High density perforating gun system producing reduced debris
First Claim
1. An apparatus for perforating a subterranean formation comprising:
- a perforation module conveyable into a wellbore drilled into the subterranean formation, the module including at least;
(a) a body of explosive material;
(b) a detonator for detonating the body of explosive material; and
(c) a liner surrounding at least a portion of the explosive material, the liner forming a plurality of perforating elements when the body of explosive material is detonated.
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Accused Products
Abstract
A perforating system has a perforating module comprising a unitary body of explosive. The explosive is contained within a non-explosive casing, or liner, having formed indentations and a cover thereover. The indentations, which will transform into explosively formed penetrators (EFP'"'"'s) upon detonation, have a perimeter shape that allows for improved packing density, e.g., a hexagonal perimeter, which results in relatively little “dead space” wherein no perforating penetrators are generated. In operation, the module provides a relatively dense shot pattern and substantially reduced amount of post-detonation debris that could clog the perforations and/or require remedial clean-up or repeat perforation.
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Citations
17 Claims
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1. An apparatus for perforating a subterranean formation comprising:
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a perforation module conveyable into a wellbore drilled into the subterranean formation, the module including at least;
(a) a body of explosive material;
(b) a detonator for detonating the body of explosive material; and
(c) a liner surrounding at least a portion of the explosive material, the liner forming a plurality of perforating elements when the body of explosive material is detonated. - View Dependent Claims (3, 4, 5, 6)
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2. The apparatus of claim 2, wherein the liner forms perforating elements that travel in a direction substantially perpendicular to a longitudinal axis of a wellbore.
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7. An apparatus for use in perforating a subterranean formation, comprising:
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a perforation module comprising a body of high explosive material; and
a liner surrounding the body of high explosive material, the liner presenting a radially outer surface having a plurality of indentations formed therein to be transformed into directional penetrators upon detonation of the body of high explosive material. - View Dependent Claims (8, 9, 10, 11)
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12. A method of perforating a subterranean formation comprising:
perforating a formation intersected by a wellbore with a plurality of penetrators formed from one liner. - View Dependent Claims (13, 14, 15, 16, 17)
Specification