초록 ▼

A perforating gun is designed to have explosive charges spirally disposed around its circumference in accordance with a displacement angle defined as (m/p) (360°), where p is a whole number greater than 4 and m is a whole number greater than 1 but less than (p-1) and where m/p is an irreducible frac

A perforating gun is designed to have explosive charges spirally disposed around its circumference in accordance with a displacement angle defined as (m/p) (360°), where p is a whole number greater than 4 and m is a whole number greater than 1 but less than (p-1) and where m/p is an irreducible fraction. A U, or horseshoe, shaped retainer clip holds individual charges in respective holes and cavities of an outer carrier tube and an inner carrier tube to prevent horizontal or transverse movement of each charge and thereby hold it in contact with an axially extending detonator cord.

대표청구항 ▼

An article for holding an explosive charge, having an outer edge, in a perforating gun having a wall with an outer surface, an inner surface and a transverse surface extending between the outer and inner surfaces to define an opening through the wall, said article comprising: first retainer means fo

An article for holding an explosive charge, having an outer edge, in a perforating gun having a wall with an outer surface, an inner surface and a transverse surface extending between the outer and inner surfaces to define an opening through the wall, said article comprising: first retainer means for engaging the outer edge of the explosive charge and the inner surface of the wall when said article holds the explosive charge within the opening in the wall; second retainer means for engaging the outer edge of the explosive charge and the inner surface of the wall when said article holds the explosive charge within the opening in the wall; third retainer means for engaging the outer edge of the explosive charge adjacent the outer surface of the wall when said article holds the explosive charge within the opening in the wall; first connector means, extending through the opening in the wall, for connecting said first retainer means and said third retainer means; and second connector means, extending through the opening in the wall, for connecting said second retainer means and said third retainer means.