Energetic material applications in shaped charges for perforation operations

摘要

A shaped charge includes a cup-shaped casing defining an interior volume; a liner located within the interior volume; an explosive disposed between the liner and the casing; and a reactive material disposed between the liner and the casing. A method for generating a dynamic overbalance inside a wellbore includes disposing a perforation gun in the wellbore; and detonating a shaped charge in the perforation gun, wherein the shaped charge includes a cup-shaped casing defining an interior volume, a liner located within the interior volume, an explosive disposed between the liner and the casing, and a reactive material disposed between the liner and the casing.

主权项

1. A method comprising:
disposing a perforation gun in a wellbore; and detonating a shaped charge in the perforation gun with a main explosive thereof that is disposed between a liner and a casing of the charge; exposing reactive material of a separately packed wave shaper to the wellbore, the wave shaper located within the casing and between and interfacing each of a primer and the main explosive prior to said detonating, the reactive material selected from a group consisting of a metal and a metalloid with an oxidizing agent; permitting the exposed reactive material to undergo a heat generating reaction upon said exposure; allowing the heat generating reaction to increase pressure in the wellbore for a dynamic overbalance condition thereat; and forming a perforation from the detonating of the main explosive, the perforation of enhanced character into a formation adjacent the wellbore during the overbalance condition.