US 12,129,735 B2
Tool for metal plugging or sealing of casing
David D. Hearn, Houston, TX (US); Casey Hirschmann, Houston, TX (US); Randall S. Shafer, Houston, TX (US); Stewart M. Robertson, Houston, TX (US); and Dan Mueller, Houston, TX (US)
Assigned to CONOCOPHILLIPS COMPANY, Houston, TX (US)
Filed by ConocoPhillips Company, Houston, TX (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,826.
Application 17/834,826 is a continuation of application No. 16/999,802, filed on Aug. 21, 2020, granted, now 11,441,384, issued on Sep. 13, 2022.
Application 16/999,802 is a continuation of application No. 15/706,071, filed on Sep. 15, 2017, granted, now 10,760,374, issued on Sep. 1, 2020.
Claims priority of provisional application 62/402,802, filed on Sep. 30, 2016.
Prior Publication US 2022/0307343 A1, Sep. 29, 2022
Prior Publication US 2024/0318524 A9, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 33/13 (2006.01); E21B 29/02 (2006.01); E21B 29/10 (2006.01); E21B 33/12 (2006.01); E21B 36/00 (2006.01); H01L 25/00 (2006.01); H01L 25/065 (2023.01); H10B 41/27 (2023.01); H10B 43/10 (2023.01); H10B 43/27 (2023.01); H10B 43/35 (2023.01); H10B 43/40 (2023.01); H01L 23/00 (2006.01)
CPC E21B 33/13 (2013.01) [E21B 29/02 (2013.01); E21B 29/10 (2013.01); E21B 33/12 (2013.01); E21B 36/008 (2013.01); H01L 25/0657 (2013.01); H01L 25/50 (2013.01); H10B 41/27 (2023.02); H10B 43/10 (2023.02); H10B 43/27 (2023.02); H10B 43/35 (2023.02); H10B 43/40 (2023.02); H01L 24/05 (2013.01); H01L 2224/0401 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for sealing perforations or leaks in a well, comprising:
a) a generally cylindrical sleeve having sides and an open top and a closed bottom;
b) a heater located inside said sleeve, said heater comprising a thermite;
c) an ignition mechanism inside said sleeve and contacting said thermite that upon actuation ignites said thermite;
d) a line detachably connected to said sleeve and connected to said ignition mechanism, such that said sleeve can be detached and left behind to form a sealed casing with said sleeve bonded to a plugging material when said ignition mechanism is retrieved from a subterranean well.