US 12,338,717 B2
Downhole ignition assembly
Erick Lowe, Houston, TX (US); Hari Prakash Kalakonda, Pune (IN); Atsushi Nakano, Rosharon, TX (US); and Bertha Wang, Houston, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jul. 1, 2024, as Appl. No. 18/760,740.
Application 18/760,740 is a continuation of application No. 17/995,975, granted, now 12,024,986, previously published as PCT/US2021/027452, filed on Apr. 15, 2021.
Claims priority of provisional application 63/011,046, filed on Apr. 16, 2020.
Prior Publication US 2025/0003317 A1, Jan. 2, 2025
Int. Cl. E21B 43/1185 (2006.01); F42D 1/05 (2006.01)
CPC E21B 43/1185 (2013.01) [F42D 1/05 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A downhole ignition assembly, comprising:
a switch container having a longitudinal axis, the switch container having a first portion that accommodates a switch circuit in an orientation transverse to the longitudinal axis, and a second portion that electrically contacts an igniter disposed in the second portion, the second portion disposed in an ignition housing, the first portion having a contact that makes electrical contact with a tool coupled to the downhole ignition assembly to provide a ground pathway that bypasses the ignition housing.