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Numerical Modeling of Wellbore Instability (SHEAR Failure) using Fracture Mechanics Approach
Wellbore instabilities are responsible for 10-20% of the total drilling cost. It has been estimated that wellbore instability causes an annual economic loss of US$ 500 - 1000 million in the oil industry across the world. ...
Numerical Modeling of Wellbore Instability (TENSILE Failure) Using Fracture Mechanics Approach
When a well is drilled, the equilibrium in-situ stress is changed. In order to support the stress relief induced by the drilling and to prevent hydrocarbon influx into the cavity, the borehole is filled with a fluid. These ...