Enhancing transverse fractures while performing hydraulic fracturing within an openhole borehole

A method, comprising:

• emplacing an explosive notching tool into an uncased zone in a formation, wherein the explosive notching tool comprises:
• a metal carrier tool body having at least one cavity formed in and opening to an outer surface defining an outer diameter of the metal carrier tool body, and one or more explosive notching elements mounted in the at least one cavity and disposed proximal to a surface of the formation, wherein each of the explosive notching elements comprises at least an explosive charge extending circumferentially around a center of the at least one cavity and a projectile that overlaps the explosive charge circumferentially around the center of the at least one cavity;
• and
• detonating the explosive charge in the one or more explosive notching elements on the explosive notching tool, wherein detonating radially expands the projectile, and directs the projectile radially outwardly at all angles azimuthally through 360 degrees into the formation and generates one or more circumferential and circular notches in the uncased zone in the formation with the projectile.