Initiator system providing set confirmation from plug setting tool in downhole well

A system for setting a plug in a wellbore, the system comprising:

• a setting tool connectable to the plug and comprising a housing, a piston positioned at least partially within the housing, and a setting tool energetic element configured, upon activation, to displace the piston axially relative to the housing and shift the plug in the wellbore from a run-in configuration permitting fluid flow within the wellbore around the plug to a set configuration restricting fluid flow in the wellbore around the plug;
• a surface control system configured to transmit an ignition signal;
• an initiator comprising a reusable igniter switch and an igniter assembly in signal communication with the igniter switch, wherein the igniter assembly includes an igniter energetic element configured to activate, in response to receiving the ignition signal from the surface control system, and thereby activate the setting tool energetic element to shift the plug from the run-in configuration to the set configuration;
• and
• an electrical circuit comprising the surface control system, the igniter switch, the igniter assembly, and a disposable signal interrupter that is fluidically isolated from the igniter switch and configured to selectably disconnect the electrical circuit whereby a surface indication is provided of the shifting of the plug to the set configuration.

A method for setting a plug in a wellbore, the method comprising:

• (a) deploying a plugging assembly into a wellbore;
• (b) transmitting an ignition signal from a surface control system along an electrical circuit to the plugging assembly;
• (c) receiving by an initiator of the plugging assembly the ignition signal from the surface control system;
• (d) activating an energetic element of the initiator in response to receiving the ignition signal to shift a plug of the plugging assembly from a run-in configuration permitting fluid flow within the wellbore around the plug to a set configuration restricting fluid flow in the wellbore around the plug;
• (e) automatically disconnecting the electrical circuit by a signal interrupter of the electrical circuit in response to the initiator receiving the ignition signal;
• and
• (f) providing by the surface control system a surface indication of the shifting of the plug to the set configuration in response to the signal interrupter disconnecting the electrical circuit.