US 11,719,079 B2
Non-mechanical ported perforating torch
Todd Joseph Watkins, Houston, TX (US); Jian Zhang, Jersey Village, TX (US); and Michel Chammas, Houston, TX (US)
Assigned to CHAMMAS PLASMA CUTTERS LLC, Houston, TX (US)
Filed by CHAMMAS PLASMA CUTTERS LLC, Houston, TX (US)
Filed on Oct. 1, 2021, as Appl. No. 17/492,191.
Claims priority of provisional application 63/212,299, filed on Jun. 18, 2021.
Claims priority of provisional application 63/087,080, filed on Oct. 2, 2020.
Prior Publication US 2022/0106861 A1, Apr. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 34/06 (2006.01); E21B 43/1185 (2006.01); E21B 43/119 (2006.01)
CPC E21B 43/1185 (2013.01) [E21B 34/063 (2013.01); E21B 43/119 (2013.01)] 22 Claims
OG exemplary drawing
 
17. A method comprising:
positioning a perforating torch in a casing or tubular desired to be perforated or severed, the perforating torch including:
a thermal igniter assembly, the thermal igniter assembly including a cartridge containment sub, a thermal igniter, and a thermal cartridge, the thermal cartridge including a cartridge housing and a nonexplosive combustible material positioned therein;
a compressed grain magazine, the compressed grain magazine coupled to the thermal igniter, the compressed grain magazine including a magazine housing and a compressed nonexplosive combustible material positioned therein; and
a perforating head assembly coupled to the compressed grain magazine, the perforating head assembly including a port, wherein the port is angled upward toward the top of the perforating torch;
activating the thermal igniter;
igniting the nonexplosive combustible material of the thermal cartridge;
igniting the compressed nonexplosive combustible material of the compressed grain magazine with exhaust gases of the nonexplosive combustible material of the thermal cartridge;
expelling exhaust gases of the compressed nonexplosive combustible material of the compressed grain magazine through the port of the perforating head assembly; and
forming an aperture in the casing or tubular using the exhaust gases expelled through the port.