Patent ID: 7387162

Claim:
An apparatus for perforating a wellbore, comprising: (a) a gun train formed by serially coupling a plurality of guns, (b) a detonator assembly associated with each gun; (c) a signal transmission medium for conveying a firing signal to each detonator assembly from a surface controller, the detonator assembly detonating the associated gun in response to the firing signal; (d) an operator interposed between the signal transmission medium and at least one detonator assembly to enable selective transmission of the firing signal from the surface controller to the at least one detonator assembly, the operator allowing transmission of the firing signal to the at least one detonator assembly only in response to a control signal transmitted from the surface controller; and (e) a wiring harness having a contact plate coupled to the at least one detonator assembly, wherein the operator selectively engages the contact plate.