Bulkhead for a perforating gun assembly
A bulkhead for transmitting detonation signals. The bulkhead is designed for use with a perforating gun assembly. The bulkhead comprises an elongated tubular body having a first end, a second end opposite the first end, and a bore extending from the first end to the second end. The bulkhead also includes a signal pin residing within the bore of the bulkhead. The signal pin also has a first end, and a second end opposite the first end. An electrically conductive wire is connected to the second end of the signal pin at the second end of the bulkhead. The bulkhead also comprises an end piece extending from the second end of the bulkhead. The end piece closely holds the conductive wire in place. Preferably, the end piece is over-molded to securely hold the detonator wire.
1. A bulkhead for transmitting detonation signals, comprising:
an elongated tubular body having a first end, a second end opposite the first end, and a bore extending from the first end to the second end;
a signal pin residing within the bore of the bulkhead, the signal pin also having a first end, and a second end opposite the first end and configured to transmit electrical signals from the first end to the second end;
an electrically conductive wire connected to the second end of the signal pin within the bulkhead; and
an end piece integral to and extending from the second end of the bulkhead, closely and frictionally holding the conductive wire in place;
wherein the first end of the signal pin resides proximate the first end of the tubular body to receive the electrical signals, while the second end of the signal pin resides proximate the second end piece of the tubular body to deliver the electrical signals.
2. The bulkhead of claim 1 , wherein the second end of the signal pin extends into the end piece of the body.
3. The bulkhead of claim 2 , wherein the first end of the signal pin comprises a banana clip.
4. The bulkhead of claim 3 , wherein the banana clip extends out from the first end of the bulkhead.
5. The bulkhead of claim 2 , wherein
the signal pin comprises a plurality of grooves; and
the tubular body has a bore that comprises a profile for mating with the plurality of grooves for increasing shear strength of the bulkhead.
6. The bulkhead of claim 5 , wherein the signal pin further comprises a frusto-conical portion proximate the first end of the signal pin shaft that fits into a mating conical profile of the bore.
7. The bulkhead of claim 5 , wherein:
the tubular body resides within a tandem sub, and is fabricated from a non-conductive material; and
the electrical contact pin is fabricated substantially from brass.
8. The bulkhead of claim 7 , wherein the plurality of grooves comprises at least three grooves equi-distantly spaced along the signal pin.