US 12,264,551 B2
Downhole apparatus and method comprising compacted thermite
Andrew Louden, Aberdeen (GB); and William Edward Lowry, Port Townsend, WA (US)
Assigned to ISOL8 (HOLDINGS) LIMITED, Aberdeen (GB)
Appl. No. 18/035,165
Filed by ISOL8 (HOLDINGS) LIMITED, Aberdeen (GB)
PCT Filed Nov. 4, 2021, PCT No. PCT/EP2021/025428
§ 371(c)(1), (2) Date May 3, 2023,
PCT Pub. No. WO2022/096149, PCT Pub. Date May 12, 2022.
Claims priority of application No. 2017444 (GB), filed on Nov. 4, 2020.
Prior Publication US 2024/0011367 A1, Jan. 11, 2024
Int. Cl. E21B 33/134 (2006.01); E21B 33/12 (2006.01); E21B 36/00 (2006.01)
CPC E21B 33/134 (2013.01) [E21B 33/12 (2013.01); E21B 36/008 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A downhole tool comprising a heater, the heater including a container having a wall enclosing a volume of compacted thermite, the volume of compacted thermite having an external surface, wherein a substantial portion of the external surface of the volume of thermite is in contact with the container wall, and the container wall forms an external surface of the tool, and the tool further comprising a carrier containing a volume of alloy intermixed with a volume of flux, wherein the carrier is sealed to maintain the alloy and flux in a dry condition.