How often are taken into account the above-stated facts ?
Take as an example producing formation at a depth 3000 ft. Hydrostatic pressure 1350 psi, layer pressure 1620 psi, rock pressure 3350 psi, compressive stress conditions around the drilled hole (according to the laws of Geomechanics) almost twice as much rock pressure 5370 psi.
After cutting longitudinal slots along the borehole, load in the cutting slot's zones decreases. Theoretically stresses aspire to balance the pressure with the pressures of the producing formation. Compressive stresses redistributed to the ends of the slots, respectively unloading near wellbore zone. Respectively happening an increase the permeability/porosity, and accordingly increase productive inflows in the unloading area. As can be seen from the above table, when creating a lateral extension slots along the wellbore at a depth 3000 ft. compressive stress conditions decreases (unloading) form 5370 psi (rock pressure) to 1950-2100 psi (at effective pressure in the productive layer 1620 psi).