in radial profiles. The plotted data can also be exported to ASCII files for further manual processing.