Charge case fragmentation control for gun survival

A method for forming a perforation comprising the steps of:

• positioning a perforating gun comprising a gun body and a charge carrier at a desired location in the formation;
• disposing one or more shaped charges within the charge carrier, wherein the one or more shaped charges comprise:
• an outer case;
• an inner liner;
• and
• an explosive material retained between the outer case and the inner liner, wherein the outer case comprises one or more predefined fracture lines;
• detonating at least one shaped charge, wherein detonating the at least one shaped charge forms one or more perforations in the formation.

A method for forming a perforation comprising the steps of:

• positioning a perforating gun comprising a gun body and a charge carrier at a desired location in the formation;
• disposing one or more shaped charges within the charge carrier, wherein the one or more shaped charges comprise:
• an outer case;
• an inner liner;
• an explosive material retained between the outer case and the inner liner, wherein the outer case comprises one or more predefined fracture lines;
• and
• an explosive load;
• detonating at least one shaped charge, wherein detonating the at least one shaped charge forms one or more perforations in the formation, one or more predefined fragments, and one or more exit holes in the gun body;
• and
• selecting a material composition of the outer case, an orientation of the predefined fracture lines, and a size of the predefined fragments based on the explosive load of the shaped charge and a size of the exit holes in the gun body.