Loading tube for shaped charges
A loading tube for use in a perforating gun is disclosed which eliminates the necessity for utilization of plastic jackets to restrain shaped charges. The loading tube comprises a first tubular member and an engagement structure in the first tubular member in which the primer ends of the shaped charges may be installed. These engagement structures may be a center plate or inner tubular members. In each of the disclosed embodiments, a detonating cord connects the primer ends of the shaped charges which are installed in the loading tube.
1. A perforating gun, comprising:
a carrier;
a loading tube installed inside of the carrier, comprising:
a tubular member having a first end, a second end and an inner diameter;
a plurality of shaped charges received in openings formed in the tubular member; and
an engagement structure disposed in the tubular member into which primer ends of the plurality of shaped charges are installed, wherein the engagement structure has a length that is substantially equal to the length of the tubular member, a width that is equal to the inner diameter of the tubular member and the entire engagement structure is disposed between the first end and the second end of the tubular member; and
a detonator cord which is connected to the primer ends of the plurality of shaped charges in the loading tube.
2. The perforating gun of claim 1 , wherein the engagement structure comprises a center plate.
3. A perforating gun, comprising:
a tubular carrier;
a loading tube disposed in the tubular carrier;
a center plate disposed in the loading tube, the center plate having a width equal to an inner diameter of the loading tube and a length substantially equal to the lenght of the loading tube;
openings formed in the loading tube on opposite sides of the center plate; and
a shaped charge received in each of the openings, each of the shaped charges having a primer end received by the center plate.
4. The perforating gun of claim 3 , further comprising a detonating cord connected to each of the primer ends of the plurality of shaped charges.
5. The perforating gun of claim 3 , wherein the center plate is welded inside of the loading tube.
6. The perforating gun of claim 3 , further comprising at least one second opening formed through the loading tube, the at least one second opening oriented transverse to the openings receiving the shaped charges.