Presenter: Alireza Agharazi, Geomechanics Engineer
Date: August 18, 2015
Title: Geomechanics of Refracturing: An Engineering Approach
Description: As discussed in Part 1 of this webcast series, microseismic observations and geomechanical analysis of refracturing indicate that diverters are not effective in regulating the flow along lateral during the treatment.
Ineffective diverters and the pressure drop along the lateral, results in localized stimulation of reservoir at the heel area, leaving a major part of the well un-stimulated.
In part 2, we introduce an alternative method to address ineffective diverters and to improve the effectiveness of refracturing. This methodology is based on the stimulation of naturally fractured reservoirs by a pore pressure-driven mechanism. Proper handling of injection pressure and flow rates is a key factor in this methodology. Numerical simulations indicate the effectiveness of the method in creating a uniformly stimulated rock volume along the lateral.