Patent 10036236 was granted and assigned to GEODynamics (company) on July, 2018 by the United States Patent and Trademark Office.
There is a downhole tool that includes a switch sub having a bore and a bulkhead extending along a longitudinal axis, wherein the bulkhead has a bulkhead bore that fluidly communicates with (i) the bore and (ii) an outside of the switch sub; and an igniter system located inside the bulkhead. The igniter system is configured to ignite an energetic material.