US 10,209,040 B2 · Shaped charge having a radial momentum balanced liner

Abstract

A disclosed example embodiment includes a shaped charge for use in a well perforating system. The shaped charge includes a housing having a discharge end and an initiation end. A liner is positioned with the housing. A main explosive is positioned within the housing between the liner and the initiation end of the housing. The liner has a radially outwardly disposed concave section having a progressively decreasing wall thickness in the direction from the initiation end to the discharge end of the housing and a radially inwardly disposed convex section having a progressively increasing wall thickness in the direction from the initiation end to the discharge end of the housing such that the liner is radial momentum balanced and operable to form a coherent jet having a hollow leading edge following detonation of the shaped charge.

Claims9

Dependent claims

A shaped charge comprising:

a housing having a discharge end and an initiation end;
a liner positioned with the housing, wherein, the liner has a radially outwardly disposed concave section having a progressively decreasing wall thickness in the direction from the initiation end to the discharge end and a radially inwardly disposed convex section having a progressively increasing wall thickness in the direction from the initiation end to the discharge end;
a main explosive positioned within the housing between the liner and the initiation end of the housing;
and
an annular source initiator operably associated with the main explosive configured to generate an annular detonation wave in the shaped charge.

2 more elements

Dependencies are inferred from the claim text.

Shaped charge having a radial momentum balanced liner

Life of this patent

Shaped charge having a radial momentum balanced liner

Life of this patent

Abstract

Claims9