Perforating gun

Abstract

The invention relates to the field of oil and gas production. A perforating gun comprises a single-piece housing containing cavities perpendicular to its longitudinal axis, said cavities being formed directly in the material of the housing of the perforating gun. The following individually manufactured, conjoined structural parts of a shaped charge are hermetically installed directly in the cavities: an outer cap of the shaped charge; a hermetic seal in the form of a ring or gasket; a charge cavity; and a primary explosive pellet. Also disposed in the housing are: a detonation transmission amplifier; a sealing ring a detonating cord; and a plug with a groove. A detonating cord is connected to each charge, said detonating cord being disposed in a channel formed along the outer surface of the housing and being balistically connected via an opening to the pellet in the cavity.

What is claimed is: 
     
         1 . A perforator, comprising:
 a monolithic body, said monolithic body forming a perforator body, said perforator body comprising a single solid material;   the perforator body comprising cavities, said cavities being substantially perpendicular to a longitudinal axis of the monolithic body;   charge cartridges, each charge cartridge weighing 23-26 grams, each charge cartridge comprising a pre-manufactured charge material and a recess, each charge cartridge being positioned within and directly contacting a corresponding one of said cavities, each charge cartridge being fixed within the one of said cavities with a sealing gasket and a charge cap, said sealing gasket and said charge cap forming a hermetic seal with said perforator body;   a protective channel positioned along the monolithic body, the protective channel interconnecting the cavities; and   a detonating cord positioned inside the protective channel, the detonating cord being ballistically connected to each one of the charge cartridges,   wherein all of the perforator body consists essentially of one voidless material.   
     
     
         2 . The perforator according to  claim 1 , further comprising:
 a detonation transmission amplifier positioned between a cavity and the protective channel, the detonation transmission amplifier being sealed from outside with a second sealing gasket and a notched sleeve.   
     
     
         3 . The perforator according to  claim 1 , wherein one or more charge cartridges and a surface of a corresponding cavity comprise conical and/or spherical mating surfaces. 
     
     
         4 . The perforator according to  claim 1 , wherein the charge cap rests directly on the monolithic body and the sealing gasket is a flat gasket. 
     
     
         5 . The perforator according to  claim 1 , wherein the charge cap is in resting contact with a surface of a corresponding cavity and wherein the charge cap further comprises radial rings, said radial rings having a circular cross section. 
     
     
         6 . The perforator according to  claim 1 , wherein the monolithic body is cylindrical and comprises metal, ceramic, glass, or polymeric material. 
     
     
         7 . The perforator according to  claim 1 , further comprising at least a second monolithic body comprising a second charge cartridge, all said monolithic bodies being connected in series. 
     
     
         8 . The perforator according to  claim 2 , wherein one or more charge cartridges and a surface of a corresponding cavity comprise conical and/or spherical mating surfaces. 
     
     
         9 . The perforator according to  claim 2 , wherein the charge cap rests directly against the monolithic body material and wherein the sealing gasket is a flat gasket. 
     
     
         10 . The perforator according to  claim 2 , wherein the charge cap is in direct contact with a surface of a corresponding cavity and wherein the charge cap further comprises radial rings, said radial rings having a circular cross section. 
     
     
         11 . The perforator according to  claim 2 , wherein the monolithic body is cylindrical and comprises metal, ceramic, glass, or polymeric material. 
     
     
         12 . The perforator according to  claim 2 , further comprising at least a second monolithic body comprising a second charge cartridge, all said monolithic bodies being connected in series. 
     
     
         13 . The perforator according to  claim 2 , wherein the monolithic body is multi-sided and comprises metal, ceramic, glass, or polymeric material. 
     
     
         14 . The perforator according to  claim 1 , wherein the monolithic body is multi-sided and comprises metal, ceramic, glass, or polymeric material. 
     
     
         15 . The perforator according to  claim 1 , wherein the perforator has an outer diameter of about 70 mm.