Well perforating apparatus and method

Details Well perforating apparatus and method Well perforating apparatus and method

E - Fixed Constructions

21

B

166/13

E21B 43/117 (2006.01)

Patent

CA 1275624

Abstract of the Disclosure 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 irre- ducible 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.

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