Abstract 1. A perforating gun which comprises: A. A GUN BARREL PROVIDED WITH A PLURALITY OF SETS OF EXPLOSION PORTS IN THE WALL THEREOF, WITH THE PORTS OF EACH SET BEING ORIENTED SUBSTANTIALLY ON A PLANE WHICH IS PERPENDICULAR TO THE AXIS OF THE BARREL; B. A FUSE EXTENDING THROUGH SAID BARREL; C. A CLOSURE MEMBER FOR EACH OF SAID PORTS ADAPTED TO ENGAGE THE WALLS OF THE EXPLOSION PORT; AND D. A TUBULAR CASING SUPPORTED BY EACH SAID CLOSURE MEMBER, EACH SAID CASING OF DIAMETER SMALLER THAN THE DIAMETER OF SAID PORTS AND HAVING A CONE SHAPED END OPPOSITE SAID CLOSURE MEMBER WITH LENGTH AS TO EXTEND FROM SAID CLOSURE MEMBER TO A LOCATION ADJACENT TO THE CENTER OF SAID BARREL, WITH SAID CASINGS FORMING A STRUCTURE AUTOMATICALLY TO POSITION SAID FUSE AT THE CENTER OF SAID BARREL, EACH SAID CASING INCLUDING A CONICAL METALLIC LINEAR AND A QUANTITY OF AN EXPLOSIVE HAVING AN INNER SURFACE CONFORMING WITH SAID METALLIC LINER THE APEX OF WHICH IS POINTED AWAY FROM SAID CLOSURE MEMBER.
A perforating gun which comprises: a. a gun barrel provided with a plurality of sets of explosion ports in the wall thereof, with the ports of each set being oriented substantially on a plane which is perpendicular to the axis of the barrel; b. a fuse extending through said barrel; c. a closure member for each of said ports adapted to engage the walls of the explosion port; and d. a tubular casing supported by each said closure member, each said casing of diameter smaller than the diameter of said ports and having a cone shaped end opposite said closure member with length as to extend from said closure member to a location adjacent to the center of said barrel, with said casings forming a structure automatically to position said fuse at the center of said barrel, each said casing including a conical metallic liner and a quantity of an explosive having an inner surface conforming with said metallic liner the apex of which is pointed away from said closure member.
Claim 2
Dependent Claim
171 words
A perforating gun which comprises: a. a gun barrel provided with a plurality of sets of explosion ports in the wall thereof, with the ports of each set being oriented substantially on a plane which is perpendicular to the axis of the barrel; b. a fuse extending through said barrel; c. a closure member for each of said ports adapted to engage the walls of the explosion port; and d. a tubular casing supported by each said closure member, each said casing of diameter smaller than the diameter of said ports and having a cone shaped end opposite said closure member with length as to extend from said closure member to a location adjacent to the center of said barrel, with said casings forming a structure automatically to position said fuse at the center of said barrel, each said casing including a conical metallic liner and a quantity of an explosive having an inner surface conforming with said metallic liner the apex of which is pointed away from said closure member.
Claim 3
Dependent Claim
28 words
The combination set forth in claim 1 in which each said closure member is provided with sealing means to form a fluid-tight seal in one of said ports.
Claim 4
Dependent Claim
20 words
The combination set forth in claim 1 in which said closure member and said casing form a unitary charge assembly.
Claim 5
Dependent Claim
47 words
The combination set forth in claim 1 in which the closed end of said casings are in the form of truncated cones where the angle subtended by each cone is approximately equal to 2 pi /n, where n is the number of ports in a given set.
Claim 6
Dependent Claim
29 words
The combination set forth in claim 4 in which the height of the cone that would be removed by truncation is about equal to the radius of said fuse.