Circulation shaped charge

An apparatus actuatable by a detonator to perforate a tubular wall in a wellbore, comprising:

• a housing;
• a recess-defined by an inner housing surface within said housing, wherein said recess has a closed end and an open end facing the tubular wall;
• a metallic liner positioned within said recess, wherein said liner has a base end facing said recess closed end and has an apex facing the open end of said recess, and wherein said liner defines an interior volume between said base end and said apex and defines an exterior volume between said liner and said inner housing surface;
• and
• an explosive material, within said liner interior volume, which is activatable by the detonator to expand said liner through said exterior volume and against said inner housing surface to generate a peripheral perforating jet which exits said recess open end and perforates the tubular wall.

An apparatus actuatable by a detonator to create a large perforation in a tubular well located in a wellbore, comprising:

• a housing;
• a recess defined by a cylindrical surface within said housing and having a closed end and a circular open end facing the tubular wall;
• a metallic liner positioned within said recess, wherein said liner has a base end facing said recess closed end and has an apex facing the open end of said recess, and wherein said liner defines an interior volume between said base end and said apex and defines an exterior volume between said liner and said cylindrical surface;
• and
• an explosive material, within said liner interior volume, which is activatable by the detonator to expand said liner through said exterior volume and against said housing cylindrical surface to form an annular jet for exiting said circular open end of said recess and for perforating the tubular wall.