Prioul, RomainKarpfinger, FlorianWaters, GeorgesLecampion, Brice2017-03-092017-03-092017-03-092013https://infoscience.epfl.ch/handle/20.500.14299/135153The subject disclosure relates to determining an optimum orientation for perforations around the circumference of a subsurface borehole and optimum wellbore fluid initiation pressure for hydraulic fracturing in anisotropic formations.hydraulic fracturepatentUS2017145818US9376902US201320647548944682