Abstract: A tool string includes a perforating gun including a signal conductor, a sub that includes a sub housing including a first bulkhead receptacle extending into the sub housing from a first end, a second bulkhead receptacle extending into the sub housing from a second end, and a switch receptacle positioned between the first bulkhead receptacle and the second bulkhead receptacle, a first bulkhead connector, and a second bulkhead connector, and a switch positionable in the switch receptacle, wherein the switch is configured to establish an electrical connection with the signal conductor of the perforating gun in response to coupling of the sub with the perforating gun, and wherein the switch receptacle is isolated from fluid pressure external of the switch receptacle when the first bulkhead connector is positioned in the first bulkhead receptacle and the second bulkhead connector is positioned in the second bulkhead receptacle.

Abstract: A tool string includes a perforating gun including a signal conductor, a sub that includes a sub housing including a first bulkhead receptacle extending into the sub housing from a first end, a second bulkhead receptacle extending into the sub housing from a second end, and a switch receptacle positioned between the first bulkhead receptacle and the second bulkhead receptacle, a first bulkhead connector, and a second bulkhead connector, and a switch positionable in the switch receptacle, wherein the switch is configured to establish an electrical connection with the signal conductor of the perforating gun in response to coupling of the sub with the perforating gun, and wherein the switch receptacle is isolated from fluid pressure external of the switch receptacle when the first bulkhead connector is positioned in the first bulkhead receptacle and the second bulkhead connector is positioned in the second bulkhead receptacle.

Abstract: A completion system for perforating a tubular string positioned in a wellbore includes a tool string positionable in the wellbore, wherein the tool string includes a first perforating gun and a plurality of digital switches, a control system connectable to the tool string, wherein the control system is configured to generate a plurality of unique identifiers for each switch of the plurality of switches, assign each of the plurality of unique identifiers to one of the plurality of switches, and transmit a signal to a first switch of the plurality of switches including a first unique identifier of the plurality of unique identifiers to actuate the first perforating gun and perforate the tubular string, wherein the first unique identifier is assigned to the first switch.

Abstract: A setting tool for actuating a downhole plug in a wellbore includes a housing including a central passage, a piston slidably disposed in the housing and including a central passage, and wherein the piston includes a first position in the housing and a second position the housing spaced from the first position in a first axial direction, and an atmospheric chamber filled with compressible fluid formed radially between the piston and the housing, and wherein the atmospheric chamber is sealed from an environment surrounding the setting tool when the piston is in the first position, wherein, in response to a pressurization of the central passage of the piston, the setting tool is configured to displace the piston from the first position to the second position and compress the compressible fluid within the atmospheric chamber.

Abstract: A perforating gun assembly includes a perforating gun body, a casing collar locator, and a direct connect sub coupled to the CCL and the perforating gun body. In an embodiment, the direct connect sub includes a single body including a central axis, a first end, and a second end. The first end is engaged with the CCL, and the second end is engaged with the perforating gun body.

Abstract: A thread protector for coupling with an end of a tubular member includes a hub, a connector extending from the hub, and a plurality of splines formed on an outer surface of the connector and configured to releasably couple with a threaded connector of the tubular member, wherein each spline includes an inclined shoulder disposed at an acute angle to a central axis of the thread protector, and a locking shoulder disposed orthogonal to the central axis of the thread protector.

Abstract: A charge tube for use with a perforating tool that includes a tubular member having a first end, a second end, an outer surface, and a passage extending between the first end and the second end, and a receptacle extending through the outer surface of the tubular member for receiving a shaped charge, wherein the tubular member includes a reduced diameter section, and a first expanded diameter section disposed at the first end of the tubular member, the first expanded diameter section having a greater diameter than the reduced diameter section, and wherein the reduced diameter section and the first expanded diameter section of the tubular member are monolithically formed.

Abstract: A charge tube for use with a perforating tool that includes a tubular member having a first end, a second end, an outer surface, and a passage extending between the first end and the second end, and a receptacle extending through the outer surface of the tubular member for receiving a shaped charge, wherein the tubular member includes a reduced diameter section, and a first expanded diameter section disposed at the first end of the tubular member, the first expanded diameter section having a greater diameter than the reduced diameter section, and wherein the reduced diameter section and the first expanded diameter section of the tubular member are monolithically formed.

Abstract: An igniter assembly is disclosed for initiating an explosive charge in a setting tool. In an embodiment, the igniter assembly includes a longitudinal axis, and a holder including a first end, a second end opposite the first end, and a through passage. In addition, the igniter assembly includes an igniter disposed within the through passage. The igniter comprises a single igniter system. Further, the igniter assembly includes a contact seal plug disposed at least partially within the through passage. The contact sealing plug is configured to sealingly engage the through passage to prevent fluid flow out of the through passage beyond the first end of the holder.

Abstract: An igniter assembly is disclosed for initiating an explosive charge in a setting tool. In an embodiment, the igniter assembly includes a longitudinal axis, and a holder including a first end, a second end opposite the first end, and a through passage. In addition, the igniter assembly includes an igniter disposed within the through passage. The igniter comprises a single igniter system. Further, the igniter assembly includes a contact seal plug disposed at least partially within the through passage. The contact sealing plug is configured to sealingly engage the through passage to prevent fluid flow out of the through passage beyond the first end of the holder.

Abstract: A perforating gun assembly includes a perforating gun body, a casing collar locator, and a direct connect sub coupled to the CCL and the perforating gun body. In an embodiment, the direct connect sub includes a single body including a central axis, a first end, and a second end. The first end is engaged with the CCL, and the second end is engaged with the perforating gun body.