Jet perforating device for creating a wide diameter perforation
AssigneeHalliburton Energy Services, Inc.
InventorsJerry L. Walker, Jason Paul Metzger, Gerald Graves Craddock, Jr.
Life of this patent
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Abstract
An explosive charge assembly comprises a housing, a liner disposed on a face of an explosive charge, an opening through the liner disposed at the apex, and a lip disposed around the perimeter of the opening. The liner forms an apex and a mouth opposite the apex, and the liner and the explosive charge are disposed in the housing. The explosive charge is disposed between the liner and the housing, and the lip extends from the liner in a direction towards the mouth.
Claims25
An explosive charge assembly comprising:
- a housing;
- an explosive charge disposed in the housing and comprising a face;
- a liner disposed on the face of the explosive charge and in the housing such that the explosive charge is disposed between the liner and the housing, the liner comprising an apex, a mouth opposite the apex, an opening through the liner at the apex having a perimeter, and a lip disposed around the perimeter of the opening, and extending from the liner in a direction towards, and ending before a most forward plane formed by a ring of the mouth;
- and
- wherein propagation of the explosive charge is focused along an explosive focus axis extending from the opening.
A method of perforating comprising:
- detonating an explosive charge assembly, wherein the explosive charge assembly comprises:
- a liner disposed on a face of an explosive charge, wherein the liner comprises an apex, a mouth opposite the apex, an opening through the liner at the apex having a perimeter, and a lip disposed around the perimeter of the opening and extending from the liner in a direction towards, and ending before a most forward plane formed by a ring of the mouth;
- forming a jet focused along an explosive focus axis extending from the opening in response to the detonating, wherein the lip contributes to the formation of the jet;
- engaging a casing with the jet;
- and
- forming a perforation through the casing in response to the engagement with the jet.
A method for making a liner for an explosive charge assembly, the method comprising:
- drawing a material into a concave shape about a central axis of an apex, wherein the apex is centered on the central axis, wherein a mouth is formed at the opposite end from the apex;
- forming an opening through the material at the apex about the central axis;
- and
- forming a lip in the material around a perimeter of the opening, wherein the lip extends from the material in a direction towards, and ending before a most forward plane formed by a ring of the mouth, and wherein propagation of an explosive charge is focused along the central axis.
Dependencies are inferred from the claim text.