Downhole perforating gun system and methods of manufacture, assembly and use

Abstract

A downhole perforating gun system provides wireless electrical communication between an inner body conductor, a switch, a detonator, and a feedthrough. Ends on gun carriers of the system couple together end-to-end at end connections. Internal tapered thread is defined in an interior of each carrier's first end, and external tapered thread is defined externally on each carrier's second end. The internal tapered thread of one carrier can thread to the external tapered thread of another carrier. A metal-to-metal contact and/or an annular seal can seal the carriers' interiors from an external environment, and bulkheads can seal between the carrier's interiors at the end connections. Each bulkhead can have a feedthrough conductor to electrically conduct across the end connections. A bulkhead flange can be captured between a distal face and an internal shoulder at the end connection, and a switch can be disposed on the bulkhead.