Perforating gun system and method
A detonator block for housing a detonator includes a body configured to host the detonator, the body having a first end that is configured to be attached to a gun assembly element, and the body having a second end, opposite to the first end, and configured to electrically connect to a gun.
1. A detonator block for housing a detonator, the detonator block comprising:
a body configured to host the detonator;
the body having a first end that is configured to be attached to a gun assembly element;
the body having a second end, opposite to the first end, and configured to electrically connect to a gun;
a printed circuit board located inside the body, the printed circuit board being electrically connected to the detonator; and
plural electrical contacts electrically connected to the printed circuitry board, each electrical contact being a spring loaded contact having a respective pin that extends outside the body, at the second end,
wherein one of the plural electrical contacts is connected to a ground line, and another one of the plural electrical contacts is connected to a through line.
2. The detonator block of claim 1 , further comprising:
a contact switch electrically connected to the printed circuit board and having a head that extends outside the body, at the second end.
3. The detonator block of claim 2 , wherein the contact sensor electrically shunts leads of the detonator when the head is not pressed.
4. The detonator block of claim 3 , wherein the contact sensor un-shunts the leads of the detonator when the head is pressed in.
5. The detonator block of claim 4 , further comprising:
a fuse located on the printed circuit board and configured to burn open by passing a current through the contact switch before the leads of the detonator are unshunted.
6. The detonator block of claim 1 , further comprising:
an interrupter mechanism configured to block a ballistic path between the detonator and the second end of the body.
7. The detonator block of claim 6 , wherein the interrupter mechanism comprises:
a cap;
an arm attached to the cap;
a spring; and
an actuator,
wherein the actuator makes the cap to move away from the detonator.
8. The detonator block of claim 1 , wherein the detonator has two leads that are connected to the printed circuit board.
9. The detonator block of claim 1 , further comprising:
a metallic foil attached to an exterior of the body,
wherein the metallic foil together with a ground plane formed on the printed circuit board forms a Faraday cage to protect the detonator from radio frequency interference.